How to Identify Why an Application Pool is Recycling in IIS 7+ and DebugDiag 2 Fails to Add Managed Breakpoint in .NET 4.6+ in one post

  Identifying why Application Pool is recycling Starting with IIS 7, application recycle for managed Web Applications does not recycle w3wp.exe (IIS Worker Process), instead it simply reload (unload and load a new one) the Application Domain. I mentioned it on another post how to identify the cause of an application pool recycle, but now…

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The strange case of the Application Pool recycling causing high CPU

  This case came as a performance issue. Exchange Web Services stopped responding and CPU skyrocketed. The Exchange team captured a manual dump file and tried in vain to recycle the application. The problem was eventually resolved by invoking a full IISRESET. I was added to the case to help identify why the problem was…

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Creating DebugDiag rule to generate SharePoint process dump based on ULS Tags

SharePoint has a very comprehensive and configurable diagnostic logging infrastructure known as ULS logs. Most of the ULS log entries include a unique tag called eventId . This tag is a 32-bits field containing only letters and numbers (e.g.. e5mc). This tag can help identify which portion of the code emitted the log. It is…

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