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January 2006 - Posts

A bag of chips – Math stuff… and books…

Posted Friday, January 27, 2006 9:50 AM by Tess
This is a completely off topic post but I added the “–and a bag of chips” to the blog description to allow myself to write these:) I just came across an article about teaching binary to 3rd graders , through something called the Socratic method, and it’s Read More...
3 Comments

ASP.NET Memory - How much are you caching? + an example of .foreach

Posted Thursday, January 26, 2006 1:54 PM by Tess
I was writing a post on debugging a high memory usage problem caused by storing too much in session scope, but I realized I got in to tangent discussions all the time so I decided to create a separate post on caching first. Caching is by far the most Read More...
18 Comments

.NET Memory Leak Case Study: The Event Handlers That Made The Memory Baloon

Posted Monday, January 23, 2006 10:44 AM by Tess
It always feels like issues come in clusters. One week we get tones of cache related cases, next week everyone is stuck in some lock and so on. Lately I have had a number of issues where there were memory leaks related to event handlers. Problem description Read More...
28 Comments

Request for feedback

Posted Friday, January 20, 2006 10:17 AM by Tess
Not sure if anyone is reading this blog, but if you are and there is something specific you want me to blog about please let me know. On my TODO list right now i have Debugging managed memory leaks Automating debugging with .shell and .foreach etc. Debugging Read More...
33 Comments

Debugging Tips: Use windbg as a calculator, a chat client and more…

Posted Wednesday, January 18, 2006 10:20 PM by Tess
Yes, you read it right… it’s not only a debugger, for only $19.95 extra, we’ll throw in a free calculator and chat client:) and you can even run applications from windbg’s command prompt. Calculator Jokes aside, not even I would open up windbg only for Read More...
3 Comments

Back to Basics - How do I get the memory dumps in the first place? And what is SOS.dll?

Posted Wednesday, January 11, 2006 11:05 PM by Tess
Windbg.exe and its friends can be installed from http://www.microsoft.com/whdc/devtools/debugging/default.mspx Once you have them installed on a machine, you can simply copy the directory where they are installed (usually c:\program files\debugging tools Read More...
18 Comments

A Hang Scenario, Locks and Critical Sections

Posted Monday, January 09, 2006 2:56 PM by Tess
The situation here is that the server at times slows down considerably, or even hangs completely. Requests start timing out and no new requests seem to be getting through. The scenario below is a bit simplified but it shows the technique to find owners, Read More...
15 Comments
 
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