Background Thread CPU

[leonatay]

Hi community,

What is the indication of high background thread CPU (more than 10%) on IIS App Pool .NET v4.5 2 process? What can we suspect from there?

Thanks.

[radek_jasinski]

Hi @leonatay 

The background thread CPU refers to everything that happens outside the monitored request. We can try to create custom services to capture the information that is done there.

Radek

[RazTN7 · Accepted solution]

Hello @leonatay,

Perfmon and DebugDiag, you can collect data that can be helpful in determining the cause of high CPU in application pools.

Once you have confirmed that a w3wp.exe process is experiencing high CPU, you will need to collect the following information in order to determine what is causing the problem:

• A Performance Monitor data collector set.
• A user-mode memory dump of the w3wp.exe process.

Ref - https://learn.microsoft.com/en-us/troubleshoot/developer/webapps/iis/health-diagnostic-performance/t...

Cheers!

RN