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• SDL2 sprite batching and texture atlases

  - by jms

  I have been programming a 2D game in C++, using the SDL2 graphics API for rendering. My game concept currently features effects that could result in even tens of thousands of sprites being drawn simultaneously to the screen. I'd like to know what can be done for increasing rendering efficiency if the need arises, preferably using the SDL2 API only. I have previously given a quick look at OpenGL-based 2D rendering, and noticed that SDL2 lacks a command like int SDL_RenderCopyMulti(SDL_Renderer* renderer, SDL_Texture* texture, const SDL_Rect* srcrects, SDL_Rect* dstrects, int count) Which would permit SDL to benefit from two common techniques used for efficient 2D graphics: Texture batching: Sorting sprites by the texture used, and then simultaneously rendering as many sprites that use the same texture as possible, changing only the source area on the texture and the destination area on the render target between sprites. This allows the encapsulation of the whole operation in a single GPU command, reducing the overhead drastically from multiple distinct calls. Texture atlases: Instead of creating one texture for each frame of each animation of each sprite, combining multiple animations and even multiple sprites into a single large texture. This lessens the impact of changing the current texture when switching between sprites, as the correct texture is often ready to be used from the previous draw call. Furthemore the GPU is optimized for handling large textures, in contrast to the many tiny textures typically used for sprites. My question: Would SDL2 still get somewhat faster from any rudimentary sprite sorting or from combining multiple images into one texture thanks to automatic video driver optimizations? If I will encounter performance issues related to 2D rendering in the future, will I be forced to switch to OpenGL for lower level control over the GPU? Edit: Are there any plans to include such functionality in the near future?

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• CodePlex Daily Summary for Monday, March 15, 2010

  CodePlex Daily Summary for Monday, March 15, 2010New ProjectsAT Accounts: AT Accounts helps developers to intergrate accounting functionality in their applications. It has both the WPF userinterface and SilverlightChild page list(for dnn4/5): A free module which can display sub pages list for a selected tab. It is template based and support options like Recursive/Child tab prefix/link...dashCommerce: dashCommerce is the leading ASP.NET e-commerce platform.Fire Utilities: My Development Utiltites and base classes: New Zealand Bank Account ValidatorFlyCatch (Bugtracking System): A simple webbased Bugtracking System.fracback: Fractal feedback concepts, based on video feedbackftc3650: code for ftc 3650Google AJAX Search Services for jQuery: This plug-in encapsulates part of the Google AJAX Search API to streamline the process of Google Search integration.Little Black Book DB: This is the Database for the following Projects: SQL Azure PHP Connection SQL Azure Ruby Connection SQL Azure Python Connection SQL Azure .NE...MediaCommMVC: MediaCommMVC is a community platform focusing on photos, videos and discussions. It's based on ASP.NET MVC and uses (fluent) nhibernate, jquery an...Miracle OS: The Miracle OS is an OS from Fox. We work on it, but it isn't ready. Do you want help us? Please send a mail to victor@fox.fi.stMultiwfn: (1)Plotting various graph(filled color/contour/relief map...) (2)Generate Cube file (3)Manipulate & analyze wavefunction Supportting lots of proper...MySpace DataRelay: Data Relay is the foundation of MySpace's middle tier. At its heart, it is a messaging system for relaying information both between clients and ser...NinjaCMS: Ninja CMS is an asp.net based content management system which provides a designer friendly, developer friendly interface to work with. It's flexibl...open gaze and mouse analyzer: Ogama allows recording and analyzing eye- and mouse-tracking data from slideshow eyetracking experiments in parallel. It´s developed in C#.NET and ...Özkasoft.Net | E-Commerce: Özkasoft's E-Commerce ProjectProfiCV: Profi CVpyTarget: Implement a powerful iscsi target in python, and easily use under most popular systems. It also includes the following features: multi-target, mult...SharePoint Platform Extensions: SharePoint Platform Extensions by Espora. Sorting Algorithm Visualization: Sorting Algorithm Visualization Displays Bead Sort, Binary Tree Sort, Bubble Sort, Bucket Sort, Cocktail Sort, Counting Sort, Gnome Sort, In Place ...Specify: A framework for creating executable specifications in .NET. Spell Corrector: A spell corrector that uses Bayes algorithm and BK (Burkhard-Keller) tree.SQL Azure Ruby Connection: This is a demo to show how to connect to SQL Azure with Ruby on Rails.uManage - AD Self-Service Portal: uManage is an Active Directory Self-Service Portal as well as Help Desk web application designed for use on intranet systems. It allows users to u...Winforms Rounded Group Box Control: Rounded Group Box - A Grouping control with Rounded Corners, Gradients, and Drop ShadowWizard Engine: Host application agnostic wizard engine platform, that allows you to fluently define complex conditional flows and provides means for execution of ...WS-Transfer based File Upload: WS-Transer based upload of large files in multiple partsXAMLStylePad: XAMLStylePad - is a simple in use styles and templates XAML-editor. It designed for comfortable coding in XAML with real-time preview result on aut...Your Twitt Engine: Ovo je aplikacija za sve ljude koji su na svom radnom mjestu pod prismotrom poslodavca ili sefa, koji kontroliraju njihov monitor. Tako uz ovu apl...New ReleasesAmiBroker Plug-ins with C#. A non official AmiBroker Plug-in SDK: AniBroker Plug-in SDK v0.0.5: Removed dependency on .NET 4.0, now it works fine with .NET 2.0BeerMath.net: 0.1: Version 0.1Initial set of calculations supported: IBUs Color ABV/ABWChild page list(for dnn4/5): Child Page List 2.6: Source code is also include in module package.dashCommerce: dashCommerce Releases: You can download both Source and WebReady packages at http://www.dashcommerce.org. If you wish to submit patches, then use the Source Code tab her...ExcelDna: ExcelDna Version 0.23: ExcelDna Version 0.23 2010/03/14 - Packing and other features This release adds a number of features to ExcelDna: Add ExplicitExports attribute to ...Family Tree Analyzer: Version 1.0.7.1: Version 1.0.7.0 Update Census form to show family totals Fix England and Wales Lost Cousins reports to be England OR Wales Problems with Gedcom in...Foursquare BlogEngine Widget: foursquare widget for BlogEngine.NET Version 0.2: To see the changes which have been made, visit http://philippkueng.ch/post/Foursquare-BlogEngineNET-Widget-Version-02.aspx For installation instruc...GLB Virtual Player Builder: 0.4.0 Official Archetypes Release: Updated for new archetypes. The builder still includes the old player formats, and you can still import your old players' builds. Please PM me an...Home Access Plus+: v3.1.4.0: Version 3.1.3.1 Release Change Log: Added Breadcrumbs to My Computer File Changes: ~/bin/CHS Extranet.dll ~/bin/CHS Extranet.pdb ~/images/arro...Little Black Book DB: Little Black Book R1: This is the first release of the Little black book presentation I presented at Confoo. I decided to package the Database along with the Windows Az...mite.net - .NET API for mite: Version 1.2.1: Added Support for budget type Modified TimerMapper to return timers Fixed Encoding issue in xml conversionMultiwfn: multiwfn1.0: multiwfn1.0Multiwfn: multiwfn1.0_source: multiwfn1.0_sourceMultiwfn: multiwfn1.1: multiwfn1.1Multiwfn: multiwfn1.1_source: multiwfn1.1_sourceMultiwfn: multiwfn1.2: 1.2 2010-FEB-9 *加入了对10f型轨道的支持。 *新支持非限制性Post-HF波函数用以计算自旋密度。 *新增加直接读入高斯03/09的fch文件的支持，可以观看NBO轨道，详见readme实例4.10。 *绘制平面图时允许通过输入三个点坐标定义平面，允许自定义平面的原点与平移向...Multiwfn: multiwfn1.2_source: Include all the file that needed by compilation in CVF6.5PowerShell Community Extensions: 2.0 Beta 2: Release NotesThis is a pretty close to final release. We have eliminated all of the names that ran afound of the module loading mechanism which me...pyTarget: pyTarget.binary-for-windows-x86.rar: pyTarget.binary-for-windows-x86.rarpyTarget: pyTarget.src.tar.bz2: pyTarget.src.tar.bz2RedBulb for XNA Framework: RedBulbConsole (Console, Menu and TrackHUD Sample): http://bayimg.com/image/jalhmaacd.jpgScrum Sprint Monitor: 1.0.0.45262 (.NET 4.0 RC): Tested against TFS 2010 RC. For the .NET 3.5 SP1 platform, use the .NET 3.5 SP1 download. What is new in this release? Major performance increase ...sELedit: sELedit v1.1: Removed: Clone and Delete Button Added: Context Menu to Item List Added: Clone and Delete button to Context Menu Added: Export / Import Item ...Sorting Algorithm Visualization: Beta 1: Sorting Algorithm VisualizationSpecify: Version 1.0: Version 1.0Spell Corrector: Spell Corrector 0.1: A basic version that supports basic functionality.Spell Corrector: Spell Corrector 0.1 Source Code: Source code of version 0.1Spiral Architecture Driven Development (SADD): SADD v.0.9: Pre-final release with the NEW materials now all in English ! The Final release is coming soon. After guest column for SADD publication in MS Ar...Spiral Architecture Driven Development (SADD) for Russian: SADD v.0.9: Pre-final release with the NEW materials now all in English ! The Final release is coming soon. After guest column for SADD publication in MS Ar...SQL Azure Ruby Connection: Little Black Book Ruby R1: This is the Ruby Demo that I demostrated at Confoo. Special Thanks to Tony Thompson for putting this demo together. To check out Tony's Portfolio ...The Scrum Factory: The Scrum Factory Server - V1a: This is the newest version of the server. Some minor bugs from version v1 were fixed, and some slighted changed were made some database views.twNowplaying: twNowplaying 1.0.0.4: Please note that the user has to press the Twitter logo to log in the first time the application is started.uManage - AD Self-Service Portal: uManage - v1.0 (.NET 4.0 RC): Initial Release of uManage. NOTE: Designed for ASP.NET and .NET 4.0 RC ONLY! This is the initial release of uManage and covers the first phase of ...Virtu: Virtu 0.8: Source Requirements.NET Framework 3.5 with Service Pack 1 Visual Studio 2008 with Service Pack 1, or Visual C# 2008 Express Edition with Service Pa...Visual Studio DSite: Speech Synthesizer (Text to Speech) in Visual C++: A very simple text to speech program written in visual c 2008.White Tiger: 0.0.4.0: *now you can disable the file security checks *winforms aplications created to manage tablesWinforms Rounded Group Box Control: Release 1.0: To use this control simply add the class to your project and compile it. It will then show up in the projects components section in the toolbox. ...WS-Transfer based File Upload: 0.5: Implements the binary file transfer mechanism onlyXsltDb - DotNetNuke XSLT module: 01.00.89: Super modules configuration names. 16767 - Fixed more bug fixes...Yakiimo3D: DirectX11 Rheinhard Tonemapping Source and Binary: DirectX11 Rheinhard tonemapping source and binary.Your Twitt Engine: test: Slobodno probajte sa vasim twitter korisničkim računomMost Popular ProjectsMetaSharpWBFS ManagerRawrAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitASP.NET Ajax LibraryWindows Presentation Foundation (WPF)ASP.NETLiveUpload to FacebookMost Active ProjectsLINQ to TwitterRawrN2 CMSBlogEngine.NETpatterns & practices – Enterprise LibrarySharePoint Team-MailerjQuery Library for SharePoint Web ServicesCaliburn: An Application Framework for WPF and SilverlightFarseer Physics EngineCalcium: A modular application toolset leveraging Prism

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• Column order can matter

  - by Dave Ballantyne

  Ordinarily, column order of a SQL statement does not matter. Select a,b,c from table will produce the same execution plan as   Select c,b,a from table However, sometimes it can make a difference.   Consider this statement (maxdop is used to make a simpler plan and has no impact to the main point):   select SalesOrderID, CustomerID, OrderDate, ROW_NUMBER() over (Partition By CustomerId order by OrderDate asc) as RownAsc, ROW_NUMBER() over (Partition By CustomerId order by OrderDate Desc) as RownDesc from sales.SalesOrderHeader order by CustomerID,OrderDateoption(maxdop 1) If you look at the execution plan, you will see similar to this That is three sorts.  One for RownAsc,  one for RownDesc and the final one for the ‘Order by’ clause.  Sorting is an expensive operation and one that should be avoided if possible.  So with this in mind, it may come as some surprise that the optimizer does not re-order operations to group them together when the incoming data is in a similar (if not exactly the same) sorted sequence.  A simple change to swap the RownAsc and RownDesc columns to produce this statement : select SalesOrderID, CustomerID, OrderDate, ROW_NUMBER() over (Partition By CustomerId order by OrderDate Desc) as RownDesc , ROW_NUMBER() over (Partition By CustomerId order by OrderDate asc) as RownAsc from Sales.SalesOrderHeader order by CustomerID,OrderDateoption(maxdop 1) Will result a different and more efficient query plan with one less sort. The optimizer, although unable to automatically re-order operations, HAS taken advantage of the data ordering if it is as required.  This is well worth taking advantage of if you have different sorting requirements in one statement. Try grouping the functions that require the same order together and save yourself a few extra sorts.

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• Use MvcContrib Grid to Display a Grid of Data in ASP.NET MVC

  The past six articles in this series have looked at how to display a grid of data in an ASP.NET MVC application and how to implement features like sorting, paging, and filtering. In each of these past six tutorials we were responsible for generating the rendered markup for the grid. Our Views included the <table> tags, the <th> elements for the header row, and a foreach loop that emitted a series of <td> elements for each row to display in the grid. While this approach certainly works, it does lead to a bit of repetition and inflates the size of our Views. The ASP.NET MVC framework includes an HtmlHelper class that adds support for rendering HTML elements in a View. An instance of this class is available through the Html object, and is often used in a View to create action links (Html.ActionLink), textboxes (Html.TextBoxFor), and other HTML content. Such content could certainly be created by writing the markup by hand in the View; however, the HtmlHelper makes things easier by offering methods that emit common markup patterns. You can even create your own custom HTML Helpers by adding extension methods to the HtmlHelper class. MvcContrib is a popular, open source project that adds various functionality to the ASP.NET MVC framework. This includes a very versatile Grid HTML Helper that provides a strongly-typed way to construct a grid in your Views. Using MvcContrib's Grid HTML Helper you can ditch the <table>, <tr>, and <td> markup, and instead use syntax like Html.Grid(...). This article looks at using the MvcContrib Grid to display a grid of data in an ASP.NET MVC application. A future installment will show how to configure the MvcContrib Grid to support both sorting and paging. Read on to learn more! Read More >

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• Material System

  - by Towelie

  I'm designing Material/Shader System (target API DX10+ and may be OpenGL3+, now only DX10). I know, there was a lot of topics about this, but i can't find what i need. I don't want to do some kind of compilation/parsing scripts in real-time. So there some artist-created material, written at some analog of CG. After it compiled to hlsl code and after to final shader. Also there are some hard-coded ConstantBuffers, like cbuffer EveryFrameChanging { float4x4 matView; float time; float delta; } And shader use shared constant buffers to get parameters. For each mesh in the scene, getting needs and what it can give (normals, binormals etc.) and finding corresponding permutation of shader or calculating missing parts. Also, during build calculating render states and the permutations or hash for this shader which later will be used for sorting or even giving the ID from 0 to ShaderCount w/o gaps to it for sorting. FinalShader have only 1 technique and one pass. After it for each Mesh setting some shader and it's good to render. some pseudo code SetConstantBuffer(ConstantBuffer::PerFrame); foreach (shader in FinalShaders) SetConstantBuffer(ConstantBuffer::PerShader, shader); SetRenderState(shader); foreach (mesh in shader.GetAllMeshes) SetConstantBuffer(ConstantBuffer::PerMesh, mesh); SetBuffers(mesh); Draw(); class FinalShader { public: UUID m_ID; RenderState m_RenderState; CBufferBindings m_BufferBindings; } But i have no idea how to create this CG language and do i really need it?

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• An Introduction to jQuery Templates

  - by Stephen Walther

  The goal of this blog entry is to provide you with enough information to start working with jQuery Templates. jQuery Templates enable you to display and manipulate data in the browser. For example, you can use jQuery Templates to format and display a set of database records that you have retrieved with an Ajax call. jQuery Templates supports a number of powerful features such as template tags, template composition, and wrapped templates. I’ll concentrate on the features that I think that you will find most useful. In order to focus on the jQuery Templates feature itself, this blog entry is server technology agnostic. All the samples use HTML pages instead of ASP.NET pages. In a future blog entry, I’ll focus on using jQuery Templates with ASP.NET Web Forms and ASP.NET MVC (You can do some pretty powerful things when jQuery Templates are used on the client and ASP.NET is used on the server). Introduction to jQuery Templates The jQuery Templates plugin was developed by the Microsoft ASP.NET team in collaboration with the open-source jQuery team. While working at Microsoft, I wrote the original proposal for jQuery Templates, Dave Reed wrote the original code, and Boris Moore wrote the final code. The jQuery team – especially John Resig – was very involved in each step of the process. Both the jQuery community and ASP.NET communities were very active in providing feedback. jQuery Templates will be included in the jQuery core library (the jQuery.js library) when jQuery 1.5 is released. Until jQuery 1.5 is released, you can download the jQuery Templates plugin from the jQuery Source Code Repository or you can use jQuery Templates directly from the ASP.NET CDN. The documentation for jQuery Templates is already included with the official jQuery documentation at http://api.jQuery.com. The main entry for jQuery templates is located under the topic plugins/templates. A Basic Sample of jQuery Templates Let’s start with a really simple sample of using jQuery Templates. We’ll use the plugin to display a list of books stored in a JavaScript array. Here’s the complete code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html > <head> <title>Intro</title> <link href="0_Site.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="pageContent"> <h1>ASP.NET Bookstore</h1> <div id="bookContainer"></div> </div> <script id="bookTemplate" type="text/x-jQuery-tmpl"> <div> <img src="BookPictures/${picture}" alt="" /> <h2>${title}</h2> price: ${formatPrice(price)} </div> </script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.4.4.js"></script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.js"></script> <script type="text/javascript"> // Create an array of books var books = [ { title: "ASP.NET 4 Unleashed", price: 37.79, picture: "AspNet4Unleashed.jpg" }, { title: "ASP.NET MVC Unleashed", price: 44.99, picture: "AspNetMvcUnleashed.jpg" }, { title: "ASP.NET Kick Start", price: 4.00, picture: "AspNetKickStart.jpg" }, { title: "ASP.NET MVC Unleashed iPhone", price: 44.99, picture: "AspNetMvcUnleashedIPhone.jpg" }, ]; // Render the books using the template $("#bookTemplate").tmpl(books).appendTo("#bookContainer"); function formatPrice(price) { return "$" + price.toFixed(2); } </script> </body> </html> When you open this page in a browser, a list of books is displayed: There are several things going on in this page which require explanation. First, notice that the page uses both the jQuery 1.4.4 and jQuery Templates libraries. Both libraries are retrieved from the ASP.NET CDN: <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.4.4.js"></script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.js"></script> You can use the ASP.NET CDN for free (even for production websites). You can learn more about the files included on the ASP.NET CDN by visiting the ASP.NET CDN documentation page. Second, you should notice that the actual template is included in a script tag with a special MIME type: <script id="bookTemplate" type="text/x-jQuery-tmpl"> <div> <img src="BookPictures/${picture}" alt="" /> <h2>${title}</h2> price: ${formatPrice(price)} </div> </script> This template is displayed for each of the books rendered by the template. The template displays a book picture, title, and price. Notice that the SCRIPT tag which wraps the template has a MIME type of text/x-jQuery-tmpl. Why is the template wrapped in a SCRIPT tag and why the strange MIME type? When a browser encounters a SCRIPT tag with an unknown MIME type, it ignores the content of the tag. This is the behavior that you want with a template. You don’t want a browser to attempt to parse the contents of a template because this might cause side effects. For example, the template above includes an <img> tag with a src attribute that points at “BookPictures/${picture}”. You don’t want the browser to attempt to load an image at the URL “BookPictures/${picture}”. Instead, you want to prevent the browser from processing the IMG tag until the ${picture} expression is replaced by with the actual name of an image by the jQuery Templates plugin. If you are not worried about browser side-effects then you can wrap a template inside any HTML tag that you please. For example, the following DIV tag would also work with the jQuery Templates plugin: <div id="bookTemplate" style="display:none"> <div> <h2>${title}</h2> price: ${formatPrice(price)} </div> </div> Notice that the DIV tag includes a style=”display:none” attribute to prevent the template from being displayed until the template is parsed by the jQuery Templates plugin. Third, notice that the expression ${…} is used to display the value of a JavaScript expression within a template. For example, the expression ${title} is used to display the value of the book title property. You can use any JavaScript function that you please within the ${…} expression. For example, in the template above, the book price is formatted with the help of the custom JavaScript formatPrice() function which is defined lower in the page. Fourth, and finally, the template is rendered with the help of the tmpl() method. The following statement selects the bookTemplate and renders an array of books using the bookTemplate. The results are appended to a DIV element named bookContainer by using the standard jQuery appendTo() method. $("#bookTemplate").tmpl(books).appendTo("#bookContainer"); Using Template Tags Within a template, you can use any of the following template tags. {{tmpl}} – Used for template composition. See the section below. {{wrap}} – Used for wrapped templates. See the section below. {{each}} – Used to iterate through a collection. {{if}} – Used to conditionally display template content. {{else}} – Used with {{if}} to conditionally display template content. {{html}} – Used to display the value of an HTML expression without encoding the value. Using ${…} or {{= }} performs HTML encoding automatically. {{= }}-- Used in exactly the same way as ${…}. {{! }} – Used for displaying comments. The contents of a {{!...}} tag are ignored. For example, imagine that you want to display a list of blog entries. Each blog entry could, possibly, have an associated list of categories. The following page illustrates how you can use the { if}} and {{each}} template tags to conditionally display categories for each blog entry:   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>each</title> <link href="1_Site.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="blogPostContainer"></div> <script id="blogPostTemplate" type="text/x-jQuery-tmpl"> <h1>${postTitle}</h1> <p> ${postEntry} </p> {{if categories}} Categories: {{each categories}} <i>${$value}</i> {{/each}} {{else}} Uncategorized {{/if}} </script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.4.4.js"></script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.js"></script> <script type="text/javascript"> var blogPosts = [ { postTitle: "How to fix a sink plunger in 5 minutes", postEntry: "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna.", categories: ["HowTo", "Sinks", "Plumbing"] }, { postTitle: "How to remove a broken lightbulb", postEntry: "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna.", categories: ["HowTo", "Lightbulbs", "Electricity"] }, { postTitle: "New associate website", postEntry: "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna." } ]; // Render the blog posts $("#blogPostTemplate").tmpl(blogPosts).appendTo("#blogPostContainer"); </script> </body> </html> When this page is opened in a web browser, the following list of blog posts and categories is displayed: Notice that the first and second blog entries have associated categories but the third blog entry does not. The third blog entry is “Uncategorized”. The template used to render the blog entries and categories looks like this: <script id="blogPostTemplate" type="text/x-jQuery-tmpl"> <h1>${postTitle}</h1> <p> ${postEntry} </p> {{if categories}} Categories: {{each categories}} <i>${$value}</i> {{/each}} {{else}} Uncategorized {{/if}} </script> Notice the special expression $value used within the {{each}} template tag. You can use $value to display the value of the current template item. In this case, $value is used to display the value of each category in the collection of categories. Template Composition When building a fancy page, you might want to build a template out of multiple templates. In other words, you might want to take advantage of template composition. For example, imagine that you want to display a list of products. Some of the products are being sold at their normal price and some of the products are on sale. In that case, you might want to use two different templates for displaying a product: a productTemplate and a productOnSaleTemplate. The following page illustrates how you can use the {{tmpl}} tag to build a template from multiple templates:   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Composition</title> <link href="2_Site.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="pageContainer"> <h1>Products</h1> <div id="productListContainer"></div> <!-- Show list of products using composition --> <script id="productListTemplate" type="text/x-jQuery-tmpl"> <div> {{if onSale}} {{tmpl "#productOnSaleTemplate"}} {{else}} {{tmpl "#productTemplate"}} {{/if}} </div> </script> <!-- Show product --> <script id="productTemplate" type="text/x-jQuery-tmpl"> ${name} </script> <!-- Show product on sale --> <script id="productOnSaleTemplate" type="text/x-jQuery-tmpl"> <b>${name}</b> <img src="images/on_sale.png" alt="On Sale" /> </script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.4.4.js"></script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.js"></script> <script type="text/javascript"> var products = [ { name: "Laptop", onSale: false }, { name: "Apples", onSale: true }, { name: "Comb", onSale: false } ]; $("#productListTemplate").tmpl(products).appendTo("#productListContainer"); </script> </div> </body> </html>   In the page above, the main template used to display the list of products looks like this: <script id="productListTemplate" type="text/x-jQuery-tmpl"> <div> {{if onSale}} {{tmpl "#productOnSaleTemplate"}} {{else}} {{tmpl "#productTemplate"}} {{/if}} </div> </script>   If a product is on sale then the product is displayed with the productOnSaleTemplate (which includes an on sale image): <script id="productOnSaleTemplate" type="text/x-jQuery-tmpl"> <b>${name}</b> <img src="images/on_sale.png" alt="On Sale" /> </script>   Otherwise, the product is displayed with the normal productTemplate (which does not include the on sale image): <script id="productTemplate" type="text/x-jQuery-tmpl"> ${name} </script>   You can pass a parameter to the {{tmpl}} tag. The parameter becomes the data passed to the template rendered by the {{tmpl}} tag. For example, in the previous section, we used the {{each}} template tag to display a list of categories for each blog entry like this: <script id="blogPostTemplate" type="text/x-jQuery-tmpl"> <h1>${postTitle}</h1> <p> ${postEntry} </p> {{if categories}} Categories: {{each categories}} <i>${$value}</i> {{/each}} {{else}} Uncategorized {{/if}} </script>   Another way to create this template is to use template composition like this: <script id="blogPostTemplate" type="text/x-jQuery-tmpl"> <h1>${postTitle}</h1> <p> ${postEntry} </p> {{if categories}} Categories: {{tmpl(categories) "#categoryTemplate"}} {{else}} Uncategorized {{/if}} </script> <script id="categoryTemplate" type="text/x-jQuery-tmpl"> <i>${$data}</i> &nbsp; </script>   Using the {{each}} tag or {{tmpl}} tag is largely a matter of personal preference. Wrapped Templates The {{wrap}} template tag enables you to take a chunk of HTML and transform the HTML into another chunk of HTML (think easy XSLT). When you use the {{wrap}} tag, you work with two templates. The first template contains the HTML being transformed and the second template includes the filter expressions for transforming the HTML. For example, you can use the {{wrap}} template tag to transform a chunk of HTML into an interactive tab strip: When you click any of the tabs, you see the corresponding content. This tab strip was created with the following page: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Wrapped Templates</title> <style type="text/css"> body { font-family: Arial; background-color:black; } .tabs div { display:inline-block; border-bottom: 1px solid black; padding:4px; background-color:gray; cursor:pointer; } .tabs div.tabState_true { background-color:white; border-bottom:1px solid white; } .tabBody { border-top:1px solid white; padding:10px; background-color:white; min-height:400px; width:400px; } </style> </head> <body> <div id="tabsView"></div> <script id="tabsContent" type="text/x-jquery-tmpl"> {{wrap "#tabsWrap"}} <h3>Tab 1</h3> <div> Content of tab 1. Lorem ipsum dolor <b>sit</b> amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna. </div> <h3>Tab 2</h3> <div> Content of tab 2. Lorem ipsum dolor <b>sit</b> amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna. </div> <h3>Tab 3</h3> <div> Content of tab 3. Lorem ipsum dolor <b>sit</b> amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna. </div> {{/wrap}} </script> <script id="tabsWrap" type="text/x-jquery-tmpl"> <div class="tabs"> {{each $item.html("h3", true)}} <div class="tabState_${$index === selectedTabIndex}"> ${$value} </div> {{/each}} </div> <div class="tabBody"> {{html $item.html("div")[selectedTabIndex]}} </div> </script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.4.4.js"></script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.js"></script> <script type="text/javascript"> // Global for tracking selected tab var selectedTabIndex = 0; // Render the tab strip $("#tabsContent").tmpl().appendTo("#tabsView"); // When a tab is clicked, update the tab strip $("#tabsView") .delegate(".tabState_false", "click", function () { var templateItem = $.tmplItem(this); selectedTabIndex = $(this).index(); templateItem.update(); }); </script> </body> </html>   The “source” for the tab strip is contained in the following template: <script id="tabsContent" type="text/x-jquery-tmpl"> {{wrap "#tabsWrap"}} <h3>Tab 1</h3> <div> Content of tab 1. Lorem ipsum dolor <b>sit</b> amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna. </div> <h3>Tab 2</h3> <div> Content of tab 2. Lorem ipsum dolor <b>sit</b> amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna. </div> <h3>Tab 3</h3> <div> Content of tab 3. Lorem ipsum dolor <b>sit</b> amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna. </div> {{/wrap}} </script>   The tab strip is created with a list of H3 elements (which represent each tab) and DIV elements (which represent the body of each tab). Notice that the HTML content is wrapped in the {{wrap}} template tag. This template tag points at the following tabsWrap template: <script id="tabsWrap" type="text/x-jquery-tmpl"> <div class="tabs"> {{each $item.html("h3", true)}} <div class="tabState_${$index === selectedTabIndex}"> ${$value} </div> {{/each}} </div> <div class="tabBody"> {{html $item.html("div")[selectedTabIndex]}} </div> </script> The tabs DIV contains all of the tabs. The {{each}} template tag is used to loop through each of the H3 elements from the source template and render a DIV tag that represents a particular tab. The template item html() method is used to filter content from the “source” HTML template. The html() method accepts a jQuery selector for its first parameter. The tabs are retrieved from the source template by using an h3 filter. The second parameter passed to the html() method – the textOnly parameter -- causes the filter to return the inner text of each h3 element. You can learn more about the html() method at the jQuery website (see the section on $item.html()). The tabBody DIV renders the body of the selected tab. Notice that the {{html}} template tag is used to display the tab body so that HTML content in the body won’t be HTML encoded. The html() method is used, once again, to grab all of the DIV elements from the source HTML template. The selectedTabIndex global variable is used to display the contents of the selected tab. Remote Templates A common feature request for jQuery templates is support for remote templates. Developers want to be able to separate templates into different files. Adding support for remote templates requires only a few lines of extra code (Dave Ward has a nice blog entry on this). For example, the following page uses a remote template from a file named BookTemplate.htm: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Remote Templates</title> <link href="0_Site.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="pageContent"> <h1>ASP.NET Bookstore</h1> <div id="bookContainer"></div> </div> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.4.4.js"></script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.js"></script> <script type="text/javascript"> // Create an array of books var books = [ { title: "ASP.NET 4 Unleashed", price: 37.79, picture: "AspNet4Unleashed.jpg" }, { title: "ASP.NET MVC Unleashed", price: 44.99, picture: "AspNetMvcUnleashed.jpg" }, { title: "ASP.NET Kick Start", price: 4.00, picture: "AspNetKickStart.jpg" }, { title: "ASP.NET MVC Unleashed iPhone", price: 44.99, picture: "AspNetMvcUnleashedIPhone.jpg" }, ]; // Get the remote template $.get("BookTemplate.htm", null, function (bookTemplate) { // Render the books using the remote template $.tmpl(bookTemplate, books).appendTo("#bookContainer"); }); function formatPrice(price) { return "$" + price.toFixed(2); } </script> </body> </html>   The remote template is retrieved (and rendered) with the following code: // Get the remote template $.get("BookTemplate.htm", null, function (bookTemplate) { // Render the books using the remote template $.tmpl(bookTemplate, books).appendTo("#bookContainer"); });   This code uses the standard jQuery $.get() method to get the BookTemplate.htm file from the server with an Ajax request. After the BookTemplate.htm file is successfully retrieved, the $.tmpl() method is used to render an array of books with the template. Here’s what the BookTemplate.htm file looks like: <div> <img src="BookPictures/${picture}" alt="" /> <h2>${title}</h2> price: ${formatPrice(price)} </div> Notice that the template in the BooksTemplate.htm file is not wrapped by a SCRIPT element. There is no need to wrap the template in this case because there is no possibility that the template will get interpreted before you want it to be interpreted. If you plan to use the bookTemplate multiple times – for example, you are paging or sorting the books -- then you should compile the template into a function and cache the compiled template function. For example, the following page can be used to page through a list of 100 products (using iPhone style More paging). <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Template Caching</title> <link href="6_Site.css" rel="stylesheet" type="text/css" /> </head> <body> <h1>Products</h1> <div id="productContainer"></div> <button id="more">More</button> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.4.4.js"></script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.js"></script> <script type="text/javascript"> // Globals var pageIndex = 0; // Create an array of products var products = []; for (var i = 0; i < 100; i++) { products.push({ name: "Product " + (i + 1) }); } // Get the remote template $.get("ProductTemplate.htm", null, function (productTemplate) { // Compile and cache the template $.template("productTemplate", productTemplate); // Render the products renderProducts(0); }); $("#more").click(function () { pageIndex++; renderProducts(); }); function renderProducts() { // Get page of products var pageOfProducts = products.slice(pageIndex * 5, pageIndex * 5 + 5); // Used cached productTemplate to render products $.tmpl("productTemplate", pageOfProducts).appendTo("#productContainer"); } function formatPrice(price) { return "$" + price.toFixed(2); } </script> </body> </html>   The ProductTemplate is retrieved from an external file named ProductTemplate.htm. This template is retrieved only once. Furthermore, it is compiled and cached with the help of the $.template() method: // Get the remote template $.get("ProductTemplate.htm", null, function (productTemplate) { // Compile and cache the template $.template("productTemplate", productTemplate); // Render the products renderProducts(0); });   The $.template() method compiles the HTML representation of the template into a JavaScript function and caches the template function with the name productTemplate. The cached template can be used by calling the $.tmp() method. The productTemplate is used in the renderProducts() method: function renderProducts() { // Get page of products var pageOfProducts = products.slice(pageIndex * 5, pageIndex * 5 + 5); // Used cached productTemplate to render products $.tmpl("productTemplate", pageOfProducts).appendTo("#productContainer"); } In the code above, the first parameter passed to the $.tmpl() method is the name of a cached template. Working with Template Items In this final section, I want to devote some space to discussing Template Items. A new Template Item is created for each rendered instance of a template. For example, if you are displaying a list of 100 products with a template, then 100 Template Items are created. A Template Item has the following properties and methods: data – The data associated with the Template Instance. For example, a product. tmpl – The template associated with the Template Instance. parent – The parent template item if the template is nested. nodes – The HTML content of the template. calls – Used by {{wrap}} template tag. nest – Used by {{tmpl}} template tag. wrap – Used to imperatively enable wrapped templates. html – Used to filter content from a wrapped template. See the above section on wrapped templates. update – Used to re-render a template item. The last method – the update() method -- is especially interesting because it enables you to re-render a template item with new data or even a new template. For example, the following page displays a list of books. When you hover your mouse over any of the books, additional book details are displayed. In the following screenshot, details for ASP.NET Kick Start are displayed. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Template Item</title> <link href="0_Site.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="pageContent"> <h1>ASP.NET Bookstore</h1> <div id="bookContainer"></div> </div> <script id="bookTemplate" type="text/x-jQuery-tmpl"> <div class="bookItem"> <img src="BookPictures/${picture}" alt="" /> <h2>${title}</h2> price: ${formatPrice(price)} </div> </script> <script id="bookDetailsTemplate" type="text/x-jQuery-tmpl"> <div class="bookItem"> <img src="BookPictures/${picture}" alt="" /> <h2>${title}</h2> price: ${formatPrice(price)} <p> ${description} </p> </div> </script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.4.4.js"></script> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.js"></script> <script type="text/javascript"> // Create an array of books var books = [ { title: "ASP.NET 4 Unleashed", price: 37.79, picture: "AspNet4Unleashed.jpg", description: "The most comprehensive book on Microsoft’s new ASP.NET 4.. " }, { title: "ASP.NET MVC Unleashed", price: 44.99, picture: "AspNetMvcUnleashed.jpg", description: "Writing for professional programmers, Walther explains the crucial concepts that make the Model-View-Controller (MVC) development paradigm work…" }, { title: "ASP.NET Kick Start", price: 4.00, picture: "AspNetKickStart.jpg", description: "Visual Studio .NET is the premier development environment for creating .NET applications…." }, { title: "ASP.NET MVC Unleashed iPhone", price: 44.99, picture: "AspNetMvcUnleashedIPhone.jpg", description: "ASP.NET MVC Unleashed for the iPhone…" }, ]; // Render the books using the template $("#bookTemplate").tmpl(books).appendTo("#bookContainer"); // Get compiled details template var bookDetailsTemplate = $("#bookDetailsTemplate").template(); // Add hover handler $(".bookItem").mouseenter(function () { // Get template item associated with DIV var templateItem = $(this).tmplItem(); // Change template to compiled template templateItem.tmpl = bookDetailsTemplate; // Re-render template templateItem.update(); }); function formatPrice(price) { return "$" + price.toFixed(2); } </script> </body> </html>   There are two templates used to display a book: bookTemplate and bookDetailsTemplate. When you hover your mouse over a template item, the standard bookTemplate is swapped out for the bookDetailsTemplate. The bookDetailsTemplate displays a book description. The books are rendered with the bookTemplate with the following line of code: // Render the books using the template $("#bookTemplate").tmpl(books).appendTo("#bookContainer");   The following code is used to swap the bookTemplate and the bookDetailsTemplate to show details for a book: // Get compiled details template var bookDetailsTemplate = $("#bookDetailsTemplate").template(); // Add hover handler $(".bookItem").mouseenter(function () { // Get template item associated with DIV var templateItem = $(this).tmplItem(); // Change template to compiled template templateItem.tmpl = bookDetailsTemplate; // Re-render template templateItem.update(); });   When you hover your mouse over a DIV element rendered by the bookTemplate, the mouseenter handler executes. First, this handler retrieves the Template Item associated with the DIV element by calling the tmplItem() method. The tmplItem() method returns a Template Item. Next, a new template is assigned to the Template Item. Notice that a compiled version of the bookDetailsTemplate is assigned to the Template Item’s tmpl property. The template is compiled earlier in the code by calling the template() method. Finally, the Template Item update() method is called to re-render the Template Item with the bookDetailsTemplate instead of the original bookTemplate. Summary This is a long blog entry and I still have not managed to cover all of the features of jQuery Templates J However, I’ve tried to cover the most important features of jQuery Templates such as template composition, template wrapping, and template items. To learn more about jQuery Templates, I recommend that you look at the documentation for jQuery Templates at the official jQuery website. Another great way to learn more about jQuery Templates is to look at the (unminified) source code.

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• Computer Networks UNISA - Chap 12 &ndash; Networking Security

  - by MarkPearl

  After reading this section you should be able to Identify security risks in LANs and WANs and design security policies that minimize risks Explain how physical security contributes to network security Discuss hardware and design based security techniques Understand methods of encryption such as SSL and IPSec, that can secure data in storage and in transit Describe how popular authentication protocols such as RADIUS< TACACS,Kerberos, PAP, CHAP, and MS-CHAP function Use network operating system techniques to provide basic security Understand wireless security protocols such as WEP, WPA and 802.11i Security Audits Before spending time and money on network security, examine your networks security risks – rate and prioritize risks. Different organizations have different levels of network security requirements. Security Risks Not all security breaches result from a manipulation of network technology – there are human factors that can play a role as well. The following categories are areas of considerations… Risks associated with People Risks associated with Transmission and Hardware Risks associated with Protocols and Software Risks associated with Internet Access An effective security policy A security policy identifies your security goals, risks, levels of authority, designated security coordinator and team members, responsibilities for each team member, and responsibilities for each employee. In addition it specifies how to address security breaches. It should not state exactly which hardware, software, architecture, or protocols will be used to ensure security, nor how hardware or software will be installed and configured. A security policy must address an organizations specific risks. to understand your risks, you should conduct a security audit that identifies vulnerabilities and rates both the severity of each threat and its likelihood of occurring. Security Policy Content Security policy content should… Policies for each category of security Explain to users what they can and cannot do and how these measures protect the networks security Should define what confidential means to the organization Response Policy A security policy should provide for a planned response in the event of a security breach. The response policy should identify the members of a response team, all of whom should clearly understand the the security policy, risks, and measures in place. Some of the roles concerned could include… Dispatcher – the person on call who first notices the breach Manager – the person who coordinates the resources necessary to solve the problem Technical Support Specialist – the person who focuses on solving the problem Public relations specialist – the person who acts as the official spokesperson for the organization Physical Security An important element in network security is restricting physical access to its components. There are various techniques for this including locking doors, security people at access points etc. You should identify the following… Which rooms contain critical systems or data and must be secured Through what means might intruders gain access to these rooms How and to what extent are authorized personnel granted access to these rooms Are authentication methods such as ID cards easy to forge etc. Security in Network Design The optimal way to prevent external security breaches from affecting you LAN is not to connect your LAN to the outside world at all. The next best protection is to restrict access at every point where your LAN connects to the rest of the world. Router Access List – can be used to filter or decline access to a portion of a network for certain devices. Intrusion Detection and Prevention While denying someone access to a section of the network is good, it is better to be able to detect when an attempt has been made and notify security personnel. This can be done using IDS (intrusion detection system) software. One drawback of IDS software is it can detect false positives – i.e. an authorized person who has forgotten his password attempts to logon. Firewalls A firewall is a specialized device, or a computer installed with specialized software, that selectively filters or blocks traffic between networks. A firewall typically involves a combination of hardware and software and may reside between two interconnected private networks. The simplest form of a firewall is a packet filtering firewall, which is a router that examines the header of every packet of data it receives to determine whether that type of packet is authorized to continue to its destination or not. Firewalls can block traffic in and out of a LAN. NOS (Network Operating System) Security Regardless of the operating system, generally every network administrator can implement basic security by restricting what users are authorized to do on a network. Some of the restrictions include things related to Logons – place, time of day, total time logged in, etc Passwords – length, characters used, etc Encryption Encryption is the use of an algorithm to scramble data into a format that can be read only by reversing the algorithm. The purpose of encryption is to keep information private. Many forms of encryption exist and new ways of cracking encryption are continually being invented. The following are some categories of encryption… Key Encryption PGP (Pretty Good Privacy) SSL (Secure Sockets Layer) SSH (Secure Shell) SCP (Secure CoPy) SFTP (Secure File Transfer Protocol) IPSec (Internet Protocol Security) For a detailed explanation on each section refer to pages 596 to 604 of textbook Authentication Protocols Authentication protocols are the rules that computers follow to accomplish authentication. Several types exist and the following are some of the common authentication protocols… RADIUS and TACACS PAP (Password Authentication Protocol) CHAP and MS-CHAP EAP (Extensible Authentication Protocol) 802.1x (EAPoL) Kerberos Wireless Network Security Wireless transmissions are particularly susceptible to eavesdropping. The following are two wireless network security protocols WEP WPA

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• Google Apps Email for new Primary Youtube Email

  - by MLM

  I have a YouTube account that I want to change the primary email for but every time I try to add a alternate address it says it is already associated with another google account. The email is a google apps user because I want to manage my domains email through gmail. I have already tried deleting the account and re-creating it to make sure it is not associated with anything. The only way I can add it is if I delete the google apps account but then I can not verify since I need to access the verification email.

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• Auto-Suggest via &lsquo;Trie&rsquo; (Pre-fix Tree)

  - by Strenium

  Auto-Suggest (Auto-Complete) “thing” has been around for a few years. Here’s my little snippet on the subject. For one of my projects, I had to deal with a non-trivial set of items to be pulled via auto-suggest used by multiple concurrent users. Simple, dumb iteration through a list in local cache or back-end access didn’t quite cut it. Enter a nifty little structure, perfectly suited for storing and matching verbal data: “Trie” (http://tinyurl.com/db56g) also known as a Pre-fix Tree: “Unlike a binary search tree, no node in the tree stores the key associated with that node; instead, its position in the tree defines the key with which it is associated. All the descendants of a node have a common prefix of the string associated with that node, and the root is associated with the empty string. Values are normally not associated with every node, only with leaves and some inner nodes that correspond to keys of interest.” This is a very scalable, performing structure. Though, as usual, something ‘fast’ comes at a cost of ‘size’; fortunately RAM is more plentiful today so I can live with that. I won’t bore you with the detailed algorithmic performance here - Google can do a better job of such. So, here’s C# implementation of all this. Let’s start with individual node: Trie Node /// <summary> /// Contains datum of a single trie node. /// </summary> public class AutoSuggestTrieNode {     public char Value { get; set; }       /// <summary>     /// Gets a value indicating whether this instance is leaf node.     /// </summary>     /// <value>     ///     <c>true</c> if this instance is leaf node; otherwise, a prefix node <c>false</c>.     /// </value>     public bool IsLeafNode { get; private set; }       public List<AutoSuggestTrieNode> DescendantNodes { get; private set; }         /// <summary>     /// Initializes a new instance of the <see cref="AutoSuggestTrieNode"/> class.     /// </summary>     /// <param name="value">The phonetic value.</param>     /// <param name="isLeafNode">if set to <c>true</c> [is leaf node].</param>     public AutoSuggestTrieNode(char value = ' ', bool isLeafNode = false)     {         Value = value;         IsLeafNode = isLeafNode;           DescendantNodes = new List<AutoSuggestTrieNode>();     }       /// <summary>     /// Gets the descendants of the pre-fix node, if any.     /// </summary>     /// <param name="descendantValue">The descendant value.</param>     /// <returns></returns>     public AutoSuggestTrieNode GetDescendant(char descendantValue)     {         return DescendantNodes.FirstOrDefault(descendant => descendant.Value == descendantValue);     } }   Quite self-explanatory, imho. A node is either a “Pre-fix” or a “Leaf” node. “Leaf” contains the full “word”, while the “Pre-fix” nodes act as indices used for matching the results.   Ok, now the Trie: Trie Structure /// <summary> /// Contains structure and functionality of an AutoSuggest Trie (Pre-fix Tree) /// </summary> public class AutoSuggestTrie {     private readonly AutoSuggestTrieNode _root = new AutoSuggestTrieNode();       /// <summary>     /// Adds the word to the trie by breaking it up to pre-fix nodes + leaf node.     /// </summary>     /// <param name="word">Phonetic value.</param>     public void AddWord(string word)     {         var currentNode = _root;         word = word.Trim().ToLower();           for (int i = 0; i < word.Length; i++)         {             var child = currentNode.GetDescendant(word[i]);               if (child == null) /* this character hasn't yet been indexed in the trie */             {                 var newNode = new AutoSuggestTrieNode(word[i], word.Count() - 1 == i);                   currentNode.DescendantNodes.Add(newNode);                 currentNode = newNode;             }             else                 currentNode = child; /* this character is already indexed, move down the trie */         }     }         /// <summary>     /// Gets the suggested matches.     /// </summary>     /// <param name="word">The phonetic search value.</param>     /// <returns></returns>     public List<string> GetSuggestedMatches(string word)     {         var currentNode = _root;         word = word.Trim().ToLower();           var indexedNodesValues = new StringBuilder();         var resultBag = new ConcurrentBag<string>();           for (int i = 0; i < word.Trim().Length; i++)  /* traverse the trie collecting closest indexed parent (parent can't be leaf, obviously) */         {             var child = currentNode.GetDescendant(word[i]);               if (child == null || word.Count() - 1 == i)                 break; /* done looking, the rest of the characters aren't indexed in the trie */               indexedNodesValues.Append(word[i]);             currentNode = child;         }           Action<AutoSuggestTrieNode, string> collectAllMatches = null;         collectAllMatches = (node, aggregatedValue) => /* traverse the trie collecting matching leafNodes (i.e. "full words") */             {                 if (node.IsLeafNode) /* full word */                     resultBag.Add(aggregatedValue); /* thread-safe write */                   Parallel.ForEach(node.DescendantNodes, descendandNode => /* asynchronous recursive traversal */                 {                     collectAllMatches(descendandNode, String.Format("{0}{1}", aggregatedValue, descendandNode.Value));                 });             };           collectAllMatches(currentNode, indexedNodesValues.ToString());           return resultBag.OrderBy(o => o).ToList();     }         /// <summary>     /// Gets the total words (leafs) in the trie. Recursive traversal.     /// </summary>     public int TotalWords     {         get         {             int runningCount = 0;               Action<AutoSuggestTrieNode> traverseAllDecendants = null;             traverseAllDecendants = n => { runningCount += n.DescendantNodes.Count(o => o.IsLeafNode); n.DescendantNodes.ForEach(traverseAllDecendants); };             traverseAllDecendants(this._root);               return runningCount;         }     } }   Matching operations and Inserts involve traversing the nodes before the right “spot” is found. Inserts need be synchronous since ordering of data matters here. However, matching can be done in parallel traversal using recursion (line 64). Here’s sample usage:   [TestMethod] public void AutoSuggestTest() {     var autoSuggestCache = new AutoSuggestTrie();       var testInput = @"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer nec odio. Praesent libero.                 Sed cursus ante dapibus diam. Sed nisi. Nulla quis sem at nibh elementum imperdiet. Duis sagittis ipsum. Praesent mauris.                 Fusce nec tellus sed augue semper porta. Mauris massa. Vestibulum lacinia arcu eget nulla. Class aptent taciti sociosqu ad                 litora torquent per conubia nostra, per inceptos himenaeos. Curabitur sodales ligula in libero. Sed dignissim lacinia nunc.                 Curabitur tortor. Pellentesque nibh. Aenean quam. In scelerisque sem at dolor. Maecenas mattis. Sed convallis tristique sem.                 Proin ut ligula vel nunc egestas porttitor. Morbi lectus risus, iaculis vel, suscipit quis, luctus non, massa. Fusce ac                 turpis quis ligula lacinia aliquet. Mauris ipsum. Nulla metus metus, ullamcorper vel, tincidunt sed, euismod in, nibh. Quisque                 volutpat condimentum velit. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Nam                 nec ante. Sed lacinia, urna non tincidunt mattis, tortor neque adipiscing diam, a cursus ipsum ante quis turpis. Nulla                 facilisi. Ut fringilla. Suspendisse potenti. Nunc feugiat mi a tellus consequat imperdiet. Vestibulum sapien. Proin quam. Etiam                 ultrices. Suspendisse in justo eu magna luctus suscipit. Sed lectus. Integer euismod lacus luctus magna. Quisque cursus, metus                 vitae pharetra auctor, sem massa mattis sem, at interdum magna augue eget diam. Vestibulum ante ipsum primis in faucibus orci                 luctus et ultrices posuere cubilia Curae; Morbi lacinia molestie dui. Praesent blandit dolor. Sed non quam. In vel mi sit amet                 augue congue elementum. Morbi in ipsum sit amet pede facilisis laoreet. Donec lacus nunc, viverra nec.";       testInput.Split(' ').ToList().ForEach(word => autoSuggestCache.AddWord(word));       var testMatches = autoSuggestCache.GetSuggestedMatches("le"); }   ..and the result: That’s it!

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• Troubleshooting High-CPU Utilization for SQL Server

  - by Susantha Bathige

  The objective of this FAQ is to outline the basic steps in troubleshooting high CPU utilization on  a server hosting a SQL Server instance. The first and the most common step if you suspect high CPU utilization (or are alerted for it) is to login to the physical server and check the Windows Task Manager. The Performance tab will show the high utilization as shown below: Next, we need to determine which process is responsible for the high CPU consumption. The Processes tab of the Task Manager will show this information: Note that to see all processes you should select Show processes from all user. In this case, SQL Server (sqlserver.exe) is consuming 99% of the CPU (a normal benchmark for max CPU utilization is about 50-60%). Next we examine the scheduler data. Scheduler is a component of SQLOS which evenly distributes load amongst CPUs. The query below returns the important columns for CPU troubleshooting. Note – if your server is under severe stress and you are unable to login to SSMS, you can use another machine’s SSMS to login to the server through DAC – Dedicated Administrator Connection (see http://msdn.microsoft.com/en-us/library/ms189595.aspx for details on using DAC) SELECT scheduler_id ,cpu_id ,status ,runnable_tasks_count ,active_workers_count ,load_factor ,yield_count FROM sys.dm_os_schedulers WHERE scheduler_id See below for the BOL definitions for the above columns. scheduler_id – ID of the scheduler. All schedulers that are used to run regular queries have ID numbers less than 1048576. Those schedulers that have IDs greater than or equal to 1048576 are used internally by SQL Server, such as the dedicated administrator connection scheduler. cpu_id – ID of the CPU with which this scheduler is associated. status – Indicates the status of the scheduler. runnable_tasks_count – Number of workers, with tasks assigned to them that are waiting to be scheduled on the runnable queue. active_workers_count – Number of workers that are active. An active worker is never preemptive, must have an associated task, and is either running, runnable, or suspended. current_tasks_count - Number of current tasks that are associated with this scheduler. load_factor – Internal value that indicates the perceived load on this scheduler. yield_count – Internal value that is used to indicate progress on this scheduler.                                                                 Now to interpret the above data. There are four schedulers and each assigned to a different CPU. All the CPUs are ready to accept user queries as they all are ONLINE. There are 294 active tasks in the output as per the current_tasks_count column. This count indicates how many activities currently associated with the schedulers. When a  task is complete, this number is decremented. The 294 is quite a high figure and indicates all four schedulers are extremely busy. When a task is enqueued, the load_factor  value is incremented. This value is used to determine whether a new task should be put on this scheduler or another scheduler. The new task will be allocated to less loaded scheduler by SQLOS. The very high value of this column indicates all the schedulers have a high load. There are 268 runnable tasks which mean all these tasks are assigned a worker and waiting to be scheduled on the runnable queue.   The next step is  to identify which queries are demanding a lot of CPU time. The below query is useful for this purpose (note, in its current form,  it only shows the top 10 records). SELECT TOP 10 st.text  ,st.dbid  ,st.objectid  ,qs.total_worker_time  ,qs.last_worker_time  ,qp.query_plan FROM sys.dm_exec_query_stats qs CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) st CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) qp ORDER BY qs.total_worker_time DESC This query as total_worker_time as the measure of CPU load and is in descending order of the  total_worker_time to show the most expensive queries and their plans at the top:      Note the BOL definitions for the important columns: total_worker_time - Total amount of CPU time, in microseconds, that was consumed by executions of this plan since it was compiled. last_worker_time - CPU time, in microseconds, that was consumed the last time the plan was executed.   I re-ran the same query again after few seconds and was returned the below output. After few seconds the SP dbo.TestProc1 is shown in fourth place and once again the last_worker_time is the highest. This means the procedure TestProc1 consumes a CPU time continuously each time it executes.      In this case, the primary cause for high CPU utilization was a stored procedure. You can view the execution plan by clicking on query_plan column to investigate why this is causing a high CPU load. I have used SQL Server 2008 (SP1) to test all the queries used in this article.

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• SQL SERVER – PREEMPTIVE and Non-PREEMPTIVE – Wait Type – Day 19 of 28

  - by pinaldave

  In this blog post, we are going to talk about a very interesting subject. I often get questions related to SQL Server 2008 Book-Online about various Preemptive wait types. I got a few questions asking what these wait types are and how they could be interpreted. To get current wait types of the system, you can read this article and run the script: SQL SERVER – DMV – sys.dm_os_waiting_tasks and sys.dm_exec_requests – Wait Type – Day 4 of 28. Before we continue understanding them, let us study first what PREEMPTIVE and Non-PREEMPTIVE waits in SQL Server mean. PREEMPTIVE: Simply put, this wait means non-cooperative. While SQL Server is executing a task, the Operating System (OS) interrupts it. This leads to SQL Server to involuntarily give up the execution for other higher priority tasks. This is not good for SQL Server as it is a particular external process which makes SQL Server to yield. This kind of wait can reduce the performance drastically and needs to be investigated properly. Non-PREEMPTIVE: In simple terms, this wait means cooperative. SQL Server manages the scheduling of the threads. When SQL Server manages the scheduling instead of the OS, it makes sure its own priority. In this case, SQL Server decides the priority and one thread yields to another thread voluntarily. In the earlier version of SQL Server, there was no preemptive wait types mentioned and the associated task status with them was marked as suspended. In SQL Server 2005, preemptive wait types were not listed as well, but their associated task status was marked as running. In SQL Server 2008, preemptive wait types are properly listed and their associated task status is also marked as running. Now, SQL Server is in Non-Preemptive mode by default and it works fine. When CLR, extended Stored Procedures and other external components run, they run in Preemptive mode, leading to the creation of these wait types. There are a wide variety of preemptive wait types. If you see consistent high value in the Preemptive wait types, I strongly suggest that you look into the wait type and try to know the root cause. If you are still not sure, you can send me an email or leave a comment about it and I will do my best to help you reduce this wait type. Read all the post in the Wait Types and Queue series. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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• The Ins and Outs of Effective Smart Grid Data Management

  - by caroline.yu

  Oracle Utilities and Accenture recently sponsored a one-hour Web cast entitled, "The Ins and Outs of Effective Smart Grid Data Management." Oracle and Accenture created this Web cast to help utilities better understand the types of data collected over smart grid networks and the issues associated with mapping out a coherent information management strategy. The Web cast also addressed important points that utilities must consider with the imminent flood of data that both present and next-generation smart grid components will generate. The three speakers, including Oracle Utilities' Brad Williams, focused on the key factors associated with taking the millions of data points captured in real time and implementing the strategies, frameworks and technologies that enable utilities to process, store, analyze, visualize, integrate, transport and transform data into the information required to deliver targeted business benefits. The Web cast replay is available here. The Web cast slides are available here.

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• Notes on Oracle BPM PS6 Adaptive Case Management

  - by gcolman

  v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} I have recently been looking at the  latest release of the BPM Case Management feature in the Oracle BPM PS6 release. I had put together some notes to help me gain a better understanding of the context of the PS6 BPM Case Management. Hopefully, this along with the other resources will enable you to gain a clear picture of the flexibility of this feature. Oracle BPM PS6 release includes Case Management capability. This initial release aims to provide: Case Management Framework Integration of Case Management with BPM & SOA suite It is best to regard the current PS6 case management feature as a case management framework. The framework provides the building blocks for creating a case management system that is fully integrated into Oracle BPM suite. As of the current PS6 release, no UI tooling exists to help manage cases or the case lifecycle. Mark Foster has written a good blog which outlines Case Management within PS6 in the following link. I wanted to provide more context on Case Management from my perspective in this blog. PS6 Case Management - High level View BPM PS6 includes “Case” as a first class component in a SOA Suite composite. The Case components (added to the SOA Composite) are created when a BPM process is assigned to a case in JDveloper. The SOA Case component is defined and configured within JDevloper, which allows us to specify the case data structures and metadata such as stakeholders, outcomes, milestones, document stores etc. "Activities" are associated with a case, and become available to be executed via the case apis. Activities are BPM processes, Human Activities or Java call outs. The PS6 release includes some additional database tables to store the case metadata and case instance data (data object, comments, etc…). These new tables are created within the SOA_INFRA schema and the documents associated with that case into a document repository that is configured with the case. One of the main features of Case Management is the control of the case logic through case events and case business rules. A PS6 Case has an associated business rule component, which can be configured to control the availability and execution of activities within the case. The business rules component is able to act upon events that the PS6 Case Management framework generates during the lifecycle of that case. Events are fired during the lifetime of the case (e.g. Case created, activity started, activity ended, note added, document uploaded.) Internal Case state The internal state of a case is represented by the diagram below. This shows the internal states and the transition paths for a Case from one state to the next Each transition in state will create an event that can be enacted upon via the Case rules engine. The internal case state lifecycle is defined as follows Defining a case A Case is created and defined as a component of a JDeveloper BPM project. When you create a Case as part of a BPM project, JDeveloper, creates the following components within the SCA composite: Case component Case component interfaces (WSDL etc) Case Rules component (Oracle Business Rules) Adds the Case Component and Case Rules Component to the BPM SOA composite Case Configuration The following section gives a high level overview of the items that can be configured for a BPM Case. Case Activities A Case is associated with a set of activities that are to be performed as part of that Case. Case activities can be: SOA Human Tasks BPM processes Custom Task (Java Class) Case activities are created from pre-existing BPM process or human tasks, which, once defined, can be configured additionally as Case activities in JDeveloper and made available within the lifecycle of a case. I've described the following configurable components of a case (very!) briefly as: Milestones Milestones are (optional) user defined logical milestones that can be achieved within a case. No activities are associates with a milestone, but milestone attainment can be programmatically set and events raised when milestones are reached Outcomes User defined status of a completed case. An event is fired when an outcome is attained. Case Data Defines the data that will be stored with a case XML schemas define the data that is stored with the case. Case Documents Defines the location of documents that are attached to a case (e.g. WebCenter Content) User Defined Events Optional user defined events that can be fired or captured to drive case processing rules Stakeholders Defines the actors who can participate in the case (roles, users, groups) Defines permissions for individual case permissions (read case, create document etc…) Business Rules Business rules are the main component controlling the flow of a Case Each case has an associated business ruleset Rules are fired on receiving Case events (or User defined events) Life cycle events Milestone events Activity events Data events Document events Comment events User event Managing the Case Managing the lifecycle of a case is achieved in two ways: Managing case logic with Business Rules Managing the case lifecycle via the Case APIs. A BPM Case can be viewed as a set of case data & documents along with the activities that can be performed within a case and also the case lifecycle state expressed as milestones and internal lifecycle state. The management of the case life is achieved though both the configuration of business rules and the “manual” interaction with a case instance through the Case APIs. Business Rules and Case Events A key component within the Case management framework is the event model. The BPM Case Management solution internally utilizes Oracle EDN (Event Delivery Network) to publish and subscribe to events generated by the Case framework. Events are generated by the Case framework on each of the processes and stages that a case instance will travel on its lifetime. The following case events are part of the BPM Case: Life cycle events Milestone events Activity events Data events Document events Comment events User event The Case business rules are configured to listen for these events, and business logic can be coded into the Case rules component to enact upon an event being received. Case API & Interaction Along with the business rules component, Cases can be managed via the Case API interfaces. These interfaces allow for the building of custom applications to integrate into case management framework. The API’s allow for updating case comments & documents, executing case activities, updating milestones etc. As there is no in built case management UI functions within the PS6 release, Cases need to be managed via a custom built UI, interacting with selected case instances, launching case activities, closing cases etc. (There is expected to be a UI component within subsequent releases) Logical Case Flow The diagram below is intended to depict a logical view of the case steps for a typical case. A UI or other service calls the Case interface to create a Case instance The case instance is created & database data inserted A lifecycle event is raised indicating a case activity (created) event The case business rules capture the event and decide on an action to take Additionally other parties can subscribe to Case events via EDN The business rules may handle the event, e.g. configured to execute a case activity on case creation event The BPM/Human Workflow/Custom activity is executed A case activity event is raised on the execute activity A case work UI or business service can inspect the case instance and call other actions to progress that case, such as: Execute activity Add Note Add document Add case data Update Milestone Raise user defined event Suspend case Resume case Close Case Summary Having had a little time to play around with the APIs and the case configuration, I really like the flexibility and power of combining Oracle Business Rules and the BPM Case Management event model. Creating something this flexible and powerful without BPM Case Management would take a lot of time and effort. This is hopefully going to save my customers a lot of time and effort! I may make amendments to this post as my understanding of Case Management increases! Take a look at the following links for official documentation etc. http://docs.oracle.com/cd/E28280_01/doc.1111/e15176/case_mgmt_bpmpd.htm https://blogs.oracle.com/bpm/entry/just_in_case Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif";}

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• Can't install graphic drivers in 12.04

  - by yinon

  The driver is ATI/AMD proprietary FGLRX graphics driver. After clicking Activate, it asks for my password and starts downloading. Then it shows an error message: 2012-10-03 16:16:04,227 DEBUG: updating <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> 2012-10-03 16:16:06,172 DEBUG: reading modalias file /lib/modules/3.2.0-29-generic-pae/modules.alias 2012-10-03 16:16:06,383 DEBUG: reading modalias file /usr/share/jockey/modaliases/b43 2012-10-03 16:16:06,386 DEBUG: reading modalias file /usr/share/jockey/modaliases/disable-upstream-nvidia 2012-10-03 16:16:06,456 DEBUG: loading custom handler /usr/share/jockey/handlers/pvr-omap4.py 2012-10-03 16:16:06,506 WARNING: modinfo for module omapdrm_pvr failed: ERROR: modinfo: could not find module omapdrm_pvr 2012-10-03 16:16:06,509 DEBUG: Instantiated Handler subclass __builtin__.PVROmap4Driver from name PVROmap4Driver 2012-10-03 16:16:06,682 DEBUG: PowerVR SGX proprietary graphics driver for OMAP 4 not available 2012-10-03 16:16:06,682 DEBUG: loading custom handler /usr/share/jockey/handlers/cdv.py 2012-10-03 16:16:06,727 WARNING: modinfo for module cedarview_gfx failed: ERROR: modinfo: could not find module cedarview_gfx 2012-10-03 16:16:06,728 DEBUG: Instantiated Handler subclass __builtin__.CdvDriver from name CdvDriver 2012-10-03 16:16:06,728 DEBUG: cdv.available: falling back to default 2012-10-03 16:16:06,772 DEBUG: Intel Cedarview graphics driver availability undetermined, adding to pool 2012-10-03 16:16:06,772 DEBUG: loading custom handler /usr/share/jockey/handlers/vmware-client.py 2012-10-03 16:16:06,781 WARNING: modinfo for module vmxnet failed: ERROR: modinfo: could not find module vmxnet 2012-10-03 16:16:06,781 DEBUG: Instantiated Handler subclass __builtin__.VmwareClientHandler from name VmwareClientHandler 2012-10-03 16:16:06,795 DEBUG: VMWare Client Tools availability undetermined, adding to pool 2012-10-03 16:16:06,796 DEBUG: loading custom handler /usr/share/jockey/handlers/fglrx.py 2012-10-03 16:16:06,801 WARNING: modinfo for module fglrx_updates failed: ERROR: modinfo: could not find module fglrx_updates 2012-10-03 16:16:06,805 DEBUG: Instantiated Handler subclass __builtin__.FglrxDriverUpdate from name FglrxDriverUpdate 2012-10-03 16:16:06,805 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:06,833 DEBUG: ATI/AMD proprietary FGLRX graphics driver (post-release updates) availability undetermined, adding to pool 2012-10-03 16:16:06,836 WARNING: modinfo for module fglrx failed: ERROR: modinfo: could not find module fglrx 2012-10-03 16:16:06,840 DEBUG: Instantiated Handler subclass __builtin__.FglrxDriver from name FglrxDriver 2012-10-03 16:16:06,840 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:06,873 DEBUG: ATI/AMD proprietary FGLRX graphics driver availability undetermined, adding to pool 2012-10-03 16:16:06,873 DEBUG: loading custom handler /usr/share/jockey/handlers/dvb_usb_firmware.py 2012-10-03 16:16:06,925 DEBUG: Instantiated Handler subclass __builtin__.DvbUsbFirmwareHandler from name DvbUsbFirmwareHandler 2012-10-03 16:16:06,926 DEBUG: Firmware for DVB cards not available 2012-10-03 16:16:06,926 DEBUG: loading custom handler /usr/share/jockey/handlers/nvidia.py 2012-10-03 16:16:06,961 WARNING: modinfo for module nvidia_96 failed: ERROR: modinfo: could not find module nvidia_96 2012-10-03 16:16:06,967 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver96 from name NvidiaDriver96 2012-10-03 16:16:06,968 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:06,980 DEBUG: XorgDriverHandler(nvidia_96, nvidia-96, None): Disabling as package video ABI xorg-video-abi-10 does not match X.org video ABI xorg-video-abi-11 2012-10-03 16:16:06,980 DEBUG: NVIDIA accelerated graphics driver not available 2012-10-03 16:16:06,983 WARNING: modinfo for module nvidia_current failed: ERROR: modinfo: could not find module nvidia_current 2012-10-03 16:16:06,987 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriverCurrent from name NvidiaDriverCurrent 2012-10-03 16:16:06,987 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,015 DEBUG: NVIDIA accelerated graphics driver availability undetermined, adding to pool 2012-10-03 16:16:07,018 WARNING: modinfo for module nvidia_current_updates failed: ERROR: modinfo: could not find module nvidia_current_updates 2012-10-03 16:16:07,021 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriverCurrentUpdates from name NvidiaDriverCurrentUpdates 2012-10-03 16:16:07,022 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,066 DEBUG: NVIDIA accelerated graphics driver (post-release updates) availability undetermined, adding to pool 2012-10-03 16:16:07,069 WARNING: modinfo for module nvidia_173_updates failed: ERROR: modinfo: could not find module nvidia_173_updates 2012-10-03 16:16:07,072 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver173Updates from name NvidiaDriver173Updates 2012-10-03 16:16:07,073 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,105 DEBUG: NVIDIA accelerated graphics driver (post-release updates) availability undetermined, adding to pool 2012-10-03 16:16:07,112 WARNING: modinfo for module nvidia_173 failed: ERROR: modinfo: could not find module nvidia_173 2012-10-03 16:16:07,118 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver173 from name NvidiaDriver173 2012-10-03 16:16:07,119 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,159 DEBUG: NVIDIA accelerated graphics driver availability undetermined, adding to pool 2012-10-03 16:16:07,166 WARNING: modinfo for module nvidia_96_updates failed: ERROR: modinfo: could not find module nvidia_96_updates 2012-10-03 16:16:07,171 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver96Updates from name NvidiaDriver96Updates 2012-10-03 16:16:07,171 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,188 DEBUG: XorgDriverHandler(nvidia_96_updates, nvidia-96-updates, None): Disabling as package video ABI xorg-video-abi-10 does not match X.org video ABI xorg-video-abi-11 2012-10-03 16:16:07,188 DEBUG: NVIDIA accelerated graphics driver (post-release updates) not available 2012-10-03 16:16:07,188 DEBUG: loading custom handler /usr/share/jockey/handlers/madwifi.py 2012-10-03 16:16:07,195 WARNING: modinfo for module ath_pci failed: ERROR: modinfo: could not find module ath_pci 2012-10-03 16:16:07,195 DEBUG: Instantiated Handler subclass __builtin__.MadwifiHandler from name MadwifiHandler 2012-10-03 16:16:07,196 DEBUG: Alternate Atheros "madwifi" driver availability undetermined, adding to pool 2012-10-03 16:16:07,196 DEBUG: loading custom handler /usr/share/jockey/handlers/sl_modem.py 2012-10-03 16:16:07,213 DEBUG: Instantiated Handler subclass __builtin__.SlModem from name SlModem 2012-10-03 16:16:07,234 DEBUG: Software modem not available 2012-10-03 16:16:07,234 DEBUG: loading custom handler /usr/share/jockey/handlers/broadcom_wl.py 2012-10-03 16:16:07,239 WARNING: modinfo for module wl failed: ERROR: modinfo: could not find module wl 2012-10-03 16:16:07,277 DEBUG: Instantiated Handler subclass __builtin__.BroadcomWLHandler from name BroadcomWLHandler 2012-10-03 16:16:07,277 DEBUG: Broadcom STA wireless driver availability undetermined, adding to pool 2012-10-03 16:16:07,278 DEBUG: all custom handlers loaded 2012-10-03 16:16:07,278 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000027D8sv00001043sd000082EAbc04sc03i00') 2012-10-03 16:16:07,568 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel'} 2012-10-03 16:16:07,699 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,699 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel'} 2012-10-03 16:16:07,699 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,699 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'input:b0000v0000p0000e0000-e0,5,kramlsfw6,') 2012-10-03 16:16:07,704 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'evbug'} 2012-10-03 16:16:07,704 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'evbug', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,704 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000027DAsv00001043sd00008179bc0Csc05i00') 2012-10-03 16:16:07,707 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'i2c_i801'} 2012-10-03 16:16:07,707 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'i2c_i801', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,707 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0C01:') 2012-10-03 16:16:07,707 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0B00:') 2012-10-03 16:16:07,707 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00001969d00001026sv00001043sd00008304bc02sc00i00') 2012-10-03 16:16:07,710 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'atl1e'} 2012-10-03 16:16:07,710 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'atl1e', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,710 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'input:b0003v04F2p0816e0111-e0,1,4,11,14,k71,72,73,74,75,77,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,8C,8E,96,98,9E,9F,A1,A3,A4,A5,A6,AD,B0,B1,B2,B3,B4,B7,B8,B9,BA,BB,BC,BD,BE,BF,C0,C1,C2,F0,ram4,l0,1,2,sfw') 2012-10-03 16:16:07,711 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'evbug'} 2012-10-03 16:16:07,711 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'evbug', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,711 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid'} 2012-10-03 16:16:07,711 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,711 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'platform:pcspkr') 2012-10-03 16:16:07,711 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'pcspkr'} 2012-10-03 16:16:07,711 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'pcspkr', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,712 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_pcsp'} 2012-10-03 16:16:07,712 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_pcsp', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,712 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'usb:v1D6Bp0001d0302dc09dsc00dp00ic09isc00ip00') 2012-10-03 16:16:07,724 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'input:b0019v0000p0001e0000-e0,1,k74,ramlsfw') 2012-10-03 16:16:07,724 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'evbug'} 2012-10-03 16:16:07,724 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'evbug', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,724 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid'} 2012-10-03 16:16:07,724 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,724 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0C04:') 2012-10-03 16:16:07,724 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'platform:eisa') 2012-10-03 16:16:07,725 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000027CCsv00001043sd00008179bc0Csc03i20') 2012-10-03 16:16:07,728 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'platform:Fixed MDIO bus') 2012-10-03 16:16:07,728 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000029C0sv00001043sd000082B0bc06sc00i00') 2012-10-03 16:16:07,731 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'usb:v045Ep0766d0101dcEFdsc02dp01ic01isc01ip00') 2012-10-03 16:16:07,777 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_usb_audio'} 2012-10-03 16:16:07,777 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_usb_audio', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,777 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0F03:PNP0F13:') 2012-10-03 16:16:07,777 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0000:') 2012-10-03 16:16:07,777 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00001002d000095C5sv0000174Bsd0000E400bc03sc00i00') 2012-10-03 16:16:08,072 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'fglrx_updates', 'package': 'fglrx-updates'} 2012-10-03 16:16:08,133 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None 2012-10-03 16:16:08,134 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:16:08,072 DEBUG: found match in handler pool xorg:fglrx_updates([FglrxDriverUpdate, nonfree, disabled] ATI/AMD proprietary FGLRX graphics driver (post-release updates)) 2012-10-03 16:16:08,136 WARNING: modinfo for module fglrx_updates failed: ERROR: modinfo: could not find module fglrx_updates 2012-10-03 16:16:08,147 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:08,173 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None 2012-10-03 16:16:08,173 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:16:08,162 DEBUG: got handler xorg:fglrx_updates([FglrxDriverUpdate, nonfree, disabled] ATI/AMD proprietary FGLRX graphics driver (post-release updates)) 2012-10-03 16:16:08,173 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'fglrx', 'package': 'fglrx'} 2012-10-03 16:16:08,184 DEBUG: fglrx.enabled(fglrx): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None 2012-10-03 16:16:08,184 DEBUG: fglrx is not the alternative in use 2012-10-03 16:16:08,173 DEBUG: found match in handler pool xorg:fglrx([FglrxDriver, nonfree, disabled] ATI/AMD proprietary FGLRX graphics driver) 2012-10-03 16:16:08,187 WARNING: modinfo for module fglrx failed: ERROR: modinfo: could not find module fglrx 2012-10-03 16:16:08,190 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:08,216 DEBUG: fglrx.enabled(fglrx): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None . . . 2012-10-03 16:18:10,552 DEBUG: install progress initramfs-tools 62.500000 2012-10-03 16:18:22,249 DEBUG: install progress libc-bin 62.500000 2012-10-03 16:18:23,251 DEBUG: Selecting previously unselected package dkms. (Reading database ... 142496 files and directories currently installed.) Unpacking dkms (from .../dkms_2.2.0.3-1ubuntu3_all.deb) ... Selecting previously unselected package fakeroot. Unpacking fakeroot (from .../fakeroot_1.18.2-1_i386.deb) ... Selecting previously unselected package fglrx-updates. Unpacking fglrx-updates (from .../fglrx-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Selecting previously unselected package fglrx-amdcccle-updates. Unpacking fglrx-amdcccle-updates (from .../fglrx-amdcccle-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Processing triggers for man-db ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot dpkg: error processing libxss1 (--configure): package libxss1 is already installed and configured dpkg: error processing chromium-codecs-ffmpeg (--configure): package chromium-codecs-ffmpeg is already installed and configured dpkg: error processing chromium-browser (--configure): package chromium-browser is already installed and configured dpkg: error processing chromium-browser-l10n (--configure): package chromium-browser-l10n is already installed and configured Setting up dkms (2.2.0.3-1ubuntu3) ... No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already Setting up fakeroot (1.18.2-1) ... update-alternatives: using /usr/bin/fakeroot-sysv to provide /usr/bin/fakeroot (fakeroot) in auto mode. Setting up fglrx-updates (2:8.960-0ubuntu1.1) ... update-alternatives: using /usr/lib/fglrx/ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode. update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl64.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl64.icd (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalcl.so because associated file /usr/lib32/fglrx/libaticalcl.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalrt.so because associated file /usr/lib32/fglrx/libaticalrt.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: using /usr/lib/fglrx/alt_ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode. update-initramfs: deferring update (trigger activated) Loading new fglrx-updates-8.960 DKMS files... First Installation: checking all kernels... Building only for 3.2.0-29-generic-pae Building for architecture i686 Building initial module for 3.2.0-29-generic-pae Done. fglrx_updates: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/3.2.0-29-generic-pae/updates/dkms/ depmod...... DKMS: install completed. update-initramfs: deferring update (trigger activated) Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Setting up fglrx-amdcccle-updates (2:8.960-0ubuntu1.1) ... Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-29-generic-pae Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: libxss1 chromium-codecs-ffmpeg chromium-browser chromium-browser-l10n Error in function: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1) 2012-10-03 16:18:23,256 ERROR: Package failed to install: Selecting previously unselected package dkms. (Reading database ... 142496 files and directories currently installed.) Unpacking dkms (from .../dkms_2.2.0.3-1ubuntu3_all.deb) ... Selecting previously unselected package fakeroot. Unpacking fakeroot (from .../fakeroot_1.18.2-1_i386.deb) ... Selecting previously unselected package fglrx-updates. Unpacking fglrx-updates (from .../fglrx-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Selecting previously unselected package fglrx-amdcccle-updates. Unpacking fglrx-amdcccle-updates (from .../fglrx-amdcccle-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Processing triggers for man-db ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot dpkg: error processing libxss1 (--configure): package libxss1 is already installed and configured dpkg: error processing chromium-codecs-ffmpeg (--configure): package chromium-codecs-ffmpeg is already installed and configured dpkg: error processing chromium-browser (--configure): package chromium-browser is already installed and configured dpkg: error processing chromium-browser-l10n (--configure): package chromium-browser-l10n is already installed and configured Setting up dkms (2.2.0.3-1ubuntu3) ... No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already Setting up fakeroot (1.18.2-1) ... update-alternatives: using /usr/bin/fakeroot-sysv to provide /usr/bin/fakeroot (fakeroot) in auto mode. Setting up fglrx-updates (2:8.960-0ubuntu1.1) ... update-alternatives: using /usr/lib/fglrx/ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode. update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl64.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl64.icd (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalcl.so because associated file /usr/lib32/fglrx/libaticalcl.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalrt.so because associated file /usr/lib32/fglrx/libaticalrt.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: using /usr/lib/fglrx/alt_ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode. update-initramfs: deferring update (trigger activated) Loading new fglrx-updates-8.960 DKMS files... First Installation: checking all kernels... Building only for 3.2.0-29-generic-pae Building for architecture i686 Building initial module for 3.2.0-29-generic-pae Done. fglrx_updates: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/3.2.0-29-generic-pae/updates/dkms/ depmod...... DKMS: install completed. update-initramfs: deferring update (trigger activated) Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Setting up fglrx-amdcccle-updates (2:8.960-0ubuntu1.1) ... Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-29-generic-pae Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: libxss1 chromium-codecs-ffmpeg chromium-browser chromium-browser-l10n Error in function: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1) 2012-10-03 16:18:23,590 WARNING: /sys/module/fglrx_updates/drivers does not exist, cannot rebind fglrx_updates driver 2012-10-03 16:18:43,601 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:43,601 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:43,617 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:43,617 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,143 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,144 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,154 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,154 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,182 DEBUG: fglrx.enabled(fglrx): target_alt /usr/lib/fglrx/ld.so.conf current_alt /usr/lib/fglrx/ld.so.conf other target alt /usr/lib/fglrx/alt_ld.so.conf other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,182 DEBUG: XorgDriverHandler(%s, %s).enabled(): No X.org driver set, not checking 2012-10-03 16:18:54,215 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,215 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,229 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,229 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,268 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,268 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,279 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,279 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,298 DEBUG: fglrx.enabled(fglrx): target_alt /usr/lib/fglrx/ld.so.conf current_alt /usr/lib/fglrx/ld.so.conf other target alt /usr/lib/fglrx/alt_ld.so.conf other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,298 DEBUG: XorgDriverHandler(%s, %s).enabled(): No X.org driver set, not checking 2012-10-03 16:18:57,828 DEBUG: Shutting down I don't know how to troubleshoot from looking at the log file, could somebody assist me with this please? You can download the log file at: https://www.dropbox.com/s/a59d2hyabo02q5z/jockey.log

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• Again WPA Connection problem even after changed to latest version ..please help

  - by Renjith G

  I am using hostapd, wireless tools with madwifi for my wireless ap in my board. The WEP, WPA-PSK connections and communications between my board with linux and my desktop PC, Windows XP SP2 (with Olitec USB wireless) are fine. But when I configured the WPA type, the connection seems established but shows the status "TKIP - Key Absent" in the security dialog box. Anyone faced this problem? Am attaching the conf files and the connection status. In the AP side am complaining . I am using the in built radius server conf with the hostapd 0.4.7 hostapd.conf interface=ath0 driver=madwifi logger_syslog=0 logger_syslog_level=0 logger_stdout=0 logger_stdout_level=0 debug=0 eapol_key_index_workaround=1 dump_file=/tmp/hostapd.dump.0.0 ssid=Renjith G wpa wpa=1 wpa_passphrase=mypassphrase wpa_key_mgmt=WPA-EAP wpa_pairwise=TKIP CCMP wpa_group_rekey=600 macaddr_acl=2 /* commented */ ieee8021x=1 /* commented */ eap_authenticator=1 own_ip_addr=172.16.25.1 nas_identifier=renjithg.com auth_server_addr=172.16.25.1 auth_server_port=1812 auth_server_shared_secret=key1 ca_cert=/flash1/ca.crt server_cert=/flash1/server.crt eap_user_file=/etc/hostapd.eap_user hostapd.eap_user "*@renjithg.com" TLS And the commands am using are wlanconfig ath0 create wlandev wifi0 wlanmode ap iwconfig ath0 essid Renjith channel 6 ifconfig ath0 192.168.25.1 netmask 255.255.255.0 up hostapd -ddd /etc/hostapd.conf Please correct if am wrong .. Also am getting the debug messages on my AP when am connecting in my windows machine through WPA ~/wlanexe # ./hostapd -ddd /etc/hostapd.conf Configuration file: /etc/hostapd.conf Line 18: obsolete eap_authenticator used; this has been renamed to eap_server madwifi_set_iface_flags: dev_up=0 Using interface ath0 with hwaddr 00:0b:6b:33:8c:30 and ssid 'Renjith G wpa' madwifi_set_ieee8021x: enabled=1 madwifi_configure_wpa: group key cipher=1 madwifi_configure_wpa: pairwise key ciphers=0xa madwifi_configure_wpa: key management algorithms=0x1 madwifi_configure_wpa: rsn capabilities=0x0 madwifi_configure_wpa: enable WPA= 0x1 madwifi_set_iface_flags: dev_up=1 madwifi_set_privacy: enabled=1 WPA: group state machine entering state GTK_INIT GMK - hexdump(len=32): 9c 77 cd 38 5a 60 3b 16 8a 22 90 e8 65 b3 c2 86 40 5c be c3 dd 84 3e df 58 1d 16 61 1d 13 d1 f2 GTK - hexdump(len=32): 02 78 d7 d3 5d 15 e3 89 9c 62 a8 fe 8a 0f 40 28 ba dc cd bc 07 f4 59 88 1c 08 84 2b 49 3d e2 32 WPA: group state machine entering state SETKEYSDONE madwifi_set_key: alg=TKIP addr=00:00:00:00:00:00 key_idx=1 Flushing old station entries madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=3 Deauthenticate all stations l2_packet_receive - recvfrom: Network is down Wireless event: cmd=0x8c03 len=20 New STA WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 WPA: 00:0a:78:a0:0b:09 WPA_PTK_GROUP entering state IDLE WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION2 IEEE 802.1X: 4 bytes from 00:0a:78:a0:0b:09 IEEE 802.1X: version=1 type=1 length=0 Wireless event: cmd=0x8c04 len=20 madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state DISCONNECTED WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument Wireless event: cmd=0x8c03 len=20 New STA WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 WPA: 00:0a:78:a0:0b:09 WPA_PTK_GROUP entering state IDLE WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION2 IEEE 802.1X: 4 bytes from 00:0a:78:a0:0b:09 IEEE 802.1X: version=1 type=1 length=0 < Register Fail < Register Fail Wireless event: cmd=0x8c04 len=20 madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state DISCONNECTED WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument Wireless event: cmd=0x8c03 len=20 New STA WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 WPA: 00:0a:78:a0:0b:09 WPA_PTK_GROUP entering state IDLE WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION2 IEEE 802.1X: 4 bytes from 00:0a:78:a0:0b:09 IEEE 802.1X: version=1 type=1 length=0 NOW am getting the following error message with latest tools. *This is the latest error messages..please refer this only..* ~/wlanexe # ./hostapd -ddd /etc/hostapd.conf TLS: Trusted root certificate(s) loaded madwifi_set_iface_flags: dev_up=0 madwifi_set_privacy: enabled=0 BSS count 1, BSSID mask ff:ff:ff:ff:ff:ff (0 bits) Flushing old station entries madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=3 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 3) Could not connect to kernel driver. Deauthenticate all stations madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=2 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 2) madwifi_set_privacy: enabled=0 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=0 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=1 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=2 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=3 Using interface ath0 with hwaddr 00:0b:6b:33:8c:30 and ssid 'RenjithGwpa' SSID - hexdump_ascii(len=11): 52 65 6e 6a 69 74 68 47 77 70 61 RenjithGwpa PSK (ASCII passphrase) - hexdump_ascii(len=12): 6d 79 70 61 73 73 70 68 72 61 73 65 mypassphrase PSK (from passphrase) - hexdump(len=32): a6 55 3e 76 94 8b d9 81 a1 22 5e 24 29 83 33 86 11 a8 7e 93 19 7c a9 ab ab cc 12 58 37 e5 35 b6 RADIUS local address: 172.16.25.1:1024 madwifi_set_ieee8021x: enabled=1 madwifi_configure_wpa: group key cipher=1 madwifi_configure_wpa: pairwise key ciphers=0xa madwifi_configure_wpa: key management algorithms=0x1 madwifi_configure_wpa: rsn capabilities=0x0 madwifi_configure_wpa: enable WPA=0x1 WPA: group state machine entering state GTK_INIT (VLAN-ID 0) GMK - hexdump(len=32): [REMOVED] GTK - hexdump(len=32): [REMOVED] WPA: group state machine entering state SETKEYSDONE (VLAN-ID 0) madwifi_set_key: alg=TKIP addr=00:00:00:00:00:00 key_idx=1 madwifi_set_privacy: enabled=1 madwifi_set_iface_flags: dev_up=1 ath0: Setup of interface done. l2_packet_receive - recvfrom: Network is down Wireless event: cmd=0x8b1a len=24 Wireless event: cmd=0x8c03 len=20 New STA ioctl[unknown???]: Invalid argument madwifi_process_wpa_ie: Failed to get WPA/RSN IE Failed to get WPA/RSN information element. Data frame from not associated STA 00:0a:78:a0:0b:09 Wireless event: cmd=0x8c04 len=20 Wireless event: cmd=0x8c03 len=20 New STA ioctl[unknown???]: Invalid argument madwifi_process_wpa_ie: Failed to get WPA/RSN IE Failed to get WPA/RSN information element. Data frame from not associated STA 00:0a:78:a0:0b:09 Data frame from not associated STA 00:0a:78:a0:0b:09 Data frame from not associated STA 00:0a:78:a0:0b:09 Wireless event: cmd=0x8c04 len=20 Wireless event: cmd=0x8c03 len=20 New STA ioctl[unknown???]: Invalid argument madwifi_process_wpa_ie: Failed to get WPA/RSN IE Failed to get WPA/RSN information element. Data frame from not associated STA 00:0a:78:a0:0b:09

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• Working with EO composition associations via ADF BC SDO web services

  - by Chris Muir

  ADF Business Components support the ability to publish the underlying Application Modules (AMs) and View Objects (VOs) as web services through Service Data Objects (SDOs).  This blog post looks at a minor challenge to overcome when using SDOs and Entity Objects (EOs) that use a composition association. Using the default ADF BC EO association behaviour ADF BC components allow you to work with VOs that are based on EOs that are a part of a parent-child composition association.  A composition association enforces that you cannot create records for the child outside the context of the parent.  As example when creating invoice-lines you want to enforce the individual lines have a relating parent invoice record, it just simply doesn't make sense to save invoice-lines without their parent invoice record. In the following screenshot using the ADF BC Tester it demonstrates the correct way to create a child Employees record as part of a composition association with Departments: And the following screenshot shows you the wrong way to create an Employee record: Note the error which is enforced by the composition association: (oracle.jbo.InvalidOwnerException) JBO-25030: Detail entity Employees with row key null cannot find or invalidate its owning entity.  Working with composition associations via the SDO web services  Shay Shmeltzer recently recorded a good video which demonstrates how to expose your ADF Business Components through the SDO interface. On exposing the VOs you get a choice of operation to publish including create, update, delete and more: For example through the SDO test interface we can see that the create operation will request the attributes for the VO exposed, in this case EmployeesView1: In this specific case though, just like the ADF BC Tester, an attempt to create this record will fail with JBO-25030, the composition association is still enforced: The correct way to to do this is through the create operation on the DepartmentsView1 which also lets you create employees record in context of the parent, thus satisfying the composition association rule: Yet at issue here is the create operation will always create both the parent Departments and Employees records.  What do we do if we've already previously created the parent Departments records, and we just want to create additional Employees records for that Department?  The create method of the EmployeeView1 as we saw previously doesn't allow us to do that, the JBO-3050 error will be raised. The solution is the "merge" operation on the parent Departments record: In this case for the Departments record you just need to supply the DepartmentId of the Department you want the Employees record to be associated with, as well as the new Employees record.  When invoked only the Employees record is created, and the supply of the DepartmentId of the Departments record satisfies the composition association without actually creating or updating the associated Department record that already exists in the database. Be warned however if you supply any more attributes for the Department record, it will result in a merge (update) of the associated Departments record too. 

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• What word processor can manage left and right pages separately?

  - by chtfn

  I was after a word processor that can manage left and right pages separately so I can have my text on the right pages and my illustrations on the left pages. I know LibeOffice can set "left page" and "right page" formats, but there is no simple way to make the text jump from right page to right page when writing. I don't know what would be the best way to do that, but I guess I need an app that is designed for writing books and do that kind of thing, or an app that can associate a page format with an object format (so the "illustration" format can be exclusively associated with "left page" format, and "text body" exclusively associated with "right page", for example). Or is there an extension for LO or OOo out there that I didn't hear about? Cheers!

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• ORA-7445 Troubleshooting

  - by [email protected]

      QUICKLINK: Note 153788.1 ORA-600/ORA-7445 Lookup tool Note 1082674.1 : A Video To Demonstrate The Usage Of The ORA-600/ORA-7445 Lookup Tool [Video]   Have you observed an ORA-07445 error reported in your alert log? While the ORA-600 error is "captured" as a handled exception in the Oracle source code, the ORA-7445 is an unhandled exception error due to an OS exception which should result in the creation of a core file.  An ORA-7445 is a generic error, and can occur from anywhere in the Oracle code. The precise location of the error is identified by the core file and/or trace file it produces.  Looking for the best way to diagnose? Whenever an ORA-7445 error is raised a core file is generated.  There may be a trace file generated with the error as well.   Prior to 11g, the core files are located in the CORE_DUMP_DEST directory.   Starting with 11g, there is a new advanced fault diagnosability infrastructure to manage trace data.  Diagnostic files are written into a root directory for all diagnostic data called the ADR home.   Core files at 11g will go to the ADR HOME/cdump directory.   For more information on the Oracle 11g Diagnosability feature see Note 453125.1 11g Diagnosability Frequently Asked Questions Note 443529.1 11g Quick Steps to Package and Send Critical Error Diagnostic Information to Support[Video]   NOTE:  While the core file is captured in the Diagnosability infrastructure, the file may not be included with a diagnostic package.1.  Check the Alert LogThe alert log may indicate additional errors or other internal errors at the time of the problem.   In some cases, the ORA-7445 error will occur along with ORA-600, ORA-3113, ORA-4030 errors.  The ORA-7445 error can be side effects of the other problems and you should review the first error and associated core file or trace file and work down the list of errors.   Note 1020463.6 DIAGNOSING ORA-3113 ERRORS Note 1812.1 TECH:  Getting a Stack Trace from a CORE file Note 414966.1 RDA Documentation Index   If the ORA-7445 errors are not associated with other error conditions, ensure the trace data is not truncated. If you see a message at the end of the file   "MAX DUMP FILE SIZE EXCEEDED"   the MAX_DUMP_FILE_SIZE parameter is not setup high enough or to 'unlimited'. There could be vital diagnostic information missing in the file and discovering the root issue may be very difficult.  Set the MAX_DUMP_FILE_SIZE appropriately and regenerate the error for complete trace information. For pointers on deeper analysis of these errors see   Note 390293.1 Introduction to 600/7445 Internal Error Analysis Note 211909.1 Customer Introduction to ORA-7445 Errors 2.  Search 600/7445 Lookup Tool Visit My Oracle Support to access the ORA-00600 Lookup tool (Note 153788.1). The ORA-600/ORA-7445 Lookup tool may lead you to applicable content in My Oracle Support on the problem and can be used to investigate the problem with argument data from the error message or you can pull out key stack pointers from the associated trace file to match up against known bugs.3.  "Fine tune" searches in Knowledge Base As the ORA-7445 error indicates an unhandled exception in the Oracle source code, your search in the Oracle Knowledge Base will need to focus on the stack data from the core file or the trace file. Keep in mind that searches on generic argument data will bring back a large result set.  The more you can learn about the environment and code leading to the errors, the easier it will be to narrow the hit list to match your problem. Note 153788.1 ORA-600/ORA-7445 TroubleshooterNote 1082674.1 A Video To Demonstrate The Usage Of The ORA-600/ORA-7445 Lookup Tool [Video] NOTE:  If no trace file is captured, see Note 1812.1 TECH:  Getting a Stack Trace from a CORE file.  Core files are managed through 11g Diagnosability, but are not packaged with other diagnostic data automatically.  The core files can be quite large, but may be useful during analysis within Oracle Support.4.  If assistance is required from Oracle Should it become necessary to get assistance from Oracle Support on an ORA-7445 problem, please provide at a minimum, the Alert log  Associated tracefile(s) or incident package at 11g Patch level  information Core file(s)  Information about changes in configuration and/or application prior to  issues  If error is reproducible, a self-contained reproducible testcase: Note.232963.1 How to Build a Testcase for Oracle Data Server Support to Reproduce ORA-600 and ORA-7445 Errors RDA report or Oracle Configuration Manager information Oracle Configuration Manager Quick Start Guide Note 548815.1 My Oracle Support Configuration Management FAQ Note 414966.1 RDA Documentation Index ***For reference to the content in this blog, refer to Note.1092832.1 Master Note for Diagnosing ORA-600

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• BizTalk Envelopes explained

  - by Robert Kokuti

  Recently I've been trying to get some order into an ESB-BizTalk pub/sub scenario, and decided to wrap the payload into standardized envelopes. I have used envelopes before in a 'light weight' fashion, and I found that they can be quite useful and powerful if used systematically. Here is what I learned. The Theory In my experience, Envelopes are often underutilised in a BizTalk solution, and quite often their full potential is not well understood. Here I try to simplify the theory behind the Envelopes within BizTalk.   Envelopes can be used to attach additional data to the ‘real’ data (payload). This additional data can contain all routing and processing information, and allows treating the business data as a ‘black box’, possibly compressed and/or encrypted etc. The point here is that the infrastructure does not need to know anything about the business data content, just as a post man does not need to know the letter within the envelope. BizTalk has built-in support for envelopes through the XMLDisassembler and XMLAssembler pipeline components (these are part of the XMLReceive and XMLSend default pipelines). These components, among other things, perform the following: XMLDisassembler Extracts the payload from the envelope into the Message Body Copies data from the envelope into the message context, as specified by the property schema(s) associated by the envelope schema. Typically, once the envelope is through the XMLDisassembler, the payload is submitted into the Messagebox, and the rest of the envelope data are copied into the context of the submitted message. The XMLDisassembler uses the Property Schemas, referenced by the Envelope Schema, to determine the name of the promoted Message Context element.   XMLAssembler Wraps the Message Body inside the specified envelope schema Populates the envelope values from the message context, as specified by the property schema(s) associated by the envelope schema. Notice that there are no requirements to use the receiving envelope schema when sending. The sent message can be wrapped within any suitable envelope, regardless whether the message was originally received within an envelope or not. However, by sharing Property Schemas between Envelopes, it is possible to pass values from the incoming envelope to the outgoing envelope via the Message Context. The Practice Creating the Envelope Add a new Schema to the BizTalk project:   Envelopes are defined as schemas, with the <Schema> Envelope property set to Yes, and the root node’s Body XPath property pointing to the node which contains the payload. Typically, you’d create an envelope structure similar to this: Click on the <Schema> node and set the Envelope property to Yes. Then, click on the Envelope node, and set the Body XPath property pointing to the ‘Body’ node:   The ‘Body’ node is a Child Element, and its Data Structure Type is set to xs:anyType.  This allows the Body node to carry any payload data. The XMLReceive pipeline will submit the data found in the Body node, while the XMLSend pipeline will copy the message into the Body node, before sending to the destination. Promoting Properties Once you defined the envelope, you may want to promote the envelope data (anything other than the Body) as Property Fields, in order to preserve their value in the message context. Anything not promoted will be lost when the XMLDisassembler extracts the payload from the Body. Typically, this means you promote everything in the Header node. Property promotion uses associated Property Schemas. These are special BizTalk schemas which have a flat field structure. Property Schemas define the name of the promoted values in the Message Context, by combining the Property Schema’s Namespace and the individual Field names. It is worth being systematic when it comes to naming your schemas, their namespace and type name. A coherent method will make your life easier when it comes to referencing the schemas during development, and managing subscriptions (filters) in BizTalk Administration. I developed a fairly coherent naming convention which I’ll probably share in another article. Because the property schema must be flat, I recommend creating one for each level in the envelope header hierarchy. Property schemas are very useful in passing data between incoming as outgoing envelopes. As I mentioned earlier, in/out envelopes do not have to be the same, but you can use the same property schema when you promote the outgoing envelope fields as you used for the incoming schema.  As you can reference many property schemas for field promotion, you can pick data from a variety of sources when you define your outgoing envelope. For example, the outgoing envelope can carry some of the incoming envelope’s promoted values, plus some values from the standard BizTalk message context, like the AdapterReceiveCompleteTime property from the BizTalk message-tracking properties. The values you promote for the outgoing envelope will be automatically populated from the Message Context by the XMLAssembler pipeline component. Using the Envelope Receiving Enveloped messages are automatically recognized by the XMLReceive pipeline, or any other custom pipeline which includes the XMLDisassembler component. The Body Path node will become the Message Body, while the rest of the envelope values will be added to the Message context, as defined by the Property Shemas referenced by the Envelope Schema. Sending The Send Port’s filter expression can use the promoted properties from the incoming envelope. If you want to enclose the sent message within an envelope, the Send Port XMLAssembler component must be configured with the fully qualified envelope name:   One way of obtaining the fully qualified envelope name is copy it off from the envelope schema property page: The full envelope schema name is constructed as <Name>, <Assembly> The outgoing envelope is populated by the XMLAssembler pipeline component. The Message Body is copied to the specified envelope’s Body Path node, while the rest of the envelope fields are populated from the Message Context, according to the Property Schemas associated with the Envelope Schema. That’s all for now, happy enveloping!

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• Discovering Assets on Multiple Subnets

  - by Owen Allen

  I saw this question recently, about making discovery work: "I am attempting to discover a group of ILOMs which seem to be on a different subnet than their hosts. When I try to discover the ILOMs, Ops Center can't find them. Is it a requirement that the ILOM and its host should be on the same subnet?" The short answer is no, related assets don't have to be on the same subnet for you to discover them. The correlation between related assets doesn't depend on them being on the same subnet. What's likely going on, if you're running into similar issues, is that the subnet where you're trying to discover systems needs to be associated with a Proxy Controller that can reach it. You can go here to see how to associate a network with a Proxy Controller. Once the network is associated with a Proxy Controller, you should be able to discover and manage assets on it.

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• SOA 11g Technology Adapters – ECID Propagation

  - by Greg Mally

  Overview Many SOA Suite 11g deployments include the use of the technology adapters for various activities including integration with FTP, database, and files to name a few. Although the integrations with these adapters are easy and feature rich, there can be some challenges from the operations perspective. One of these challenges is how to correlate a logical business transaction across SOA component instances. This correlation is typically accomplished via the execution context ID (ECID), but we lose the ECID correlation when the business transaction spans technologies like FTP, database, and files. A new feature has been introduced in the Oracle adapter JCA framework to allow the propagation of the ECID. This feature is available in the forthcoming SOA Suite 11.1.1.7 (PS6). The basic concept of propagating the ECID is to identify somewhere in the payload of the message where the ECID can be stored. Then two Binding Properties, relating to the location of the ECID in the message, are added to either the Exposed Service (left-hand side of composite) or External Reference (right-hand side of composite). This will give the JCA framework enough information to either extract the ECID from or add the ECID to the message. In the scenario of extracting the ECID from the message, the ECID will be used for the new component instance. Where to Put the ECID When trying to determine where to store the ECID in the message, you basically have two options: Add a new optional element to your message schema. Leverage an existing element that is not used in your schema. The best scenario is that you are able to add the optional element to your message since trying to find an unused element will prove difficult in most situations. The schema will be holding the ECID value which looks something like the following: 11d1def534ea1be0:7ae4cac3:13b4455735c:-8000-00000000000002dc Configuring Composite Services/References Now that you have identified where you want the ECID to be stored in the message, the JCA framework needs to have this information as well. The two pieces of information that the framework needs relates to the message schema: The namespace for the element in the message. The XPath to the element in the message. To better understand this, let's look at an example for the following database table: When an Exposed Service is created via the Database Adapter Wizard in the composite, the following schema is created: For this example, the two Binding Properties we add to the ReadRow service in the composite are: <!-- Properties for the binding to propagate the ECID from the database table --> <property name="jca.ecid.nslist" type="xs:string" many="false">  xmlns:ns1="http://xmlns.oracle.com/pcbpel/adapter/db/top/ReadRow"</property> <property name="jca.ecid.xpath" type="xs:string" many="false">  /ns1:EcidPropagationCollection/ns1:EcidPropagation/ns1:ecid</property> Notice that the property called jca.ecid.nslist contains the targetNamespace defined in the schema and the property called jca.ecid.xpath contains the XPath statement to the element. The XPath statement also contains the appropriate namespace prefix (ns1) which is defined in the jca.ecid.nslist property. When the Database Adapter service reads a row from the database, it will retrieve the ECID value from the payload and remove the element from the payload. When the component instance is created, it will be associated with the retrieved ECID and the payload contains everything except the ECID element/value. The only time the ECID is visible is when it is stored safely in the resource technology like the database, a file, or a queue. Simple Database/File/JMS Example This section contains a simplified example of how the ECID can propagate through a database table, a file, and JMS queue. The composite for the example looks like the following: The flow of this example is as follows: Invoke database insert using the insertwithecidbpelprocess_client_ep Service. The InsertWithECIDBPELProcess adds a row to the database via the Database Adapter. The JCA Framework adds the ECID to the message prior to inserting. The ReadRow Service retrieves the record and the JCA Framework extracts the ECID from the message. The ECID element is removed from the message. An instance of ReadRowBPELProcess is created and it is associated with the retried ECID. The ReadRowBPELProcess now writes the record to the file system via the File Adapter. The JCA Framework adds the ECID to the message prior to writing the message to file. The ReadFile Service retrieves the record from the file system and the JCA Framework extracts the ECID from the message. The ECID element is removed from the message. An instance of ReadFileBPELProcess is created and it is associated with the retried ECID. The ReadFileBPELProcess now enqueues the message via the JMS Adapter. The JCA Framework adds the ECID to the message prior to enqueuing the message. The DequeueMessage Service retrieves the record and the JCA Framework extracts the ECID from the message. The ECID element is removed from the message. An instance of DequeueMessageBPELProcess is created and it is associated with the retried ECID. The logical flow ends. When viewing the Flow Trace in the Enterprise Manger, you will now see all the instances correlated via ECID: Please check back here when SOA Suite 11.1.1.7 is released for this example. With the example you can run it yourself and reinforce what has been shared in this blog via a hands-on experience. One final note: the contents of this blog may be included in the official SOA Suite 11.1.1.7 documentation, but you will still need to come here to get the example.

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• How to move MOSS 2007 to another SharePoint Farm

  - by DipeshBhanani

  It was time of my first onsite client assignment on SharePoint. Client had one server production environment. They wanted to upgrade the topology with completely new SharePoint Farm of three servers. So, the task was to move whole MOSS 2007 stuff to the new server environment without impacting data. The last three words “… without impacting data…” were actually putting pressure on my head. Moreover SSP was required to move because additional information has been added for users apart from AD import.   I thought I had to do only backup and restore. It appeared pretty easy at first thought. Just because of these three damn scary words, I thought to check out on internet for guidance related to this scenario. I couldn’t get anything except general guidance of moving server on Microsoft TechNet site. I promised myself for starting blogs with this post if I would be successful in this task. Well, I took long time to write this but finally made it. I hope it will be useful to all guys looking for SharePoint server movement.   Before beginning restoration, make sure that, there is no difference in versions of SharePoint at source and destination server. Also check whether the state of SharePoint Installation at the time of backup and restore is same or not. (E.g. SharePoint related service packs and patches if any)   The main tasks of the server movement are as follow:   1.        Backup all the databases 2.        Install and configure SharePoint on new environment 3.        Deploy all solutions (WSP Files) globally to destination server- for installing features attached to the solutions 4.        Install all the custom features 5.        Deploy/Copy custom pages/files which are added to the “12Hive” folder later 6.        Restore SSP 7.        Restore My Site 8.        Restore other web application   Tasks 3 to 5 are for making sure that we have configured the environment well enough for the web application to be restored successfully. The main and complex task was restoring SSP. I have started restoring SSP through Central Admin. After a while, the restoration status was updated to “unsuccessful”. “Damn it, what went wrong?” I thought looking at the error detail down the page. I couldn’t remember the error message but I had corrected and restored it again.   Actually once you fail restoring SSP, until and unless you don’t clean all related stuff well, your restoration will be failed again and again. I wanted to find the actual reason. So cleaned, restored, cleaned, restored… I had tried almost 5-6 times and finally, I succeeded. I had realized how pleasant it is, to see the word “Successful” on the screen. Without wasting your much time to read, let me write all the detailed steps of restoring SSP:   1.        Delete the SSP through following STSADM command. stsadm -o deletessp -title <SSP name> -deletedatabases -force e.g.: stsadm -o deletessp -title SharedServices1 -deletedatabases –force 2.        Check and delete the web application associated with SSP if it exists. 3.        Remove Link from Check and remove “Alternate Access Mapping” associated with SSP if it exists. 4.        Check and delete IIS site as well as application pool associated with SSP if it exists. 5.        Stop following services: ·         Office SharePoint Server Search ·         Windows SharePoint Services Search ·         Windows SharePoint Services Help Search   6.        Delete all the databases associated/related to SSP from SQL Server. 7.        Reset IIS. 8.        Start again following services: ·         Office SharePoint Server Search ·         Windows SharePoint Services Search ·         Windows SharePoint Services Help Search   9.        Restore the new SSP.   After the SSP restoration, all other stuffs had completed very smoothly without any more issues. I did few modifications to sites for change of server name and finally, the new environment was ready.

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• What's going on with my wireless?

  - by Mark Scott

  The WiFi on my Acer laptop (it's a 3810TZ, with Intel Corporation Centrino Wireless-N 1000) works flawlessly on Ubuntu 11.04. On 11.10, it's continually up and down, and it fills the system log with messages such as those below. What is going on? It seems to be unable to decide which regulatory domain it's in. Despite the system configuration being quite clearly set to UK it persists in configuring itself as though it was opeating in Taiwan! Nov 22 15:34:37 MES3810 wpa_supplicant[1053]: WPA: 4-Way Handshake failed - pre-shared key may be incorrect Nov 22 15:34:37 MES3810 wpa_supplicant[1053]: CTRL-EVENT-DISCONNECTED bssid=00:50:7f:72:bf:b0 reason=15 Nov 22 15:34:37 MES3810 wpa_supplicant[1053]: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=3 Nov 22 15:34:37 MES3810 kernel: [18239.240355] cfg80211: All devices are disconnected, going to restore regulatory settings Nov 22 15:34:37 MES3810 kernel: [18239.240362] cfg80211: Restoring regulatory settings Nov 22 15:34:37 MES3810 kernel: [18239.240368] cfg80211: Calling CRDA to update world regulatory domain Nov 22 15:34:37 MES3810 kernel: [18239.240408] wlan0: deauthenticating from 00:50:7f:72:bf:b0 by local choice (reason=3) Nov 22 15:34:37 MES3810 NetworkManager[875]: (wlan0): supplicant interface state: 4-way handshake - disconnected Nov 22 15:34:37 MES3810 kernel: [18239.246556] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain Nov 22 15:34:37 MES3810 kernel: [18239.246563] cfg80211: World regulatory domain updated: Nov 22 15:34:37 MES3810 kernel: [18239.246567] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Nov 22 15:34:37 MES3810 kernel: [18239.246572] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.246577] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.246582] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.246587] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.246592] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Nov 22 15:34:37 MES3810 NetworkManager[875]: (wlan0): supplicant interface state: disconnected - scanning Nov 22 15:34:37 MES3810 wpa_supplicant[1053]: Trying to authenticate with 00:50:7f:72:bf:b0 (SSID='PoplarHouse' freq=2412 MHz) Nov 22 15:34:37 MES3810 NetworkManager[875]: (wlan0): supplicant interface state: scanning - authenticating Nov 22 15:34:37 MES3810 kernel: [18239.509877] wlan0: authenticate with 00:50:7f:72:bf:b0 (try 1) Nov 22 15:34:37 MES3810 wpa_supplicant[1053]: Trying to associate with 00:50:7f:72:bf:b0 (SSID='PoplarHouse' freq=2412 MHz) Nov 22 15:34:37 MES3810 kernel: [18239.512276] wlan0: authenticated Nov 22 15:34:37 MES3810 kernel: [18239.512615] wlan0: associate with 00:50:7f:72:bf:b0 (try 1) Nov 22 15:34:37 MES3810 NetworkManager[875]: (wlan0): supplicant interface state: authenticating - associating Nov 22 15:34:37 MES3810 kernel: [18239.516508] wlan0: RX ReassocResp from 00:50:7f:72:bf:b0 (capab=0x431 status=0 aid=1) Nov 22 15:34:37 MES3810 kernel: [18239.516514] wlan0: associated Nov 22 15:34:37 MES3810 wpa_supplicant[1053]: Associated with 00:50:7f:72:bf:b0 Nov 22 15:34:37 MES3810 kernel: [18239.529097] cfg80211: Calling CRDA for country: TW Nov 22 15:34:37 MES3810 NetworkManager[875]: (wlan0): supplicant interface state: associating - associated Nov 22 15:34:37 MES3810 kernel: [18239.535680] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535688] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535692] cfg80211: Updating information on frequency 2417 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535697] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535702] cfg80211: Updating information on frequency 2422 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535707] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535711] cfg80211: Updating information on frequency 2427 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535716] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535720] cfg80211: Updating information on frequency 2432 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535725] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535730] cfg80211: Updating information on frequency 2437 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535735] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535739] cfg80211: Updating information on frequency 2442 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535744] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535748] cfg80211: Updating information on frequency 2447 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535753] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535757] cfg80211: Updating information on frequency 2452 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535763] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535767] cfg80211: Updating information on frequency 2457 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535772] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535777] cfg80211: Updating information on frequency 2462 MHz for a 20 MHz width channel with regulatory rule: Nov 22 15:34:37 MES3810 kernel: [18239.535782] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535786] cfg80211: Disabling freq 2467 MHz Nov 22 15:34:37 MES3810 kernel: [18239.535789] cfg80211: Disabling freq 2472 MHz Nov 22 15:34:37 MES3810 kernel: [18239.535794] cfg80211: Regulatory domain changed to country: TW Nov 22 15:34:37 MES3810 kernel: [18239.535797] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Nov 22 15:34:37 MES3810 kernel: [18239.535802] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535807] cfg80211: (5270000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 1700 mBm) Nov 22 15:34:37 MES3810 kernel: [18239.535812] cfg80211: (5735000 KHz - 5815000 KHz @ 40000 KHz), (300 mBi, 3000 mBm) Nov 22 15:34:38 MES3810 NetworkManager[875]: (wlan0): supplicant interface state: associated - 4-way handshake Any ideas?

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• Parallel Classloading Revisited: Fully Concurrent Loading

  - by davidholmes

  Java 7 introduced support for parallel classloading. A description of that project and its goals can be found here: http://openjdk.java.net/groups/core-libs/ClassLoaderProposal.html The solution for parallel classloading was to add to each class loader a ConcurrentHashMap, referenced through a new field, parallelLockMap. This contains a mapping from class names to Objects to use as a classloading lock for that class name. This was then used in the following way: protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException { synchronized (getClassLoadingLock(name)) { // First, check if the class has already been loaded Class c = findLoadedClass(name); if (c == null) { long t0 = System.nanoTime(); try { if (parent != null) { c = parent.loadClass(name, false); } else { c = findBootstrapClassOrNull(name); } } catch (ClassNotFoundException e) { // ClassNotFoundException thrown if class not found // from the non-null parent class loader } if (c == null) { // If still not found, then invoke findClass in order // to find the class. long t1 = System.nanoTime(); c = findClass(name); // this is the defining class loader; record the stats sun.misc.PerfCounter.getParentDelegationTime().addTime(t1 - t0); sun.misc.PerfCounter.getFindClassTime().addElapsedTimeFrom(t1); sun.misc.PerfCounter.getFindClasses().increment(); } } if (resolve) { resolveClass(c); } return c; } } Where getClassLoadingLock simply does: protected Object getClassLoadingLock(String className) { Object lock = this; if (parallelLockMap != null) { Object newLock = new Object(); lock = parallelLockMap.putIfAbsent(className, newLock); if (lock == null) { lock = newLock; } } return lock; } This approach is very inefficient in terms of the space used per map and the number of maps. First, there is a map per-classloader. As per the code above under normal delegation the current classloader creates and acquires a lock for the given class, checks if it is already loaded, then asks its parent to load it; the parent in turn creates another lock in its own map, checks if the class is already loaded and then delegates to its parent and so on till the boot loader is invoked for which there is no map and no lock. So even in the simplest of applications, you will have two maps (in the system and extensions loaders) for every class that has to be loaded transitively from the application's main class. If you knew before hand which loader would actually load the class the locking would only need to be performed in that loader. As it stands the locking is completely unnecessary for all classes loaded by the boot loader. Secondly, once loading has completed and findClass will return the class, the lock and the map entry is completely unnecessary. But as it stands, the lock objects and their associated entries are never removed from the map. It is worth understanding exactly what the locking is intended to achieve, as this will help us understand potential remedies to the above inefficiencies. Given this is the support for parallel classloading, the class loader itself is unlikely to need to guard against concurrent load attempts - and if that were not the case it is likely that the classloader would need a different means to protect itself rather than a lock per class. Ultimately when a class file is located and the class has to be loaded, defineClass is called which calls into the VM - the VM does not require any locking at the Java level and uses its own mutexes for guarding its internal data structures (such as the system dictionary). The classloader locking is primarily needed to address the following situation: if two threads attempt to load the same class, one will initiate the request through the appropriate loader and eventually cause defineClass to be invoked. Meanwhile the second attempt will block trying to acquire the lock. Once the class is loaded the first thread will release the lock, allowing the second to acquire it. The second thread then sees that the class has now been loaded and will return that class. Neither thread can tell which did the loading and they both continue successfully. Consider if no lock was acquired in the classloader. Both threads will eventually locate the file for the class, read in the bytecodes and call defineClass to actually load the class. In this case the first to call defineClass will succeed, while the second will encounter an exception due to an attempted redefinition of an existing class. It is solely for this error condition that the lock has to be used. (Note that parallel capable classloaders should not need to be doing old deadlock-avoidance tricks like doing a wait() on the lock object\!). There are a number of obvious things we can try to solve this problem and they basically take three forms: Remove the need for locking. This might be achieved by having a new version of defineClass which acts like defineClassIfNotPresent - simply returning an existing Class rather than triggering an exception. Increase the coarseness of locking to reduce the number of lock objects and/or maps. For example, using a single shared lockMap instead of a per-loader lockMap. Reduce the lifetime of lock objects so that entries are removed from the map when no longer needed (eg remove after loading, use weak references to the lock objects and cleanup the map periodically). There are pros and cons to each of these approaches. Unfortunately a significant "con" is that the API introduced in Java 7 to support parallel classloading has essentially mandated that these locks do in fact exist, and they are accessible to the application code (indirectly through the classloader if it exposes them - which a custom loader might do - and regardless they are accessible to custom classloaders). So while we can reason that we could do parallel classloading with no locking, we can not implement this without breaking the specification for parallel classloading that was put in place for Java 7. Similarly we might reason that we can remove a mapping (and the lock object) because the class is already loaded, but this would again violate the specification because it can be reasoned that the following assertion should hold true: Object lock1 = loader.getClassLoadingLock(name); loader.loadClass(name); Object lock2 = loader.getClassLoadingLock(name); assert lock1 == lock2; Without modifying the specification, or at least doing some creative wordsmithing on it, options 1 and 3 are precluded. Even then there are caveats, for example if findLoadedClass is not atomic with respect to defineClass, then you can have concurrent calls to findLoadedClass from different threads and that could be expensive (this is also an argument against moving findLoadedClass outside the locked region - it may speed up the common case where the class is already loaded, but the cost of re-executing after acquiring the lock could be prohibitive. Even option 2 might need some wordsmithing on the specification because the specification for getClassLoadingLock states "returns a dedicated object associated with the specified class name". The question is, what does "dedicated" mean here? Does it mean unique in the sense that the returned object is only associated with the given class in the current loader? Or can the object actually guard loading of multiple classes, possibly across different class loaders? So it seems that changing the specification will be inevitable if we wish to do something here. In which case lets go for something that more cleanly defines what we want to be doing: fully concurrent class-loading. Note: defineClassIfNotPresent is already implemented in the VM as find_or_define_class. It is only used if the AllowParallelDefineClass flag is set. This gives us an easy hook into existing VM mechanics. Proposal: Fully Concurrent ClassLoaders The proposal is that we expand on the notion of a parallel capable class loader and define a "fully concurrent parallel capable class loader" or fully concurrent loader, for short. A fully concurrent loader uses no synchronization in loadClass and the VM uses the "parallel define class" mechanism. For a fully concurrent loader getClassLoadingLock() can return null (or perhaps not - it doesn't matter as we won't use the result anyway). At present we have not made any changes to this method. All the parallel capable JDK classloaders become fully concurrent loaders. This doesn't require any code re-design as none of the mechanisms implemented rely on the per-name locking provided by the parallelLockMap. This seems to give us a path to remove all locking at the Java level during classloading, while retaining full compatibility with Java 7 parallel capable loaders. Fully concurrent loaders will still encounter the performance penalty associated with concurrent attempts to find and prepare a class's bytecode for definition by the VM. What this penalty is depends on the number of concurrent load attempts possible (a function of the number of threads and the application logic, and dependent on the number of processors), and the costs associated with finding and preparing the bytecodes. This obviously has to be measured across a range of applications. Preliminary webrevs: http://cr.openjdk.java.net/~dholmes/concurrent-loaders/webrev.hotspot/ http://cr.openjdk.java.net/~dholmes/concurrent-loaders/webrev.jdk/ Please direct all comments to the mailing list [email protected].

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• Unable to use TL-WN821N

  - by udiw

  Hi, I got a TP-LINK USB wireless module - TL-WN821N, using Ubuntu 10.4 (same problems were also seen in 10.10). From everything I've read online, the usb should work just fine, since the Atheros ar9170 is built into the kernel. However, when I plug it in, it is detected as a USB device, but there is no wlan associated with it, and basically - nothing happens. Am I doing something wrong? what should I do so that the Atheros driver is associated with this device? btw, on Windows it works fine (with the drivers). Some logs: $ uname -mr 2.6.32-28-generic i686 $ lsb_release -d Description: Ubuntu 10.04.2 LTS $ lsusb ... (trimmed) Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 017: ID 0cf3:7015 Atheros Communications, Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub $ lsmod |grep ar9 ar9170usb 51296 0 ath 7611 1 ar9170usb mac80211 205402 3 ar9170usb,iwl3945,iwlcore cfg80211 126528 5 ar9170usb,ath,iwl3945,iwlcore,mac80211 led_class 2864 4 ar9170usb,iwl3945,iwlcore,sdhci

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