I'm trying to calculate per process cpu utilisation on RHES 3.0 where
the processes are multithreaded e.g java, apache.  When I look in /proc
I see along with the pid, there are also .pid files as well.

My question is:  If I want to calculate the total CPU utilisation of the
process, to I have to use the stat of the .pids as well?

thanks

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