Slow response times and Timer_MinBytesPerSecond in HTTP.SYS logs

Slowness in web applications might be result of a wide range of underlying issues in the application code, client side, network or web server. Therefore, system administrators should analyze IIS logs, Failed Request Tracing logs, dump files, and HTTP.SYS logs to narrow down the issue.

w3wp.exe is Suspended after dump collection

After collecting a dump file by using DebugDiag, you may see w3wp.exe process Suspended in the Resource Monitor. This is a known issue with the new version of DebugDiag and it’s a UI problem. The process is actually functional (IIS is able to server websites).

BadImageFormatException: Bad method token

If you are using AppDynamics version 4.5.17 or lower and receiving “BadImageFormatException: Bad method token” error while trying to access your application hosted on IIS, please update your AppDynamics to mitigate a known issue.