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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...
6 Comments

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...
8 Comments

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...
11 Comments

.NET Exceptions: Quick WinDbg/SOS tip on how to dump all the .NET exceptions on the heap

Posted Thursday, April 16, 2009 1:11 PM by Tess
Since a .net exception is a .NET object like any other, it gets stored on the GC heap when you (or some code you call) calls new XXException().  This means that if you have a memory dump of a process you can dump out all the recent exceptions that Read More...
10 Comments

Troubleshooting .Net SQL Connectivity issues: What data should you gather?

Posted Friday, January 23, 2009 3:46 PM by Tess
Spike in our data access support team has a really good blog talking about data access related issues in .net. Recently he wrote a really good post about what you should gather to troubleshoot a connectivity issue effectively such as Connection strings Read More...
3 Comments

Slides for interactive TechEd Sessions about debugging .net issues in windbg

Posted Friday, November 21, 2008 10:37 AM by Tess
... and here are the slides for the interactive session Read More...
2 Comments
Attachment(s): Debugging Performance Issues, Memory Issues and Crashes in .net Applications-rev.pptx

Slides and resources for TechED presentations about debugging .NET issues with Windbg

Posted Friday, November 21, 2008 10:32 AM by Tess
I still have to figure out a way to host the video from the break-out session but until then, here are the slides for my presentations (attached). And here are a list of some of the tools and resources I used for the presentations Tool/Resource Comment Read More...
8 Comments
Attachment(s): Common ASP.NET Production Issues-rev.pptx

Making it easier to debug .net dumps in windbg using .cmdtree

Posted Thursday, September 18, 2008 11:20 AM by Tess
John Robbins beat me to the punch and wrote an excellent post about using .cmdtree in windbg to ease some .net debugging pain in windbg. The windbg .cmdtree command allows you to create a popup window in windbg with commands that execute when you click Read More...
9 Comments

Q&A Reader emails about .NET memory leaks and random questions

Posted Tuesday, September 16, 2008 1:36 PM by Tess
Here are of some of the reader emails I got this week and my answers to them... How do I troubleshoot this memory leak Debugging techniques for capturing stacks of OOMS Do you have a list of Debugging 101 links? Debugging managed code in IE Getting to Read More...
9 Comments

Quick Debugging Tip: Disable apppool recyling while getting crash dumps

Posted Friday, September 12, 2008 10:40 AM by Tess
I have probably mentioned this before, but I think it is worth mentioning again because of the frequency of this issue. When debugging a crash, we usually get customers to use a crash rule in debug diag or to use adplus -crash to get memory dumps at the Read More...
3 Comments

Creating a UI Module For IIS7 to watch Current Requests

Posted Thursday, August 28, 2008 4:09 PM by Tess
A while back I posted about Failed Request Tracing in IIS 7 and I mentioned the command appcmd list requests which lists the requests that are currently executing in the process... I was playing around a bit with UI Modules in IIS7, you know the ones Read More...
10 Comments
Attachment(s): CurrentRequestsUI.zip

Debugging Silverlight applications with windbg and sos.dll

Posted Thursday, August 21, 2008 11:51 AM by Tess
If you have hangs, performance, memory issues, exceptions or crashes in Silverlight applications you can debug them using windbg and sos just like you would if the issues occurred in other .net applications. The difference is that Silverlight in IE runs Read More...
20 Comments

Troubleshooting a performance issue with Failed Request Tracing and appcmd in IIS7

Posted Tuesday, August 19, 2008 8:26 AM by Tess
I know I'm a little late in the game, but I decided that after vacation it was finally time for me to install Windows 2008 on my Vista box and play around with some of the IIS 7 features like Failed Request Tracing (known as FRT or FREB) and the appcmd Read More...
8 Comments

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
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