Messages in this thread | | | Date | Wed, 11 Apr 2007 16:15:36 +0200 | From | Eric Dumazet <> | Subject | Re: Performance Stats: Kernel patch |
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On Wed, 11 Apr 2007 15:59:16 +0400 Maxim Uvarov <muvarov@ru.mvista.com> wrote:
> Patch adds Process Performance Statistics. > It make available to the user the following > new per-process (thread) performance statistics: > * Involuntary Context Switches > * Voluntary Context Switches > * Number of system calls > > This data is useful for detecting hyperactivity > patterns between processes.
Your description is not very clear about the semantic of your stats.
You currently returns stats only for thread(s) (not process as you claimed)
Please check kernel/sys.c:k_getrusage() to see how getrusage() has to sum *lot* of individual fields to get precise process numbers (even counting stats for dead threads)
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