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  • Microsoft Discontinuing Windows Home Server

    - by Jason Fitzpatrick
    As part of their ongoing push to simplify their product lineups, Microsoft is discontinuing their popular small office/home server platform Windows Home Server. On to see the new alternative for small volume users. Although, in the context of the simplification push, it shouldn’t seem surprising, many people were in fact surprised by Microsoft’s move to drop the extremely popular and economical WHS platform. Now, instead of dropping $99 on a copy of WHS to build their simple home servers users will find themselves on the first tier of the new Windows Server 2012 pricing ladder: a copy of Essentials for $425. There is one version below Essentials, Foundation, but it’s currently OEM only. Hit up the link below to see the new features and pricing structure of Windows Server 2012. Windows Server 2012 [via RedmondPie] How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8 How to Banish Duplicate Photos with VisiPic

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  • full screen flash problems

    - by richzilla
    when i play flash videos from sites such as youtube, the videos initially play ok. However when the videos are full screened, a number of problems arise. Usually when the full screen button is first clicked, the video will take up the full screen, but will be frozen (however the video audio can still be heard). It can take several attempts to get the video to play in full screen. The video is also frozen if something triggers osd-notify (changing the volume, getting a new email etc.). Any ideas what might be going wrong?

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  • Oracle Solaris 11.1 Blog Post Roundup

    - by Larry Wake
    Here are a few recent posts about the also-recent Oracle Solaris 11.1 release: Title Author What's New in Solaris 11.1? Karoly Vegh New ZFS Encryption features in Solaris 11.1 Darren Moffat Solaris 11.1: Encrypted Immutable Zones on (ZFS) Shared Storage Darren Moffat High Resolution Timeouts Steve Sistare Solaris 11.1: Changes to included FOSS packages Alan Coopersmith Documentation Changes in Solaris 11.1 Alan Coopersmith How to Update to Oracle Solaris 11.1 Usingthe Image Packaging System Peter Dennis svcbundle for easier SMF manifest creation Glynn Foster Controlling server configurations with IPS Bart Smallders You can also see Markus Weber's list of interesting posts about Oracle Solaris 11 from last year, or take a look at my shortcut on how to search for Solaris posts by tag. If that's not enough, don't forget to register for next Wednesday's Oracle Solaris 11.1 and Oracle Solaris Cluster 4.1 webcast with a live Q&A. It's November 7th, at 8 AM PT. The last time we did this, we got almost 300 questions, so for Wednesday, we're making sure we've got lots of engineers with fingers poised over their keyboards, ready for action.

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  • RDA Health Checks for SOA

    - by ShawnBailey
    What is a health check in RDA? A health check evaluates something in your environment to determine whether a change needs to be considered in order to avoid a problem or optimize fuctionality. Examples of what this 'something' might be are: Configuration Parameters JVM Options Runtime Statistics What have we done for SOA? In the latest release of RDA, 4.30, we have added a Rule Set for SOA called 'Oracle SOA 11g (11.1.1) Post Installation (Generic)'. This Rule Set contains 14 SOA related health checks. These checks were all derived from common issues / solutions we see in support of the SOA product. Many of the recommendations come from the product documentation while others are covered in the SOA Knowledge Base. Our goal is that you will be able to easily identify the areas of concern and understand the guidance available from the output of the Rule Set. Running the health checks for SOA The rules that the checks use are installed with RDA and bundled by product or functional area into what are called 'Rule Sets'. To view the available Rule Sets simply run the command from the RDA home location: rda.cmd (or .sh) -dT hcve This will bring up a list of the available HCVE (Health Check / Verification Engine) Rule Sets. Each Rule Set contains a group of related rules that are used for evalutation and display of results. A rule can be considered synonymous with a single health check and they are assigned an ID, Name and Description that can be seen when they are executed. The Rule Set for SOA is option number 11 and you just enter this selection at the prompt. The Rule Set will then execute to completion. After running an HCVE Rule Set the tool will write the output to the RDA_HOME/output folder. The simplest way to view the output is to drag the .htm file to a browser but of course it can also be uploaded to a Service Request for evaluation by Oracle Support. Many of the Rule Sets will prompt you for information before they can execute their rules but the SOA Rule Set will identify the SOA domains configured in your RDA setup.cfg file. This means that you don't need to answer all of the questions again about where stuff is but it also means that you must have configured RDA for SOA. To run the Rule Set: Download the latest version of RDA from MOS Doc ID 314422.1 Configure RDA for your SOA domains. Detailed steps can be found here In it's simplest form the command is 'rda.cmd (.sh) -S SOA' Go to the RDA home location and enter the command 'rda.cmd (or .sh) -dT hcve' Select option '11' It should be noted that this our first release of a SOA Rule Set so there will probably be some things we need to clean up or fix. None of these rules will actually modify anything on your system as they are read only and do the evaluations internally. Please let us know if you have any issues with the rules or ideas for new ones so we can make them as useful as possible. The Checks Here is a list of the SOA health checks by ID, Name and Description. ID Name Description A00100 SOA Domain Homes Lists the SOA domains that were indentified from the RDA setup.cfg file A00200 Coherence Protocol Conflict Checks to see if you have both Unicast and Multicast configured in the same domain. Checks both the setDomainEnv and config.xml entries (if it exists). We recommend Unicast with fully qualified host names or IP addresses. A00210 Coherence Fully Qualified Host Checks that the host names are fully qualified or that IP addresses are used. Will fail if unqualified host names are detected. A00220 Unicast Local Host Checks that the Coherence localhost is specified for use with Unicast A00300 JTA Timeout Checks that the JTA timeout is configured for the domain and lists the value. The bundled rule will only list the current values of the JTA timeout for each SOA Domain. In the future the rule with fail with a warning if the value is 300 seconds or lower. It is recommended that timeouts follow the pattern 'syncMaxWaitTime' < EJB Timeouts < JTA Timeout. The 300 second value is important because the EJB Timeouts default to 300 seconds. Additional information can be found in MOS Doc ID 880313.1. A00310 XA Max Time Checks that the JTA Maximum XA call time is set for the domain. Fails if it is not explicitly set or if the value is less than or equal to the default of 12000 ms. A00320 XA Timeout Checks that the XA timeout is enabled and that the value is '0' for the SOA Data Source (SOADataSource-jdbc.xml) A00330 JDBC Statement Timeout Checks that the Statement Timeout is set for all SOA Data Sources. Fails if the value is not set or if it is set to the default of -1. A00400 XA Driver Checks that the SOA Data Source is configured to use an XA driver. Fails if it is not. A00410 JDBC Capacity Settings Checks that the minimum and maximum capacity are equal for all SOA Data Sources. Fails if they are not and lists specifically which data sources failed. A00500 SOA Roles Checks that the default SOA roles 'SOAAdmin' and 'SOAOperator' are configured for the soa-infra application in the file sytem-jazn-data.xml. Fails if they are not. A00700 SOA-INFRA Deployment Checks that the soa-infra application is deployed to either a cluster, all members of a cluster or a stand alone server. A00710 SOA Deployments Checks that the SOA related applications are deployed to the same domain members as soa-infra. A00720 SOA Library Deployments Checks that the SOA related libraries are deployed to the same domain members as soa-infra. A00730 Data Source Deployments Checks that the SOA Data Sources are all targeted to the same domain members as soa-infra

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  • Free Universal Construction Kit Links Different Construction Toy Systems

    - by Jason Fitzpatrick
    If you or a young tinker in your household is disappointed that there is no way to link LEGO bricks and Lincoln Logs (or other construction toys on the market) this project is for you. Free Universal Construction Kit is project oriented around creating inter-operable linking bricks that allow the user to link previously non-compatible building system. Using the bricks you can, for example, attach LEGO bricks to a K’Nex construction. The adapter bricks are all available as free 3D printer models–download them, fire up your 3D printer, and start mish-mashing your construction sets. Free Universal Construction Kits [via Make] The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos

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  • SharePointBeginners: A new group for a global noob community

    - by PeterBrunone
    Recently, a discussion broke out (go figure) on a SharePoint list that I frequent.  It had grown in size to the point where the more advanced members were sometimes turned off by the volume of questions that appeared TOO simple.  This happens all the time, as something becomes larger and specialization is necessary.Anyhoo, my response was to create the SharePoint Beginners group.  Come out and join us at http://groups.google.com/group/sharepointbeginners , where no question is too simple; all we ask is to show us that you tried to find the answer.

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  • How can we distribute a client app to other non-US businesses?

    - by Simon
    I'm working on an app which acts as a client for our web service. We sell this service to businesses, and we want to distribute the app to their employees for free. The app will be customised for each client. If we were in the US, my understanding is that we'd ask them to enrol in the volume purchasing program, and submit a version of our app for each business, for enterprise distribution at the free price point However, the businesses aren't all in the US, so they can't enrol in the VPP. They have thousands of employees, so promo codes won't be sufficient. What are our alternatives?

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  • Post Deploy MAAS cleanup

    - by David Buttrick
    I have a mostly working MAAS cluster. I'm still learning juju, but while I'm doing that, I wanted to take this opportunity to do some clean-up tasks. Here are my goals: Configure ntp on the nodes. Set the video mode on the nodes. Set the timezone on the nodes. Are these juju tasks? Or is this better attacked by mounting the disk image on the MAAS host, and doing the configuration there? If I do it that way, how do I get the nodes to recognize that they have to re-install the image to pickup my changes? Thank you. David

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  • Resources for understanding iOS architecture [closed]

    - by BlackJack
    I recently finished reading Randall Hyde's excellent book Write Great Code: Volume 1: Understanding the Machine, and I have a much better knowledge of what's going on under the hood now. I want to start making iPhone apps, and there are lots of guides for that. Embracing my inner Hyde, however, I want to first learn about the iOS system architecture. Apple has a really good overview here: iOS Technology Overview Before I start, I wanted to know if there were any other good resources for understanding iOS architecture and using that knowledge for iPhone programming. Thanks.

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  • Why the Enter key in a Mac keyboard is mapped to Level?

    - by Anentropic
    Just installing Ubuntu for the first time, glad to ditch Win 7. I have a KVM switch and also a Mac, hence I'm using a Mac keyboard (the full size alu one) Everything's pretty cool. First thing I wondered is why the numeric keypad doesn't work? Oh, I have to find the num lock key (which should default to on, sensibly, no?) which isn't labelled as such on a Mac keyboard. Ok no problem. Then for some reason the Enter key on the keypad doesn't work still. Check the keyboard layout (set to 'English UK Macintosh')... inspecting the layout the Enter key is mapped to something called 'Level' - WTF is 'Level'? Everything else about the keyboard works great ie the £ $ # @ " are all perfect, volume control works as expected... why this weird key mapping on the Enter key? More importantly... how do I change it to work as an Enter key ?

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  • Sharing configuration settings between Windows Azure roles

    - by theo.spears
    If you are working on a medium-large Windows Azure project it's likely it will involve more than one role, for example separate web and worker roles. Unfortunately although all the windows azure configuration settings are stored in a single cscfg file, there is no way to share configuration settings between multiple roles. This means you have to duplicate common settings like connection strings across all your roles. There is an open Connect issue about this topic, but Microsoft have not said when they will fix it. In the mean time I've put together a dirty dirty hack cunning workaround that creates a fake role containing your shared configuration settings, and copies it to all roles as part of the build process. Here's how you set it up: 1. Download the zip file attached to this post, and unzip it into the folder containing your Azure project (not your solution folder). 2. Edit your csdef and cscfg files to include the placeholder project ServiceDefinition.csdef<?xml version="1.0" encoding="utf-8"?> <ServiceDefinition name="AzureSpendNotifier" http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceDefinition%22"http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceDefinition"> <WorkerRole name="GLOBAL"> <ConfigurationSettings> <Setting name="ExampleSetting" /> </ConfigurationSettings> </WorkerRole> <WorkerRole name="MyWorker"> <ConfigurationSettings> </ConfigurationSettings> </WorkerRole> <WebRole name="MyWeb"> <Sites> <Site name="Web"> <Bindings> <Binding name="WebEndpoint" endpointName="WebEndpoint" /> </Bindings> </Site> </Sites> <ConfigurationSettings> </ConfigurationSettings> </WebRole> </ServiceDefinition> ServiceConfiguration.cscfg<?xml version="1.0" encoding="utf-8"?> <ServiceConfiguration serviceName="AzureSpendNotifier" xmlns=http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration osFamily="1" osVersion="*"> <Role name="GLOBAL"> <ConfigurationSettings> <Setting name="ExampleSetting" value="Hello World" /> </ConfigurationSettings> <Instances count="1" /> </Role> <Role name="MyWorker"> <Instances count="1" /> <ConfigurationSettings> </ConfigurationSettings> </Role> <Role name="MyWeb"> <Instances count="1" /> <ConfigurationSettings> </ConfigurationSettings> </Role> </ServiceConfiguration> It is important that all your roles contain a ConfigurationSettings entry in both cscfg and csdef files, even if it's empty- otherwise the shared configuration settings will not be inserted. 3. Open your azure deployment (.ccproj) project in notepad, and add the highlighted line below: ... <Import Project="$(CloudExtensionsDir)Microsoft.CloudService.targets" /> <Import Project="globalsettings/globalsettings.targets" /> </Project> It is important you add this below the Microsoft.CloudService.targets import line, as it replaces some of the rules defined in that file. Visual studio will prompt you to reload the project, say yes. At this point you will have a new Azure role called 'GLOBAL' with settings you can edit through the visual studio properties panel as normal. This role will never be deployed, but any settings you add to it will be copied to all your other roles when deployed or tested locally within visual studio.

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  • {solved}stream TV audio through mic input?

    - by Drew S
    I have a gaming headset and use it with a few devices and am looking for a way to stream my audio through my pc from tv through the mic jack and then through the optical out. the system is detecting sound from the mic port. I would put this directly through the headset but that port is being used by my ps3. So I would like a way as I said to stream it through my pc to my headset, and it be great to have an integrated volume option in the sound drop down too. [TV - mic - Ubuntu - headset(optical out)] Ubuntu 13.04 EDIT I found part of a solution. Solution by installing pavucontrol and using "pactl load-module module-loopback latency_msec=1" I can stream the audio through my pc.

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  • Architecture of interaction modes ("paint tools") for a 3D paint program

    - by Bernhard Kausler
    We are developing a Qt-based application to navigate through and paint on a volume treated as a 3D pixel graphic. The layout of the app consists of three orthogonal slice views on which the user may paint stuff like dots, circles etc. and also erase already painted pixels. Think of a 3D Gimp or MS Paint. How would you design the the architecture for the different interaction modes (i.e. paint tools)? My idea is: use the MVC pattern have a separate controler for every interaction mode install an event filter on all three slice views to collect all incoming user interaction events (mouse, keyboard) redirect the events to the currently active interaction controler I would appreciate critical comments on that idea.

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  • Build-time dependency resolving coming to Entity Framework. Now, how about those BI tools too?

    - by jamiet
    Three months ago I wrote a blog post entitled Some thoughts on Visual Studio database references and how they should be used for SQL Server BI where I shared some thoughts on a feature available to database developers in Visual Studio 2010 that I would love to see added to SQL Server Integration Services (SSIS), Analysis Services (SSAS) and Reporting Services (SSRS). In there I said: Over the past few weeks I have been making heavy use of the Database tools in Visual Studio 2010 and one of the features that has most impressed me has been database references.   Database references allow you to have stored procedures in your database project that refer to objects (tables, views, stored procedures etc…) that exist in other database projects and hence when you build your database project it is able to resolve those references.   It occurred to me that similar functionality would be incredibly useful for SQL Server Integration Services(SSIS), Analysis Services (SSAS) & Reporting Services (SSRS) projects. After all reports, packages and data source views are rife with references to database objects – why shouldn’t we be able to have design-time dependency checking in our BI projects the same way that database and .Net developers do? In that blog post I shared links to three Connect submissions where I requested this feature be added to SSIS, SSAS & SSRS. In addition I also submitted a request that the feature be extended to .Net projects so that any reference to a database object in a .Net assembly can be resolved at build time. That Connect submission is at [Entity FX] Use database references to constrain the EDM and overnight it received this comment from Microsoft: We have been working on this feature for a while and and will be available soon This is really good news - it improves the Microsoft developer ecosystem by ensuring invalid references to database references get caught at build time (ideally as part of a Continuous integration build) rather than run time. [Hopefully it might nip this code-first nonsense in the bud too (Ooo...way to incite flame comments :) ) ]. If you want to see this feature in action then check out a video from Teched Europe last month entitled SQL Server Developer Tools Code-named "Juneau" where it is demo'd by Lance Delano and Tim Laverty.   The point of this blog post though is not just to draw attention to this forthcoming feature for .Net developers, it is to ask you to petition Microsoft to get this feature added to SSIS/SSAS/SSRS too. After all, we already know (from the video above) that the feature is coming to this new code-name Juneau development environment plus we also know that Juneau will be the development environment for SSIS/SSAS/SSRS as well - is it really much of a stretch to expect the BI tools to have access to this great feature too? I don't think so and if you agree with me then I urge you to vote and add a comment to the Connection submissions that are requesting this feature. They are at: [SSAS] Declare Object Dependancies [SSRS] Declare Object Dependancies [SSIS] Declare Object Dependancies (Update, Apparently someone at Microsoft has deemed it necassary to set this to private and I am not able to change it back even though I submitted it. You can still vote on the other two though.) Let's close that SQL Developer Gap!   @Jamiet    

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  • Do MORE with WebCenter - Webcast Overview & TIES Tour

    - by Michael Snow
    Today's post is from Michelle Huff, Senior Director, Product Management, Oracle WebCenter `````````````````  In case you missed it, I presented on a webcast yesterday focused on how you can “Do More with Oracle WebCenter – Expand Beyond Content Management.” As you may remember, we rebranded Oracle’s Enterprise Content Management (ECM) Suite, which some people knew by the wonderfully techie three-letter acronyms -- UCM, URM & IPM -- to Oracle WebCenter Content last year. Since it’s a unified ECM platform, I’ve seen many customers over the years continue to expand the number of content-centric solutions and application integrations powered by WebCenter throughout their organizations. But, did you know WebCenter also provides portal, collaboration and web experience management capabilities as well? This enables you to leverage your existing investment in the WebCenter platform as well as the information you’re managing to create engaging sites, collaborative spaces, or self-service portals and composite applications. In the webcast I walked through six different ways that you can do more with WebCenter: Collaborative content contribution and sharing environment Share content across intranets and extranets Combine content in composite applications Create targeted online experiences Manage interactive social experiences Optimize multi-channel customer experiences Joining me on the call was Greg Utecht with TIES. TIES is a joint powers cooperative owned by 46 Minnesota school districts, represents 514 schools – and provides software applications, hardware and software, internet service and professional development designed by educators for education. I was having a lot of fun over the past few days talking with Greg about the TIES implementation and future plans with WebCenter. He joined me on the call for a little Q&A to explain how he’s using WebCenter today for their iContent implementation for document management, records management and archiving. And also covered how they have expanded their implementation to create a collaborative space called their HRPay System with WebCenter to facilitate collaboration and to better engage their users within the school districts. During our conversation a few questions came from the audience about their implementation. They were curious to see how the system looked – so let’s take a peak. This first screenshot shows the screen that a human resources or payroll worker in one of our member districts would see upon logging in, based on their credentials and role in their district. This shows the result of clicking on the SUBSCRIBE link on the main page. It allows the user to subscribe to parts of the portal which will e-mail him/her when those are updated in any way. This shows the screen that a human resources or payroll worker in one of our member districts would see upon clicking on the Resources link. This shows the screen that a human resources or payroll worker in one of our member districts would see upon clicking on the Finance Advisory link. It shows the discussion threads and document sharing areas. This shows the screen that appears when the forum topic on the preceding screen is clicked. This shows the screen portlet up close with shared documents. This shows the screen that appears when a shared document is clicked on. Note that there is also a download button and an update button, meaning people can work on these collaboratively. If you missed the webcast, check it out! You can watch the replay OnDemand HERE. If you attended the webcast, thanks for joining - I hoped you learned a little from the session. I learned that kids are getting digital report cards today! Wow, have times changed with technology. Uh oh, is this when I start saying “You know, back in my days…?”

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  • Azure Mobile Services: lessons learned

    - by svdoever
    When I first started using Azure Mobile Services I thought of it as a nice way to: authenticate my users - login using Twitter, Google, Facebook, Windows Live create tables, and use the client code to create the columns in the table because that is not possible in the Azure Mobile Services UI run some Javascript code on the table crud actions (Insert, Update, Delete, Read) schedule a Javascript to run any 15 or more minutes I had no idea of the magic that was happening inside… where is the data stored? Is it a kind of big table, are relationships between tables possible? those Javascripts on the table crud actions, is that interpreted, what is that exactly? After working for some time with Azure Mobile Services I became a lot wiser: Those tables are just normal tables in an Azure SQL Server 2012 Creating the table columns through client code sucks, at least from my Javascript code, because the columns are deducted from the sent JSON data, and a datetime field is sent as string in JSON, so a string type column is created instead of a datetime column You can connect with SQL Management Studio to the Azure SQL Server, and although you can’t manage your columns through the SQL Management Studio UI, it is possible to just run SQL scripts to drop and create tables and indices When you create a table through SQL script, add the table with the same name in the Azure Mobile Services UI to hook it up and be able to access the table through the provided abstraction layer You can also go to the SQL Database through the Azure Mobile Services UI, and from there get in a web based SQL management studio where you can create columns and manage your data The table crud scripts and the scheduler scripts are full blown node.js scripts, introducing a lot of power with great performance The web based script editor is really powerful, I do most of my editing currently in the editor which has syntax highlighting and code completing. While editing the code JsHint is used for script validation. The documentation on Azure Mobile Services is… suboptimal. It is such a pity that there is no way to comment on it so the community could fill in the missing holes, like which node modules are already loaded, and which modules are available on Azure Mobile Services. Soon I was hacking away on Azure Mobile Services, creating my own database tables through script, and abusing the read script of an empty table named query to implement my own set of “services”. The latest updates to Azure Mobile Services described in the following posts added some great new features like creating web API’s, use shared code from your scripts, command line tools for managing Azure Mobile Services (upload and download scripts for example), support for node modules and git support: http://weblogs.asp.net/scottgu/archive/2013/06/14/windows-azure-major-updates-for-mobile-backend-development.aspx http://blogs.msdn.com/b/carlosfigueira/archive/2013/06/14/custom-apis-in-azure-mobile-services.aspx http://blogs.msdn.com/b/carlosfigueira/archive/2013/06/19/custom-api-in-azure-mobile-services-client-sdks.aspx In the mean time I rewrote all my “service-like” table scripts to API scripts, which works like a breeze. Bad thing with the current state of Azure Mobile Services is that the git support is not working if you are a co-administrator of your Azure subscription, and not and administrator (as in my case). Another bad thing is that Cross Origin Request Sharing (CORS) is not supported for the API yet, so no go yet from the browser client for API’s, which is my case. See http://social.msdn.microsoft.com/Forums/windowsazure/en-US/2b79c5ea-d187-4c2b-823a-3f3e0559829d/known-limitations-for-source-control-and-custom-api-features for more on these and other limitations. In his talk at Build 2013 Josh Twist showed that there is a work-around for accessing shared script code from the table scripts as well (another limitation mentioned in the post above). I could not find that code in the Votabl2 code example from the presentation at https://github.com/joshtwist/votabl2, but we can grab it from the presentation when it comes online on Channel9. By the way: you can always express your needs and ideas at http://mobileservices.uservoice.com, that’s the place they are listening to (I hope!).

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  • Pre-Populate the AppFabric Cache

    When I start talking to people about the caching functionality that is part of Windows Server AppFabric I am usually asked "What is the AppFabric Cache?"  The MSDN page at http://msdn.microsoft.com/en-us/library/ee790954.aspx provides a great overview (below) as well as additional information.  The Cache is defined as: "Windows Server AppFabric caching features use a cluster of servers that communicate with each other to form a single, unified application cache system. As a distributed...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How can I disable Hibernate completely?

    - by Lekensteyn
    I have seen the answer on How to disable hibernating?, but I have no such file. Possibly because that suggestion was written for Ubuntu, not Kubuntu (KDE, not Gnome). I do not have a swap on my encrypted SSD, my system freezes (cannot even change Caps Lock) if I accidentally press the "Hibernate" button at "Energy management". My keyboard has a Hibernate button (Fn + F4) next to the volume control buttons and every time I press the wrong key, the system will freeze after. So, what is the correct way to disable it? If there is no solution, a work-around is welcome too.

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  • Short Season, Long Models - Dealing with Seasonality

    - by Michel Adar
    Accounting for seasonality presents a challenge for the accurate prediction of events. Examples of seasonality include: ·         Boxed cosmetics sets are more popular during Christmas. They sell at other times of the year, but they rise higher than other products during the holiday season. ·         Interest in a promotion rises around the time advertising on TV airs ·         Interest in the Sports section of a newspaper rises when there is a big football match There are several ways of dealing with seasonality in predictions. Time Windows If the length of the model time windows is short enough relative to the seasonality effect, then the models will see only seasonal data, and therefore will be accurate in their predictions. For example, a model with a weekly time window may be quick enough to adapt during the holiday season. In order for time windows to be useful in dealing with seasonality it is necessary that: The time window is significantly shorter than the season changes There is enough volume of data in the short time windows to produce an accurate model An additional issue to consider is that sometimes the season may have an abrupt end, for example the day after Christmas. Input Data If available, it is possible to include the seasonality effect in the input data for the model. For example the customer record may include a list of all the promotions advertised in the area of residence. A model with these inputs will have to learn the effect of the input. It is possible to learn it specific to the promotion – and by the way learn about inter-promotion cross feeding – by leaving the list of ads as it is; or it is possible to learn the general effect by having a flag that indicates if the promotion is being advertised. For inputs to properly represent the effect in the model it is necessary that: The model sees enough events with the input present. For example, by virtue of the model lifetime (or time window) being long enough to see several “seasons” or by having enough volume for the model to learn seasonality quickly. Proportional Frequency If we create a model that ignores seasonality it is possible to use that model to predict how the specific person likelihood differs from average. If we have a divergence from average then we can transfer that divergence proportionally to the observed frequency at the time of the prediction. Definitions: Ft = trailing average frequency of the event at time “t”. The average is done over a suitable period of to achieve a statistical significant estimate. F = average frequency as seen by the model. L = likelihood predicted by the model for a specific person Lt = predicted likelihood proportionally scaled for time “t”. If the model is good at predicting deviation from average, and this holds over the interesting range of seasons, then we can estimate Lt as: Lt = L * (Ft / F) Considering that: L = (L – F) + F Substituting we get: Lt = [(L – F) + F] * (Ft / F) Which simplifies to: (i)                  Lt = (L – F) * (Ft / F)  +  Ft This latest expression can be understood as “The adjusted likelihood at time t is the average likelihood at time t plus the effect from the model, which is calculated as the difference from average time the proportion of frequencies”. The formula above assumes a linear translation of the proportion. It is possible to generalize the formula using a factor which we will call “a” as follows: (ii)                Lt = (L – F) * (Ft / F) * a  +  Ft It is also possible to use a formula that does not scale the difference, like: (iii)               Lt = (L – F) * a  +  Ft While these formulas seem reasonable, they should be taken as hypothesis to be proven with empirical data. A theoretical analysis provides the following insights: The Cumulative Gains Chart (lift) should stay the same, as at any given time the order of the likelihood for different customers is preserved If F is equal to Ft then the formula reverts to “L” If (Ft = 0) then Lt in (i) and (ii) is 0 It is possible for Lt to be above 1. If it is desired to avoid going over 1, for relatively high base frequencies it is possible to use a relative interpretation of the multiplicative factor. For example, if we say that Y is twice as likely as X, then we can interpret this sentence as: If X is 3%, then Y is 6% If X is 11%, then Y is 22% If X is 70%, then Y is 85% - in this case we interpret “twice as likely” as “half as likely to not happen” Applying this reasoning to (i) for example we would get: If (L < F) or (Ft < (1 / ((L/F) + 1)) Then  Lt = L * (Ft / F) Else Lt = 1 – (F / L) + (Ft * F / L)  

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  • Podcast: Dell Perot Systems Relies on Oracle In-Memory Database Cache

    - by john.brust
    Recently we spoke with Bill Binko, Technology Consultant at Dell Perot Systems, about a high volume web-based content delivery system they implemented for a client with Oracle In-Memory Database Cache. Their client needed to respond to ~1 billion hits (web requests) per day, but hadn't been able to support this load. Oracle In-Memory Database Cache allowed for multiple & complicated queries to take place without ever hitting the disk...providing sub-millisecond response time and ability to manage much higher high volumes of data. Old System: Old SQL Server Database, over 300 servers, difficult to maintain. New System: One Oracle Database 11g instance, multiple Oracle RAC nodes, backed up by Oracle Data Guard, and Oracle In-Memory Database Cache to cut query response times by 10x. Listen to the podcast.

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  • Critical Threads Optimization

    - by Rafael Vanoni
    Background One of the more common issues we've been seeing in the field is the growing difficulty in optimizing performance of multi-threaded applications. A good portion of this difficulty is due to the increasing complexity of modern processors that present various degrees of sharing relationships between hardware components. Take any current CMT processor and you'll find any number of CPUs sharing execution pipelines, floating point units, caches, etc. Consequently, applying the traditional recipe of one software thread for each CPU will have varying degrees of success, according to the layout of the underlying hardware. On top of this increasing complexity we've also seen processors with features that aim at dynamically resourcing software threads according to their utilization. Intel's Turbo Boost allows processors to increase their operating frequency if there is enough thermal headroom available and the processor isn't fully utilized. More recently, the SPARC T4 processor introduced dynamic threading, allowing each core to dynamically allocate more resources to its active CPUs. Both cases are in essence recognizing that current processors will be running a wide mix of workloads, some will be designed for throughput, others for low latency. The hardware is providing mechanisms to dynamically resource threads according to their runtime behavior. We're very aware of these challenges in Solaris, and have been working to provide the best out of box performance while providing mechanisms to further optimize applications when necessary. The Critical Threads Optimzation was introduced in Solaris 10 8/11 and Solaris 11 as one such mechanism that allows customers to both address issues caused by contention over shared hardware resources and explicitly take advantage of features such as T4's dynamic threading. What it is The basic idea is to allow performance critical threads to execute with more exclusive access to hardware resources. For example, when deploying an application that implements a producer/consumer model, it'll likely be advantageous to give the producer more exclusive access to the hardware instead of having it competing for resources with all the consumers. In the case of a T4 based system, we may want to have a producer running by itself on a single core and create one consumer for each of the remaining CPUs. With the Critical Threads Optimization we're extending the semantics of scheduling priorities (which thread should run first) to include priority over shared resources (which thread should have more "space"). Now the scheduler will not only run higher priority threads first: it will also provide them with more exclusive access to hardware resources if they are available. How does it work ? Using the previous example in Solaris 11, all you'd have to do would be to place the producer in the Fixed Priority (FX) scheduling class at priority 60, or in the Real Time (RT) class at any priority and Solaris will try to give it more "hardware space". On both Solaris 10 8/11 and Solaris 11 this can be achieved through the existing priocntl(1,2) and priocntlset(2) interfaces. If your application already assigns these priorities to performance critical threads, there's no additional step you need to take. One important aspect of this optimization is that it requires some level of idleness in the system, either as a result of sizing the application before hand or through periods of transient idleness during runtime. If the system is fully committed, the scheduler will put all the available CPUs to work.Best practices If you're an application developer, we encourage you to look into assigning the right priorities for the different threads in your application. Solaris provides different scheduling classes (Time Share, Interactive, Fair Share, Fixed Priority and Real Time) that offer different policies and behaviors. It is not always simple to figure out which set of threads are critical to the performance of a workload, and it may not always be feasible to take advantage of this optimization, but we believe that this can be correctly (and safely) done during development. Overall, the out of box performance in Solaris should meet your workload's requirements. If you are looking into that extra bit of performance, then the Critical Threads Optimization may be what you're looking for.

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  • Sound distortion in Ubuntu 14.04

    - by Aditya Shah
    I recently installed Ubuntu 14.04 on my Dell XPS 15 (L502X). Previously I had Ubuntu 12.04 installed on the laptop along with Windows 8.1 dual boot. The sound worked perfectly fine in Ubuntu 12.04 and is working fine in Windows 8.1. Of late, I have been experiencing sound distortion coming from the subwoofer at moderately high volume levels. At the same level I am unable to reproduce the same effect in Windows 8.1. Also, I did a clean install of Ubuntu 14.04 over 12.04. Can anyone please confirm this and help me with this? Thanks

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  • Install Ubuntu on Mac OS X Mavericks, MacBook Air

    - by Unknown
    I was wondering if its okay to install Ubuntu on my Macbook Air, and if it is okay please let me know the procedure. I would prefer to do it by NOT using reFind (not sure what the name is). The following is my system specification. Hardware Overview: Model Name: MacBook Air Model Identifier: MacBookAir6,2 Processor Name: Intel Core i5 Processor Speed: 1.3 GHz Number of Processors: 1 Total Number of Cores: 2 L2 Cache (per Core): 256 KB L3 Cache: 3 MB Memory: 8 GB System Software Overview: System Version: OS X 10.9.2 (13C1021) Kernel Version: Darwin 13.1.0 Boot Volume: Macintosh HD Boot Mode: Normal MacBook Air (13-inch Mid 2013), OS X Mavericks (10.9.2)

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  • How to Use Windows 8's Storage Spaces to Mirror & Combine Drives

    - by Chris Hoffman
    “Storage Spaces” is a new feature in Windows 8 that can combine multiple hard drives into a single virtual drive. It can mirror data across multiple drives for redundancy or combine multiple physical drives into a single pool of storage. You can even create pools of storage larger than the amount of physical storage space you have available. When the physical storage fills up, you can plug in another drive and take advantage of it with no additional configuration required. Storage Spaces is similar to RAID or LVM on Linux. The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos

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  • Bullet Time in Real Life: Impacts Slowed Down with High Speed Cameras

    - by Jason Fitzpatrick
    Combine a little shooting range fun with a camera capable of shooting a million frames per second and you’ve got yourself the basis of pretty hypnotizing video. In the video above various rifle and handgun rounds are fired at a variety of materials–sheet metal, plate metal, gelatin–and captured in a halo of fragments and splatters. Have an equally enthralling high speed video to share? Throw a link in the comments! [via Mashable] How To Be Your Own Personal Clone Army (With a Little Photoshop) How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume

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