W3wp High CPU Usage Scenario

I was working on one of my customers high CPU dumps for w3wp and the reason was synchronizing access to static collections Generic.Dictionary Here is you start checking Dumps    !threadpool CPU utilization: 100% Worker Thread: Total: 32 Running: 32 Idle: 0 MaxLimit: 800 MinLimit: 8 Work Request in Queue: 886   !cpuid CP  F/M/S …

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High CPU Util 90 % of a w3wp Service

High CPU Utilization OF W3wp reach 90% and stuck and only get resolved by IIS reset. We had just 1 dump and that was very tricky to get the right reason behind the CPU usage:  #1 There are a lot of long running threads and here is the threads’ CPU time:  0:000> !runaway User Mode…

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