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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

ASP.NET Crash: StackOverflowException with Server.Transfer

Posted Tuesday, May 06, 2008 10:54 AM by Tess
I have written a few posts about stackoverflow exceptions, here, here , here and here . The one I am going to talk about today is one of those unfortunate cases where you are trying to do the right thing and still shoot yourself in the foot. Problem description: Read More...
13 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 Case Study: Stackoverflow Exception when using a complex rowfilter

Posted Monday, March 31, 2008 11:02 AM by Tess
When you use very complex Rowfilters or expressions on datasets or datatables you may end up getting a stackoverflow exception. Eber was running into this and posted a comment here. Since it is something we see from time to time and it was a bit to long Read More...
6 Comments

.NET Debugging Demos Lab 5: Crash

Posted Wednesday, March 05, 2008 11:19 AM by Tess
Last week I published a debugging challenge for Lab 5. It was really interesting to see the results and I have to say I was really happy to see the excellent results from the poeple who commented on the debugging challenge (sounds like my work here is Read More...
5 Comments
Attachment(s): unknown.cfg

.NET Debugging Demos Lab5: Crash - Review

Posted Wednesday, March 05, 2008 8:29 AM by Tess
Since I already posted a challenge for this lab earlier I didn't want to wait too long with publishing the review... Previous demos and setup instructions If you are new to the debugging labs, here you can find information on how to set up the labs as Read More...
12 Comments
Attachment(s): unknown.cfg

.NET Debugging Demos Lab 2: Crash - Review

Posted Monday, February 11, 2008 2:52 PM by Tess
Hi all, I realize that you probably haven't all had a chance to look at the Crash lab yet, considering I just published it on Friday but here is the review for it. I have to say that considering the amount of downloads for the buggy bits site I am a bit Read More...
30 Comments

.NET Debugging Demos Lab 2: Crash

Posted Friday, February 08, 2008 12:52 PM by Tess
It was nice to see that so many people downloaded the demo site already and checked out the lab instructions for the first lab, and thanks to Pedro for pointing out that the original demo site required .NET Framework 3.5... I've changed it now so the Read More...
21 Comments

ASP.NET Crash: System.Security.Cryptography.CryptographicException

Posted Wednesday, October 31, 2007 4:20 PM by Tess
This has been a busy month for blogging for me, I'm up to a whopping 8 posts this month including this one which is the most I have written in any given month (since Feb 2006)... We have seen a few cases lately where ASP.NET apps die due to an unhandled Read More...
5 Comments

ASP.NET Case Study: Tracing your way to Out Of Memory Exceptions

Posted Thursday, March 15, 2007 5:50 PM by Tess
One of my colleagues asked me to look at a memory dump for a customer and I thought that was I found was fairly interesting so here is the story. Problem description: Memory in our ASP.NET application (w3wp.exe) keeps growing and growing and requests Read More...
4 Comments

ASP.NET Crash: Bad CacheItemRemovedCallback - Part II

Posted Monday, November 27, 2006 11:47 AM by Tess
In August I wrote about how you could cause a nasty high memory situation by using CacheItemRemovedCallbacks improperly, today I got a case where improper use of CacheItemRemovedCallback caused a crash, so I figured I'll use it to show you how you can Read More...
11 Comments

ASP.NET Crash - Crazy looping in a SiteMap

Posted Tuesday, October 10, 2006 4:10 PM by Tess
It's been a while again. Lots of prepping for the debugging workshops and a bit of re-modeling done to the house but now it's time to write again... The other day I received an email about my blog with the following question (slightly paraphrased): I Read More...
5 Comments

ASP.NET Case Study: Lost session variables and appdomain recycles

Posted Wednesday, August 02, 2006 2:31 PM by Tess
Last night I got a question from one of the readers of the blog that went like this: “We are facing a problem that i cannot understand, every now and than i see that my app domain is recycled (i have a log in the application_end), I check the IIS logs Read More...
80 Comments

ASP.NET 2.0 Crash case study: Unhandled exceptions

Posted Thursday, April 27, 2006 10:59 AM by Tess
For a long time all my case studies have been on 1.1. it’s time to venture out in 2.0 land and look at what may seem like a 2.0 specific issue. I say “may seem” because this case study will only directly crash if you are using 2.0, but as you’ll learn Read More...
66 Comments
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