W3WP.EXE using 100% CPU - where to start?

Question

An ASP.NET web app running on IIS6 periodically shoots the CPU up to 100%. It\'s the W3WP that\'s responsible for nearly all CPU usage during these episodes. The CPU stays pinne

Answer 1

Process Explorer is an excellent tool for troubleshooting. You can try it for finding the problem of high CPU usage. It gives you an insight into the way your application works.

You can also try Procdump to dump the process and analyze what really happened on the CPU.