Monday, December 21, 2009

webcam demo on channel 9

webcam demo on channel 9

webcam demo on channel 9

Posted: 21 Dec 2009 05:23 AM PST

At PDC 09 I was able to spend some time with Pete Brown to talk about our Star Trek Surface Application but also some of the Silverlight 4 demos we have put together. Below is one of those, this is a sample I put together with one of our great user experience...( read more )...(read more)

High CPU in .NET app using a static Generic.Dictionary

Posted: 21 Dec 2009 02:02 AM PST

A couple of weeks ago I helped out on a high CPU issue in an ASP.NET application. Problem description Every so often they started seeing very slow response times and in some cases the app didn't respond at all and at the same time the w3wp.exe process was sitting at very high CPU usage 80-90%.  This started happening under high load, and to get the application to start responding again they needed to restart IIS. Debugging the problem They gathered a few memory dumps during the high CPU situation for us to review and when running the sos.dll command ~* e !clrstack (in windbg) to see what all the threads were doing we found that they were all stuck in callstacks similar to this one: OS Thread Id: 0x27dc (124) ESP      ...(read more)

Windows Client Developer Roundup for 12/21/2009

Posted: 20 Dec 2009 10:00 PM PST

On to Windows Client Developer Roundup #3 for 12/21/2009 If you have something interesting you've done or have run across, please send me the URL and brief description via the contact link on my blog. And to everyone reading this live, I wish you a very...( read more )...(read more)

Falling Snow in Silverlight

Posted: 20 Dec 2009 07:13 PM PST

Learn how to create a falling snow effect in Silverlight using nothing more than a behavior....( read more )...(read more)
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