Real Case: IIS and Asp.Net hanging or poor performance (intermediary)

How to Extract SQL info from a thread stack

Mfartura's blog — Fri, 13 Jul 2007 22:49:36 GMT

In the post about troubleshooting Asp.Net poor performance I showed you how to identify one possible

Worker Threads Never Changes

jabailo — Sun, 15 Jun 2008 01:21:48 GMT

I am optimizing an ASP.NET 2.0 applicaton running on IIS 5.0 on W2K.

I wrote a c# threaded test application that launches (async) web requests at it. The most I can get through successfully is about 4 or 5 a second.

Monitoring the ASP2.0 Request Execution Time, it stays stable around 1 second. The application is constrained by a single sproc on SQL server, but I'm managed to get this to run around 1s constantly.

However, I don't see the processor taxed more than 5%.

One thing that puzzles me is that the ASP Application Worker Thread counter never goes above 1.

Based on another articles recommendation, I changed the processModel setting in machine.config to use a max 100 worker threads.

Shouldn't I be seeing more performance from my web server?

PSTools

jabailo — Sun, 15 Jun 2008 01:31:13 GMT

Also, Looking at the VBS script in the article -- have you also tried looking at the thread monitor in the PSTools collection...I've used it in Java. Maybe I should use that instead of perfmon....

re: Real Case: IIS and Asp.Net hanging or poor performance (intermediary)

Marcelo Fartura — Tue, 17 Jun 2008 02:33:16 GMT

I haven't tried used PSTools collection :(