debugging - IIS crashes when serving an ASP.NET application under heavy load. How to troubleshoot it? -

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i working on asp.net web application, seems working when try debug in visual studio. when emulate heavy load, iis crashes without trace -- log entry in system journal generic, "the world wide web publishing service terminated unexpectedly. has done 4 time(s)." how possible more information iis troubleshoot problem?

download debugging tools windows: http://www.microsoft.com/whdc/devtools/debugging/default.mspx

debugging tools windows has has script (adplus) allows create dumps when process crashes: http://support.microsoft.com/kb/286350

the command should (if using iis6):

cscript adplus.vbs -crash -pn w3wp.exe

this command attach debugger worker process. when crash occurs generate dump (a *.dmp file).

you can open in windbg (also included in debugging tools windows). file > open crash dump...

by default, windbg show (next command line) thread process crashed.

the first thing need in windbg load .net framework extensions:

.loadby sos mscorwks

then, display managed callstack:

!clrstack

if thread not running managed code, you'll need check native stack:

kpn 200

this should give ideas. continue troubleshooting recommend read following article:

http://msdn.microsoft.com/en-us/library/ms954594.aspx


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