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Recap of Oredev and some .net debugging videos

Posted Friday, November 06, 2009 3:21 PM by Tess
This week I attended and spoke at the Oredev conference in Malmö Sweden, and it was great fun as usual. It was a pretty productive few days with a lot of good talks and conversations with some really cool people. I’ll put up a link to the talk as it becomes Read More...
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WOHOO!!!, Debug Diag 64bit is finally released

Posted Thursday, October 29, 2009 12:49 PM by Tess
For all of you who have been asking me if there is a 64bit version of Debug Diag (used to debug 64 bit processes), I am happy to say that yes, Debug Diag 1.1 64bit is now released. You can download it here: http://www.microsoft.com/DOWNLOADS/details.aspx?FamilyID=28bd5941-c458-46f1-b24d-f60151d875a3&displaylang=en#filelist Read More...
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.NET Hang Case study: The danger of locking on strings

Posted Monday, October 19, 2009 3:51 PM by Tess
I had an interesting case today where an asp.net app was stuck in a true deadlock. In other words two threads were both waiting for resources that the other thread owned. The scenario in these cases usually goes something like this: FunctionA (locks on Read More...
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Debug Diag: mscorwks.dll is responsible for 372.46 MBytes worth of outstanding allocations

Posted Friday, October 09, 2009 2:56 PM by Tess
I got an email today on an issue that I think is pretty common when you try to memory leak analysis on a dump with debug diag . They had set up a leak rule in debug diag to monitor for leaks and then ran the memory analysis on it to see what was leaking Read More...
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Finding memory leaks with ANTS Memory Profiler

Posted Wednesday, October 07, 2009 1:05 PM by Tess
I was out looking for some sample scripts for tinyget and ran across this ANTS Memory Profiler review where Scott Seely has tested it out on some of my debugging labs . I haven’t had the time and/or opportunity to test it out myself but since many people Read More...
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ASP.NET Case Study: Hang when loading assemblies

Posted Tuesday, September 22, 2009 3:03 PM by Tess
The other day I came across an issue where an ASP.NET site stopped responding and didn’t start serving requests again until the W3WP.exe process was restarted. We grabbed some memory dumps with debug diag before restarting the process to see what was Read More...
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Busy November, presenting at TechED Europe and Oredev

Posted Thursday, September 17, 2009 2:13 PM by Tess
TechED Europe – Berlin -  9-13th of November This will be the 2nd time I present at TechED. Last time I had an absolute blast and heard some really  good speakers. I am still working with the TechED team on exactly what type of sessions I will Read More...
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Forms authentication fails after installing IIS 7.5

Posted Wednesday, September 16, 2009 11:35 AM by Tess
I recently had a customer that just moved from Windows 2008 to Windows 2008 R2 (changing from IIS 7 to IIS 7.5) and after the move they got some weird forms authentication errors in the event log The problem They have two applications (MyWebApp and MyLoginWebApp) Read More...
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First step in troubleshooting complex issues: Define and scope your issue properly

Posted Wednesday, September 09, 2009 1:21 PM by Tess
Is it a plane, is it a bird, is it a UFO? Before you can delve into any kind of troubleshooting of an issue you need to thoroughly define it.  If you don’t you’ll probably end up spending a lot of time randomly gathering and looking at data that Read More...
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How can I make you learn and benefit from my Blog? and how can I learn from you?

Posted Monday, August 17, 2009 12:43 PM by Tess
Summer is almost over and a new season of heavy work is beginning.  I wanted to take this opportunity to start on a new page and make sure that I’m spending my cycles doing the right things.  I’ve been blogging for almost 3 years now and throughout Read More...
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Why do I see ExecutionEngineException, StackOverflowException and OutOfMemoryException on the heap when debugging .net applications?

Posted Monday, August 10, 2009 2:30 PM by Tess
I came back from a long vacation today and I’ve finally caught up with enough emails to do something useful with my day. As I scanned through my blog email bucket I noticed that I had a lot of emails relating to my last post on dumping .net exceptions Read More...
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Design tips for Developers

Posted Tuesday, July 07, 2009 1:43 PM by Tess
I found a set of really nice, short videos by Arturo Toledo on the Silverlight blog that I thought were worth sharing. He goes through some of the design principles using the Microsoft Expression tools and talks about what you should think about when Read More...
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A case of lost session variables when using out of process session state

Posted Friday, June 26, 2009 4:39 PM by Tess
Recently I had a case where the customer had an issue with session variables.  The claim was that if they use in-proc session state their session variables would work just fine, but if they changed the session mode to stateserver in web.config their Read More...
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Visual Studio 2010 .net debugging resource

Posted Thursday, June 18, 2009 11:31 AM by Tess
If my post on dump debugging in VS 2010 piqued your interest, here is a list of a number of other new debugging features coming up in 2010 http://blogs.msdn.com/ms_joc/archive/2009/05/27/dev10-beta1-free-at-last.aspx I for one will be following the blog Read More...
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First look at debugging .NET 4.0 dumps in Visual Studio 2010

Posted Tuesday, June 16, 2009 12:01 PM by Tess
I know that for a lot of you this is a bit far into the future, but I thought it would be nice to run through a few of my lab scenarios to show off some of the new features in Visual Studio 2010.  I am sure that I will miss a bunch of cool features Read More...
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