httpd process hanging

Any idea how to track what site is causing httpd to hang and consume all CPU? Everyday on one server I am finding when running top a hung httpd process and it will hang on for hours consuming 90% or more of CPU driving server load high.

I have tried to use the trace utility in WHM and I get an error telling the process is untracable. I have tried tracing the PID but to no avail and since it runs a nobody ???

I have cpu and mem limits set in httpd.conf does not seem to matter.

Any ideas will be greatly appreciated.

If not anyone know a good script that will auto kill em for me?

 

 

 

 

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