ASP.NET: High CPU usage under no load

Question

I´m facing a huge problem since a couple weeks. I´ve an asp.net application hosted under IIS7 (W2008 SP1), and every a couple hours it starts consuming near 50% of the CPU when

Answer 1

In windbg, issue:

~*e !clrstack

This will dump all of the managed thread stacks and should give you an idea of what is happening in that process.

Also try a !runaway, which will show you how much time each thread has been running. Focus on the stacks of the top threads which are the ones that have been running longest.