Messages in this thread | | | Date | Wed, 27 Aug 2003 16:41:01 +0200 | From | bert hubert <> | Subject | Re: [PATCH] 2.6.0-test4 -- add context switch counters |
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On Tue, Aug 26, 2003 at 06:18:07PM -0700, Andrew Morton wrote:
> > always zero. The appended patch adds fields to struct task_struct to > > count context switches, and adds code to do the counting.
> OK... Why is this useful? A bit of googling doesn't show much interest in > it.
I'm unaware of the cost of accounting this, but I for one have had occasions where my system was reporting 20kcs, and I had no clue which process was causing it. After a while I learned that linuxthreads on SMP can cause this.
> What apps should be reporting this info? /usr/bin/time?
/proc/$$/stat would also be nice.
Thanks.
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