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Setting .NET breakpoints in Windbg for applications that crash on startup

Posted Thursday, June 05, 2008 3:51 PM by Tess
I recently received a question from a reader who wanted to know how to set breakpoints in code for applications that crash on startup. The email went like this: I have a .NET app which is crashing upon startup (it even causes DW20.exe to make an appearance). Read More...
4 Comments

My presentation on Troubleshooting ASP.NET applications at Oredev

Posted Monday, May 26, 2008 12:01 PM by Tess
The guys at Oredev are in the midst of preparing for the next Oredev conference in November. Sadly I won't be presenting there this year because of other comittments. I say sadly because it was an awesome event last year. If you want to check out my presentation Read More...
1 Comments

The 21 most popular blog posts

Posted Wednesday, May 21, 2008 3:45 PM by Tess
I started this blog 2.5 years ago today, mostly because I felt that the same types of issues came up over and over and over in our support cases. I figured that if I started writing about them, a lot of people would be able to resolve them on their own, Read More...
7 Comments

DebugDiag 1.1 or Windbg, which one should I use? and how do I gather memory dumps

Posted Wednesday, May 21, 2008 1:40 PM by Tess
If you have read any of my posts you have probably noticed that I am very partial to windbg and the debugging tools for windows. I often get friendly nudges from the developers of debugdiag when I suggest using adplus and windbg on internal discussion Read More...
7 Comments

"Failed to start stack walk: 80004005", "Following frames may be wrong" and other errors you may see in windbg

Posted Tuesday, May 13, 2008 4:33 PM by Tess
When you debug .net applications you will sometimes get error messages in windbg. Here are a few of the ones I most commonly get questions around... Failed to start stack walk If you run the sos command !clrstack to display the .net stack on a thread, Read More...
13 Comments

ntdll!kifastSystemcallret, SharedUserData!SystemCallStub and search engines...

Posted Wednesday, May 07, 2008 11:31 AM by Tess
If I were to pick out ten keywords for my blog I would pick, in no particular order, ASP.net, windbg, sos, debugging, .net exceptions, memory leaks, performance issues, OutOfMemory exceptions, garbage collection, troubleshooting. Those are the things Read More...
0 Comments

Why are some commands missing in sos for 2.0 compared to sos for 1.1?

Posted Wednesday, April 30, 2008 8:27 AM by Tess
This question that I got from a reader is something that I get asked pretty frequently... "I met a small problem during my dump analysis, our application is using .net 2.0. when I load 2.0 version of sos.dll, some of useful extension commands are lost, Read More...
0 Comments

Setting breakpoints in .net code using !bpmd

Posted Monday, April 28, 2008 4:52 PM by Tess
From time to time I get questions like "our process spawns a lot of threads, how do we know who created them?" or "can I tell how many times we call this method?". You can answer both of these questions by setting breakpoints, and below is a simple sample Read More...
5 Comments

Pimp up your debugger: Creating a custom workspace for windbg debugging

Posted Friday, April 18, 2008 1:19 PM by Tess
From time to time I get questions about how to change settings in windbg like this one... The default color scheme for the command window is really annoying, because it is always black and white. It is really hard to figure out something in the screen Read More...
3 Comments

My presentation on Troubleshooting ASP.NET production issues at Developer Summit 2008

Posted Friday, April 11, 2008 1:23 PM by Tess
The purpose of my presentation was to show some common pitfalls and of course to show off windbg and sos just to show people that if you have a hang, perf issue, memory leak or crash, there are tools out there that can help you figure out the root cause Read More...
2 Comments
Attachment(s): DevSummit.zip

.NET Debugging Demos Lab 1: Hang - Review

Posted Wednesday, February 06, 2008 2:18 PM by Tess
Earlier this week I published the first .NET Debugging Demos Lab. If you haven't downloaded and tried it out you can get it here . This is a review of this lab with answers to the questions and comments inline in red. Note: results and thread IDs will Read More...
31 Comments

.NET Debugging Demos Lab 1: Hang

Posted Monday, February 04, 2008 10:23 AM by Tess
This is the first in a series of about 10 labs on .NET debugging. The lab will use a site called BuggyBits, and as the name suggests the bits are extremely buggy. To get started, follow the setup instructions posted here . I have a feeling that these Read More...
27 Comments

.NET Debugging Demos - Information and setup instructions

Posted Monday, February 04, 2008 10:12 AM by Tess
.NET Debugging Demos This is a series of debugging demos aimed to help you get some hands on experience in debugging the most common types of Hang/performance, memory and crash scenarios in .net applications. The demos are written in ASP.NET which means Read More...
28 Comments
Attachment(s): BuggyBits.zip

Learning .NET debugging

Posted Wednesday, January 30, 2008 1:35 PM by Tess
I often get questions like How do I learn .net debugging? What books should I read? Where can I find more information? I know everyones learning style is different so this might not be the best way for you, but the way I try to learn things is by "teaching". Read More...
37 Comments

More ASP.NET debugging with SOS

Posted Tuesday, January 15, 2008 10:04 AM by Tess
One of my colleagues has started a blog that is worth reading if you like this blog. His name is Tom and he is also an Escalation Engineer in the ASP.NET team but not only that, he is also one of the developers of sos.dll. Read his blog here: http://blogs.msdn.com/tom/ Read More...
3 Comments
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