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April 2008 - Posts

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

Does interrupting GC.WaitForPendingFinalizers interrupt finalization?

Posted Monday, April 21, 2008 8:09 AM by Tess
I got a question the other day around calling GC.Collect and GC.WaitForPendingFinalizers. The issue revolved around a problem where the finalizer was blocked and where the application would call GC.Collect() and GC.WaitForPendingFinalizers() which then Read More...
2 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

How does the GC work and what are the sizes of the different generations?

Posted Thursday, April 17, 2008 2:10 PM by Tess
During our ASP.NET debugging chat there were many questions around the GC and the different generations. In this post I will try to explain the basics of how the GC works and what you should think about when developing .net applications in relation to Read More...
11 Comments
Attachment(s): FUN421_Stephens.ppt

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

Developer Summit Sessions on Silverlight, MVC, FaceBook, and Work ethics amongst software developers

Posted Friday, April 11, 2008 12:53 PM by Tess
On Wednesday I presented a session on troubleshooting ASP.NET production issues at Developer Summit 2008 in Sweden. It offered a lot of good presentations as usual, and here is a summary of the ones I went to along with some links related to the topics Read More...
4 Comments
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.NET Performance Issues: What if I suspect that my performance problem is in SQL Server Part II

Posted Thursday, April 10, 2008 11:17 AM by Tess
Last week Graham was guest blogging on my blog about PSSDiag and how to gather data with PSS Diag. In this second installment he talks about how to read and understand the data. Graham is in the process of starting his own blog about how to troubleshoot Read More...
3 Comments

.NET Performance Issue: What if I suspect that my performance problem is in SQL server?

Posted Friday, April 04, 2008 10:56 AM by Tess
Very often when investigating ASP.NET or other .NET performance issues we find threads stuck waiting for SQL Server or some other database to respond. I am by no means an expert in SQL Server so I thought I'd invite one of the escalation engineers, Graham Read More...
11 Comments

.NET Debugging Demos Lab 7: Memory Leak - Review

Posted Thursday, April 03, 2008 2:33 PM by Tess
We have reached the end of the .NET Debugging Demos series. And we are going to end it with a review of the last memory leak lab. I am interested to get feedback, either in comments or through email in the contact me section, on what you liked, what you Read More...
7 Comments

Recap of yesterdays ASP.NET Debugging Blog Chat

Posted Thursday, April 03, 2008 9:08 AM by Tess
I have to say that I was happily surprised, not only that so many people showed up and about the amount of questions that came up but also about the type of questions that came up. It was definitely very interesting for me. Tom had a good recap of the Read More...
2 Comments
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Live blog chat about asp.net and debugging with windbg and sos (10 am EST/4 pm CET)

Posted Wednesday, April 02, 2008 11:27 AM by Tess
Welcome to the first blog chat for ASP.NET Debugging. I hope you enjoy this and please let me know your comments on the experience. I am planning on posting a recap of the conversation (or question and answers) after we are done to the blog so that others Read More...
1 Comments
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Questions about .net Exceptions

Posted Tuesday, April 01, 2008 1:48 PM by Tess
One of my readers emailed me the following question I have a simple questions that my management asks me. When I see all kinds of exceptions thrown (null exceptions etc..), what is the user experience? Does their system hand these back to the user? does Read More...
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New version of SilverLatte and Espresso Blend available for download

Posted Tuesday, April 01, 2008 11:59 AM by Tess
I am sure that you have all been awaiting this new version of SilverLatte and Espresso Blend as much as I have. Last week I got a chance to test out the new bits and I was completely elated with all the new features. Especially the new editor add-in for Read More...
12 Comments
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