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• VirtualBox 3.2 Release

  - by [email protected]

  The latest version of VirtualBox is out - version 3.2.  It is the first release as Oracle VirtualBox and there are a lot of new features.  Many of these I see directly impacting the Oracle VDI solution in upcoming releases (just my guess, of course), and I am updating my notebook as I write this. Er... OK - Done!There are enough features that they warrant you taking a look at this two-page VirtualBox Community Bulletin.pdf.  No point in me restating them.If you and your organization haven't tried VirtualBox, or you haven't looked at it in a while, you owe it to yourself to give this a run.  This is small, simple, powerful, software that allows you to do way more than most people would ever need in hosting a Virtual machine on you local machine.  I routinely will do a demo on a two-year-old Macbook running OS X locally, plus a Solaris 10 VM running the Sun Ray server, and a Windows XP VM and hang a couple Sun Rays off of it - and the performance is stellar.You can subscribe to the mailing lists and get access to the Beta releases as they come out as well, if you are into 'bleeding edge'.40,000 downloads a day is the current rate (before this new release), but it will jump for sure now.  Might as well join in!  

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• "Are You There?".. India Tops Logistics List of Emerging Nations

  - by [email protected]

  It's just amazing how far, wide and deep modern supply chains are extending. AMR reported on 15 Apr (M.Burkett, A.Reese) in a SCM webcast that 'Penetrating Emerging Markets" was the top priotiy for organizations based on a recent survey. I took this as both adding new consumers to their prospect-list as well as leveraging 'lower cost labor arbitrage". (Read '3 Billion Capitalists") Supply Chain Quarterly reports that India and Brazil received the highest ranking of the logistics markets in developing nations India tops the list of emerging nations that scores the attractiveness of logistics markets to foreign investors. Developed by the UK-based research firm Transport Intelligence, the new  Emerging Market Logistics Index rated 38 developing countries on 3 factors. 1. "Market size and growth attractiveness," considered a country's economic output, projected growth rate, and population size.  2. "Market compatibility," which examined how well-matched a nation was with the services offered by global logistics providers. This includes a country's security levels, market accessibility, foreign direct investment, distribution of wealth and population, and development of its service sector. 3. "Connectedness," which rated the efficiency of customs and border controls, liner shipping connections, and transportation infrastructure. India claimed the top spot due to its market size and growth prospects. Brazil is second because of its economic performance, good levels of market accessibility, and improving domestic and international transport connections. Are you there? For more information see www.transportintelligence.com/articles_papers. The top 10 emerging countries India Brazil Indonesia Mexico Russia Turkey United Arab Emirates Egypt Saudi Arabia Malaysia Source: Transport Intelligence, The Emerging Markets Logistics Index, March 2010

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• Wifi range issues and intermittent dropouts, Thinkpad Edge

  - by jimbo

  If I am more than a couple of metres from my access point (and I'm seeing this across various APs) with my newish Thinkpad Edge 15, running 10.10, the wifi performance becomes ... flaky. When this is happening, I see the following in dmesg, although I'm not sure if it's related: [ 2497.011099] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2502.012711] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2507.009254] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2512.008367] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2517.007467] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2522.006558] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2527.008157] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2532.007251] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2537.003838] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2542.005427] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2547.004496] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2552.003611] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded lspci -vvv has the following to say about my wireless adapter: 03:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000 Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 49 Region 0: Memory at f0500000 (64-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: iwlagn Kernel modules: iwlagn If I get within a couple of metres of the access point, I still see that output in dmesg, but the connection stabilises. My question is threefold: how do I get better wifi range, what can/should I do about those messages in dmesg, and most crucially, are the two related? As ever let me know if there's other information that would help! Edit: I am using this machine in exactly the same locations I used my previous Thinkpad (T61) running various older versions of Ubuntu, so I definitely feel there is something wrong, rather me having unreasonable expectations of range!

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• Thoughts on web development architecture through integrating C++ in the future to a web application

  - by Holland

  I'm looking to build a website (it's actually going to be a commercial startup) I saw this question and it really shed some light on a few things that I was hoping to understand (kudos to the op). After seeing that, it would make sense that, unless the website were required to actually have millions of hits per day, it wouldn't be a viable solution to write a C++ backend on the server side. But this got me thinking. what if it in the (unlikely) events of the future, it does go that route? The problem is that, while I'm thinking of starting this all using .Net (in the beginning) just to get something quick and easy up without a lot of hassle (in terms of learning), and then moving towards something more Open Source (such as Python/Django or RoR) later to save money and to support OSS, I'm wondering IFF the website actually becomes big, will it be a good idea to integrate a C++ backend, and use Python ontop of C++ for a strong foundation, and then mitigate HTML/CSS/AJAX/etc ontop of the backend's foundation? I guess, what I'd like to know is that, given the circumstance, if this were to happen, would it be a proper approach in terms of architecture? I'd definitely be supporting MVC as that seems to be a great way to implement a website. All in all, would one consider this rational, or are there other alternatives? I like .Net, and I'd like to use it in the beginning, because I have much more experience with that than, say, Python or PHP, and I prefer it in general, but I really do want to support OSS in the future. I suppose the sentence I'm looking for is, "is this pragmatic?"

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• As a solo programmer, of what use can Gerrit be?

  - by s.d

  Disclaimer: I'm aware of the questions How do I review my own code? and What advantages do continuous integration tools offer on a solo project?. I do feel that this question aims at a different set of answers though, as it is about a specific software, and not about general musings about the use of this or that practice or tech stack. I'm a solo programmer for an Eclipse RCP-based project. To be able to control myself and the quality of my software, I'm in the process of setting up a CSI stack. In this, I follow the Eclipse Common Build Infrastructure guidelines, with the exception that I will use Jenkins rather than Hudson. Sticking to these guidelines will hopefully help me in getting used to the Eclipse way of doing things, and I hope to be able to contribute some code to Eclipse in the future. However, CBI includes Gerrit, a code review software. While I think it's really helpful for teams, and I will employ it as soon as the team grows to at least two developers, I'm wondering how I could use it while I'm still solo. Question: Is there a use case for Gerrit that takes into account solo developers? Notes: I can imagine reviewing code myself after a certain amount of time to gain a little distance to it. This does complicate the workflow though, as code will only be built once it's been passed through code review. This might prove to be a "trap" as I might be tempted to quickly push bad code through Gerrit just to get it built. I'm very interested in hearing how other solo devs have made use of Gerrit.

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• Java Spotlight Episode 106: Java Security Update @spoofzu

  - by Roger Brinkley

  Java security update with Bruce Lowenthal and Milton Smith. Right-click or Control-click to download this MP3 file. You can also subscribe to the Java Spotlight Podcast Feed to get the latest podcast automatically. If you use iTunes you can open iTunes and subscribe with this link:  Java Spotlight Podcast in iTunes. Show Notes News Apple's Java Mac OS X 2012-006 Update NightHacking Tour Across Europe Four New Java Champions Oracle Announces Availability of Oracle Solaris 11.1 and Oracle Solaris Cluster 4.1 Oracle Announces General Availability of Oracle Application Development Framework Mobile Bean Validation 1.1 Early Draft JSR 107 Early Draft JCP Elections - Meet the Candidates GlassFish switching to JDK-7 only build Events Oct 30-Nov 1, Arm TechCon, Santa Clara, United States of America Oct 31, JFall, Hart van Holland, Netherlands Nov 2-3, JMaghreb, Rabat, Morocco Nov 5-9, Øredev Developer Conference, Malmö, Sweden Nov 13-17, Devoxx, Antwerp, Belgium Nov 20-22, DOAG 2012, Nuremberg, Germany Dec 3-5, jDays, Göteborg, Sweden Dec 4-6, JavaOne Latin America, Sao Paolo, Brazil Dec 14-15, IndicThreads, Pune, India Feature InterviewMilton Smith leads the security program for Java products at Oracle. His responsibilities span from tactical to strategic: definition and communication of the security vision for Java, working with engineering teams and researchers, as well as industry at large. He has over 20+ years of industry experience with emphasis in programming and computer security. Milton previous employer was Yahoo where he lead security for the User Data Analytics(UDA) property.Bruce Lowenthal is the Senior Director of Security Alerts at Oracle Corporation. What’s Cool Andrew Haley on an OpenJDK ARM64 Port Joe Darcy - JDK bug migration: bugs.sun.com now backed by JIRA Marcus Hirt on Using the Mission Control DTrace Plug-in

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• Six in Six - SQL Server 2012 Webinars

  - by JustinL

  We're running six webinars over the next six months covering our experiences with SQL Server 2012 and customer deployments. I'm presenting the first on upgrading to SQL Server 2012 next month, subsequent sessions will be delivered by colleagues: NOVEMBER: SQL Server 2012 Upgrade Approach and considerations. Friday 23rd November 12:00 – 13:00 Present approaches for upgrade testing, managing risk and rollback. The session will include details on minimizing downtime and upgrading from SQL Server 2000, 2005, and 2008 including.... More details and register. DECEMBER: Delivering Mission Critical BI with SQL Server 2012– Friday 14th December 12:00-13:00 Information is the lifeblood of many organisations and the availability of timely, accurate information is critical to strategic decision making. This session covers the features and capabilities… More details and register. JANUARY: Architecting Highly Available solutions with SQL Server 2012 – Friday 18th January 12:00- 13:00 Overview and comparison of the high availability features available within SQL Server 2012. The session considers business requirements for availability and recoverability and presents a number of alternative solution designs to meet… More details and register. FEBRUARY: Private cloud deployments with SQL Server 2012 – Friday 15th February 12:00- 13:00 Cloud based technology provide cost effective scale and flexibility. This session provides an overview of the benefits organisations can realise through private cloud… More details and register. MARCH: Visualising data patterns with SQL Server 2012 – Friday 22nd March 12:00- 13:00 This webinar demonstrates the ease of delivering business insight by exploring information and identifying trends through data visualisation. SQL Server 2012 provides new capability with enhanced performance and … More details and register. APRIL: Architecting Highly Available solutions with SQL Server 2012 – Friday 26th April 12:00- 13:00 Customers are increasingly interested in leveraging the benefits of cloud based solutions to provide scalable and flexible infrastructure to host their applications. This session looks at common design patterns and workloads… More details and register. Justin Langford - Coeo Ltd SQL Server Consultants | SQL Server Remote DBA

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• Computing pixel's screen position in a vertex shader: right or wrong?

  - by cubrman

  I am building a deferred rendering engine and I have a question. The article I took the sample code from suggested computing screen position of the pixel as follows: VertexShaderFunction() { ... output.Position = mul(worldViewProj, input.Position); output.ScreenPosition = output.Position; } PixelShaderFunction() { input.ScreenPosition.xy /= input.ScreenPosition.w; float2 TexCoord = 0.5f * (float2(input.ScreenPosition.x,-input.ScreenPosition.y) + 1); ... } The question is what if I compute the position in the vertex shader (which should optimize the performance as VSF is launched significantly less number of times than PSF) would I get the per-vertex lighting insted. Here is how I want to do this: VertexShaderFunction() { ... output.Position = mul(worldViewProj, input.Position); output.ScreenPosition.xy = output.Position / output.Position.w; } PixelShaderFunction() { float2 TexCoord = 0.5f * (float2(input.ScreenPosition.x,-input.ScreenPosition.y) + 1); ... } What exactly happens with the data I pass from VS to PS? How exactly is it interpolated? Will it give me the right per-pixel result in this case? I tried launching the game both ways and saw no visual difference. Is my assumption right? Thanks. P.S. I am optimizing the point light shader, so I actually pass a sphere geometry into the VS.

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• Correct For Loop Design

  - by Yttrill

  What is the correct design for a for loop? Felix currently uses if len a > 0 do for var i in 0 upto len a - 1 do println a.[i]; done done which is inclusive of the upper bound. This is necessary to support the full range of values of a typical integer type. However the for loop shown does not support zero length arrays, hence the special test, nor will the subtraction of 1 work convincingly if the length of the array is equal to the number of integers. (I say convincingly because it may be that 0 - 1 = maxval: this is true in C for unsigned int, but are you sure it is true for unsigned char without thinking carefully about integral promotions?) The actual implementation of the for loop by my compiler does correctly handle 0 but this requires two tests to implement the loop: continue: if not (i <= bound) goto break body if i == bound goto break ++i goto continue break: Throw in the hand coded zero check in the array example and three tests are needed. If the loop were exclusive it would handle zero properly, avoiding the special test, but there'd be no way to express the upper bound of an array with maximum size. Note the C way of doing this: for(i=0; predicate(i); increment(i)) has the same problem. The predicate is tested after the increment, but the terminating increment is not universally valid! There is a general argument that a simple exclusive loop is enough: promote the index to a large type to prevent overflow, and assume no one will ever loop to the maximum value of this type.. but I'm not entirely convinced: if you promoted to C's size_t and looped from the second largest value to the largest you'd get an infinite loop!

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• SQLAuthority News – SQL Server Interview Questions And Answers Book Summary

  - by pinaldave

  Today we are using computers for various activities, motor vehicles for traveling to places, and mobile phones for conversation. How many of us can claim the invention of micro-processor, a basic wheel, or the telegraph? Similarly, this book was not written overnight. The journey of this book goes many years back with many individuals to be thanked for. To begin with, we want to thank all those interviewers who reject interviewees by saying they need to know ‘the key things’ regardless of having high grades in class. The whole concept of interview questions and answers revolves around knowing those ‘key things’. The core concept of this book will continue to evolve over time. I am sure many of you will come along with us on this journey and submit your suggestions to us to make this book a key reference for anybody who wants to start with SQL Server. Today we want to acknowledge the fact that you will help us keep this book alive forever with the latest updates. We want to thank everyone who participates in this journey with us. Though each of these chapters are geared towards convenience we highly recommend reading each of the sections irrespective of the roles you might be doing since each of the sections have some interesting trivia about working with SQL Server. In the industry the role of accidental DBA’s (especially with SQL Server) is very common. Hence if you have performed the role of DBA for a short stint and want to brush-up your fundamentals then the upcoming sections will be a great review. Table Of Contents Database Concepts With Sql Server Common Generic Questions & Answers Common Developer Questions Common Tricky Questions Miscellaneous Questions On Sql Server 2008 Dba Skills Related Questions Data Warehousing Interview Questions & Answers General Best Practices [Amazon] | [Flipkart] Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Best Practices, Database, Pinal Dave, PostADay, SQL, SQL Authority, SQL Interview Questions and Answers, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology

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• Get a A Little Smarter . . .

  - by Michelle Kimihira

  Author, Rimi Bewtra, Senior Director, Product Marketing, Oracle Fusion Middleware   This month I had a chance to gain some valuable insights on Oracle’s latest product innovations and customer successes after my conversation with Vice President of Product Management of Oracle Fusion Middleware, Amit Zavery.  In this 10 minute podcast, Amit was able to quickly outline a few of Oracle recent major announcements including: ·         Oracle Exalogic Elastic Cloud – our flagship engineered system for running business applications – provides extreme performance, reliability and scalability while delivering lower total cost of ownership, reduced risk, higher user productivity and one-stop support. ·         Oracle Application Development Framework (ADF) Mobile, is a HTML5 and Java-based framework that enables developers to easily build, deploy, and extend enterprise hybrid mobile applications across multiple mobile operating systems, including iOS and Android, from a single code base. And did you know Oracle has 125,000 Fusion Middleware customers? Amit shared a few of his favorite customer success stories and gave me latest view from the leading Industry Analysts. If you have 10 minutes, you too can get a little smarter … take a listen and let’s catch up soon. Additional Information Product Information on Oracle.com: Oracle Fusion Middleware Follow us on Twitter and Facebook Subscribe to our regular Fusion Middleware Newsletter

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• MMO Data Persistence Question

  - by JasonG

  I wanted to ask a question regarding data persistence strategies for an MMO. I have some experience in the games industry with social synchronous games. At Zynga, we stored static proto data in XML on both the client and the server and stored instance/runtime data in membase. For clarity sake, proto data for a Potion would be PotionName or MaxCharges, while runtime/instance data would be something like ChargesRemaining. So basically, if a player picks up a potion the instance is (via prediction) created from XML data on the client, the request gets sent to the server where the instance is created from XML and then added to membase. Is the same strategy that would be used for soemthing like an MMO? Would it be feasible to have static proto data in some kind of in-memory no-sql database on both client and server with instance data being stored on the server in a more enterprise level database? Or should all data (proto/instance) be stored on the server and the client gets everything from server? I know a lot of this might on certain game requirements, however, i'm basically looking for some general opinion/best practices here if there are any.

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• Internet Explorer 9 Preview 2 link + webcasts for developers

  - by Eric Nelson

  At Web Directions last week in London (10th and 11th June 2010) I promised several folks I would put up a blog post to more information on IE 9.0. True to my word (albeit a little later than I had hoped), here is what I was thinking of: Install First up, Install Preview 2 and try out the demos I was showing at the conference. Remember that IE9 Preview installs side by side with IE8/7 etc. It is not a beta nor is it intended to be a full browser. It is a … preview :-)   Including good old SVG-oids :-) Learn And then check out the following webcasts which were recorded in March this year at MIX: In-Depth Look At Internet Explorer 9 Presenter:  Ted Johnson & John Hrvatin VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/CL28 Slides: Download Videos: MP4 Small WMV Large WMV High Performance Best Practices For Web Sites Presenter: Jason Weber VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/CL29 Slides: Download Videos: MP4 Small WMV Large WMV HTML5: Cross Browser Best Practices Presenter: Tony Ross VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/CL27 Slides: Download Videos: MP4 Small WMV Large WMV Internet Explorer Developer Tools Presenter: Jon Seitel VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/FT51 Slides: Download Videos: MP4 Small WMV Large WMV SVG: The Past, Present And Future of Vector Graphics For The Web Presenter: Patrick Dengler, Doug Schepers VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/EX30 Slides: Download Videos: MP4 Small WMV Large WMV Day 2 Keynote containing IE9 Presenter: Dean Hachamovitch VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/KEY02 Slides: Download Videos: MP4 Small WMV Large WMV

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• Ubuntu 12.04 LTS loops the login screen unless you login as Guest

  - by Mário Silva

  I am running a VMWare Player with a Ubuntu 12.04 LTS Precise Pangloin as Guest on my Windows 7. Sometimes I get the shutdown blue screen error in Windows, this time it happened when I was running the Player. When I restarted everything Ubuntu gave the not so unfamiliar in this forum Login Loop in adminstrator login. I login and there's this black screen where I can only read: "piix4...smbus:0.0.0.07.3 Host Smbus controller not enabled" . When I go to the Prompt in root mode it fails to update and only upgraded, specially some plugins ( I think graphic plugins) which also appear in one an error message after quitting the prompt, but they´are successfully installed. They are not the error message. After that I have been working with the Fail/safe Mode recovery panel. When I try to update via Root I get errors like this: W:failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/release.gpg could not resolve 'extras/ubuntu.com There are 8 more like this referring to areas like: -archive/canonical.com -ppa.Launchpad.net -security.Ubuntu.com -Us.archive.ubuntu.com - release.gpg precise-updates/release.gpg precise_backport/release.gpg Final Message: some index files failed to download.....they have been ignored or old files are used. The black screens most of the time pass by too fast for me to pick up any information. But in general I think I have done everything I was able to in the recovery panel including updating network and graphic packages and recovering filesystem packages and the basic stuff ( I am a beginner regarding Linux ) in the root prompt. Now I am stuck in this screen with graphic options: - Run in low-graphics mode just for one session - Reconfigure Graphics - Troubleshoot the error - Exit to console login I am trying to choose to reconfigure graphics but the mouse disappears in the virtual machine screen and sometimes when options change ity´s only the first and last option. ut this happens from the blue without messages. This particular option menu is in the regular GUI style against a black screen in Terminal style. Really strange. Thanx in advance, all is welcome and appreciated.

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• Collision detection on a 2D hexagonal grid

  - by SundayMonday

  I'm making a casual grid-based 2D iPhone game using Cocos2D. The grid is a "staggered" hex-like grid consisting of uniformly sized and spaced discs. It looks something like this. I've stored the grid in a 2D array. Also I have a concept of "surrounding" grid cells. Namely the six grid cells surrounding a particular cell (except those on the boundries which can have less than six). Anyways I'm testing some collision detection and it's not working out as well as I had planned. Here's how I currently do collision detection for a moving disc that's approaching the stationary group of discs: Calculate ij-coordinates of grid cell closest to moving cell using moving cell's xy-position Get list of surrounding grid cells using ij-coordinates Examine the surrounding cells. If they're all empty then no collision If we have some non-empty surrounding cells then compare the distance between the disc centers to some minimum distance required for a collision If there's a collision then place the moving disc in grid cell ij So this works but not too well. I've considered a potentially simpler brute force approach where I just compare the moving disc to all stationary discs at each step of the game loop. This is probably feasible in terms of performance since the stationary disc count is 300 max. If not then some space-partitioning data structure could be used however that feels too complex. What are some common approaches and best practices to collision detection in a game like this?

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• Best practice for setting Effect parameters in XNA

  - by hichaeretaqua

  I want to ask if there is a best practice for setting Effect parameters in XNA. Or in other words, what exactly happens when I call pass.Apply(). I can imagine multiple scenarios: Each time Apply is called, all effect parameters are transferred to the GPU and therefor it has no real influence how often I set a parameter. Each time Apply is called, only the parameters that got reset are transferred. So caching Set-operations that don't actually set a new value should be avoided. Each time Apply is called, only the parameters that got changed are transferred. So caching Set-operations is useless. This whole questions is bootless because no one of the mentions ways has any noteworthy impact on game performance. So the final question: Is it useful to implement some caching of set operation like: private Matrix _world; public Matrix World { get{ return _world; } set { if (value == world) return; _effect.Parameters["xWorld"].SetValue(value); _world = value; } } Thanking you in anticipation.

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• Problem with WCF-SQL Adapter

  - by Paul Petrov

  When using WCF receive adapter with SQL binding in Polling mode please be aware of the following problem. Problem: At some regular but seemingly random intervals the application stops processing new requests, places a lock on the database and prevent other application from accessing it. Initially it looked like DTC issue, as it was distributed transaction that stalled most of the time. Symptoms: Orchestration instances in Dehydrated state, receive location not picking up new messages, exclusive locks on database tables, errors in DTC trace. Cause: Microsoft has confirmed that there is a bug in the WCF-SQL adapter. In the receive adapter binding configuration there's receiveTimeout property set to 10 minutes by default. If during this period data is not found in the table the adapter would start new thread and allocate more memory without releasing old resources. Thus if there's no new data in the table for a long time a new thread will be created in the host instance every 10 minutes until it reaches threshold (1000) and then there's no threads left for this host instance and it can't start/complete any tasks. Then this host instance won't be able to do anything. If other artifacts are hosted in the instance they will suffer consequences as well. Solution: - Set receiveTimeout to the maximum time 24.20:31:23.6470000. - Place WCF-SQL receive locations in separate host to provide its own thread pool and eliminate impact on other processes - Ensure WCF-SQL dedicated host instances are restarted at interval less or equal to receiveTimeout to flush threads and memory - Monitor performance counters Process/Thread Count/BTSNTSvc{n} for thread count trend and respond to alert if it grows by restarting host instance If you use WCF-SQL Adapter in the Notification mode then make sure to remove sqlAdapterInboundTransactionBehavior otherwise this location will exhibit the same issue. In this case though, setting receiveTimeout doesn't help and new thread will be created at default intervals (10 min) ignoring maximum setting.

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• MySQL Policy-Based Auditing Webinar Recording Now Availabile

  - by Rob Young

  For those who missed the live event, the recording of the "How to Add Policy-Based Auditing to your MySQL Applications" webinar is now available.  You can view it here. This presentation builds on my earlier blog post on MySQL Enterprise Audit that was announced at MySQL Connect in late September.  The web presentation expands on the introductory blog and covers: The regulatory problem to be solved (internal audit, PCI, Sarbanes-Oxley, HIPAA, others) MySQL Audit solutions for both Community and Enterprise users: General Log - use the basic features of the MySQL server MySQL 5.5 open audit API - or use your time and talent to build your own solution MySQL Enterprise Audit - or use the out of the box, ready for production solution from MySQL Simple, step-by-step process for installing, enabling and configuring the MySQL Enterprise Audit plugin for use with existing apps New variables and options for tuning the MySQL Enterprise Audit plugin for your specific use case Best practices for securing and managing audit log files and archived images Roadmap for adding an integrated solution around MySQL Enterprise Audit for MySQL only and Oracle/MySQL shops You can learn all the technical details on MySQL Enterprise Audit in the MySQL docs and learn all about MySQL Enterprise Edition and Auditing here. As always, thanks for your support of MySQL!

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• White Paper on Analysis Services Tabular Large-scale Solution #ssas #tabular

  - by Marco Russo (SQLBI)

  Since the first beta of Analysis Services 2012, I worked with many companies designing and implementing solutions based on Analysis Services Tabular. I am glad that Microsoft published a white paper about a case-study using one of these scenarios: An Analysis Services Case Study: Using Tabular Models in a Large-scale Commercial Solution. Alberto Ferrari is the author of the white paper and many people contributed to it. The final result is a very technical document based on a case study, which provides a level of detail that I don’t see often in other case studies (which are usually more marketing-oriented). This white paper has the following structure: Requirements (data model, capacity planning, client tool) Options considered (SQL Server Columnstore Indexes, SSAS Multidimensional, SSAS Tabular) Data Model optimizations (memory compression, query performance, scalability) Partitioning and Processing strategy for near real-time latency Hardware selection (NUMA analysis, Azure VM tests) Scalability tests (estimation of maximum users per node) If you are in charge of evaluating Tabular as analytical engine, or if you have to design your solution based on Tabular, this white paper is a must read. But if you just want to increase your knowledge of Analysis Services, you will find a lot of useful technical information. That said, my favorite quote of the document is the following one, funny but true: […] After several trials, the clear winner was a video gaming machine that one guy on the team used at home. That computer outperformed any available server, running twice as fast as the server-class machines we had in house. At that point, it was clear that the criteria for choosing the server would have to be expanded a bit, simply because it would have been impossible to convince the boss to build a cluster of gaming machines and trust it to serve our customers.  But, honestly, if a business has the flexibility to buy gaming machines (assuming the machines can handle capacity) – do this. Owen Graupman, inContact I want to write a longer discussion about how companies are adopting Tabular in scenarios where it is the hidden engine of a more complex solution (and not the classical “BI system”), because it is more frequent than you might expect (and has several advantages over many alternative approaches).

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• How are events in games handled?

  - by Alex

  In may games that I have played, I have seen events being triggered, such as when you walk into a certain land area while holding a specific object, it will trigger a special creature to spawn. I was wondering, how do games deal with events such as this? Not in a specific game, but in general among games. The first thought I had was that each place has a hard-coded set of events that it will call when something happens there. However, that would be too inefficient to maintain, as when something new is added, that would require modification of every part of the game that would potentially cause the event to be called. Next up, I had the idea of maybe how GUI programming works. In all of the GUI programming I've done, you create a component and a callback function, or a listener. Then, when the user interacts when the button, the callback function is called, allowing you to do something with it. So, I was thinking that in terms of a game, when a land area gets loaded the game loops over a list of all events, creating instances of them and calling public methods to bind them to the current scene. The events themselves then handle what scene it is, and if it is a scene that pertains to the event, will call the public method of the scene to bind the event to an action. Then, when the action takes place, the scene would call all events that are bound to that action. However, I'm sure that's not how games would operate either, as that would require a lot of creating of events all the time. So how to video games handle events, are either of those methods correct, or is it something completely different?

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• Convert mkv to mp4 with ffmpeg

  - by JohnS

  When I try converting mkv to mp4 using ffmpeg, the following error occurs: [ipod @ 0x16fa0a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: -2 = -2 av_interleaved_write_frame(): Invalid argument I used this command to convert the file: ffmpeg -i input.mkv -vcodec copy -acodec copy -absf aac_adtstoasc output.m4v The input file has the following characteristics: mediainfo input.mkv General Unique ID : 200459305952356554213392832683163418790 (0x96CF0ED8DB5914CBB9E18163689280A6) Complete name : input.mkv Format : Matroska Format version : Version 2 File size : 1.46 GiB Duration : 1h 5mn Overall bit rate : 3 168 Kbps Encoded date : UTC 2010-09-26 21:44:02 Writing application : mkvmerge v2.9.5 ('Tu es le seul') built on Jun 17 2009 16:28:30 Writing library : libebml v0.7.8 + libmatroska v0.8.1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : [email protected] Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Codec ID : V_MPEG4/ISO/AVC Duration : 1h 5mn Bit rate : 2 910 Kbps Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Frame rate : 25.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.126 Stream size : 1.31 GiB (90%) Writing library : x264 core 105 r1724 b02df7b Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=18 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=0 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=2pass / mbtree=0 / bitrate=2910 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00 Default : Yes Forced : No Audio ID : 2 Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Codec ID : A_AC3 Duration : 1h 5mn Bit rate mode : Constant Bit rate : 256 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Stream size : 121 MiB (8%) Language : English Default : Yes Forced : No Being new to ffmpeg, I'm not sure what the error means or how to correct it. Thanks!

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• Manager/Container class vs static class methods

  - by Ben

  Suppose I a have a Widget class that is part of a framework used independently by many applications. I create Widget instances in many situations and their lifetimes vary. In addition to Widget's instance specified methods, I would like to be able to perform the follow class wide operations: Find a single Widget instance based on a unique id Iterate over the list of all Widgets Remove a widget from the set of all widgets In order support these operations, I have been considering two approaches: Container class - Create some container or manager class, WidgetContainer, which holds a list of all Widget instances, support iteration and provides methods for Widget addition, removal and lookup. For example in C#: public class WidgetContainer : IEnumerable<Widget { public void AddWidget(Widget); public Widget GetWidget(WidgetId id); public void RemoveWidget(WidgetId id); } Static class methods - Add static class methods to Widget. For example: public class Widget { public Widget(WidgetId id); public static Widget GetWidget(WidgetId id); public static void RemoveWidget(WidgetId id); public static IEnumerable<Widget AllWidgets(); } Using a container class has the added problem of how to access the container class. Make it a singleton?..yuck! Create some World object that provides access to all such container classes? I have seen many frameworks that use the container class approach, so what is the general consensus?

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• Focus On SOA & BPM for Oracle OpenWorld Now Available

  - by Lionel Dubreuil

  To help our valued customers & partners make the most of time spent at Oracle Openworld, please check out the Focus On Oracle Fusion Middleware documents.  Over the years, we've learned that these provide a great roadmap to must-attend sessions, demos, partner exhibits, and networking events during Oracle OpenWorld. SOA and BPM SOA for Developers BPM In addition to those “Focus On..” documents, session details (speakers, abstracts) can be found in the Content Catalog at: https://oracleus.activeevents.com/connect/search.ww?event=openworld We strongly recommend our customers to attend the following sessions: Service Integration (SOA) & BPM: “Using the Right Tools, Techniques, and Technologies for Integration Projects”  Monday, 10/1/2012; 3:15 PM; Moscone South - 308 BPM Suite: “Oracle Unified Business Process Management Suite 11g Overview and Roadmap” Monday, 10/1/ 2012; 12:15 PM; Moscone South – 308 SOA Suite:“Oracle SOA Suite, the Most Capable Tool for Every Possible Integration Challenge” Monday, 10/1/2012; 10:45 AM; Moscone South - 102 Foundation Pack: “Jump-starting Integration Projects with Oracle AIA Foundation Pack” Tuesday, 10/2/2012; 1:15 PM; Marriott Marquis - Salon 7 Oracle Enterprise Repository: “Gaining Victory over SOA and Application Integration Complexity” Tuesday, 10/2/2012; 1:15 PM; Moscone South - 310 See you in San Francisco! Not attending the show?  Some of the general and key sessions will be available online - so please stay tuned for those announcements as Oracle OpenWorld gets closer.

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• Focus On SOA & BPM for Oracle OpenWorld Now Available

  - by Lionel Dubreuil

  To help our valued customers & partners make the most of time spent at Oracle Openworld, please check out the Focus On Oracle Fusion Middleware documents.  Over the years, we've learned that these provide a great roadmap to must-attend sessions, demos, partner exhibits, and networking events during Oracle OpenWorld. SOA and BPM SOA for Developers BPM In addition to those “Focus On..” documents, session details (speakers, abstracts) can be found in the Content Catalog at: https://oracleus.activeevents.com/connect/search.ww?event=openworld We strongly recommend our customers to attend the following sessions: Service Integration (SOA) & BPM: “Using the Right Tools, Techniques, and Technologies for Integration Projects”  Monday, 10/1/2012; 3:15 PM; Moscone South - 308 BPM Suite: “Oracle Unified Business Process Management Suite 11g Overview and Roadmap” Monday, 10/1/ 2012; 12:15 PM; Moscone South – 308 SOA Suite:“Oracle SOA Suite, the Most Capable Tool for Every Possible Integration Challenge” Monday, 10/1/2012; 10:45 AM; Moscone South - 102 Foundation Pack: “Jump-starting Integration Projects with Oracle AIA Foundation Pack” Tuesday, 10/2/2012; 1:15 PM; Marriott Marquis - Salon 7 Oracle Enterprise Repository: “Gaining Victory over SOA and Application Integration Complexity” Tuesday, 10/2/2012; 1:15 PM; Moscone South - 310 See you in San Francisco! Not attending the show?  Some of the general and key sessions will be available online - so please stay tuned for those announcements as Oracle OpenWorld gets closer.

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• Focus On SOA & BPM for Oracle OpenWorld Now Available

  - by Lionel Dubreuil

  To help our valued customers & partners make the most of time spent at Oracle Openworld, please check out the Focus On Oracle Fusion Middleware documents.  Over the years, we've learned that these provide a great roadmap to must-attend sessions, demos, partner exhibits, and networking events during Oracle OpenWorld. SOA and BPM SOA for Developers BPM In addition to those “Focus On..” documents, session details (speakers, abstracts) can be found in the Content Catalog at: https://oracleus.activeevents.com/connect/search.ww?event=openworld We strongly recommend our customers to attend the following sessions: Service Integration (SOA) & BPM: “Using the Right Tools, Techniques, and Technologies for Integration Projects”  Monday, 10/1/2012; 3:15 PM; Moscone South - 308 BPM Suite: “Oracle Unified Business Process Management Suite 11g Overview and Roadmap” Monday, 10/1/ 2012; 12:15 PM; Moscone South – 308 SOA Suite:“Oracle SOA Suite, the Most Capable Tool for Every Possible Integration Challenge” Monday, 10/1/2012; 10:45 AM; Moscone South - 102 Foundation Pack: “Jump-starting Integration Projects with Oracle AIA Foundation Pack” Tuesday, 10/2/2012; 1:15 PM; Marriott Marquis - Salon 7 Oracle Enterprise Repository: “Gaining Victory over SOA and Application Integration Complexity” Tuesday, 10/2/2012; 1:15 PM; Moscone South - 310 See you in San Francisco! Not attending the show?  Some of the general and key sessions will be available online - so please stay tuned for those announcements as Oracle OpenWorld gets closer.

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