Messages in this thread | | | Date | Tue, 22 Jan 2008 17:05:57 +0100 | From | Ingo Molnar <> | Subject | Re: Rescheduling interrupts |
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* S.Çağlar Onur <caglar@pardus.org.tr> wrote:
> > My theory is that for whatever reason we get "repeat" IPIs: multiple > > reschedule IPIs although the other CPU only initiated one. > > Ok, please see http://cekirdek.pardus.org.tr/~caglar/dmesg.3rd :)
hm, the IPI sending and receiving is nicely paired up:
[ 625.795008] IPI (@smp_reschedule_interrupt) from task swapper:0 on CPU#1: [ 625.795223] IPI (@native_smp_send_reschedule) from task amarokapp:2882 on CPU#1:
amarokapp does wake up threads every 20 microseconds - that could explain it. It's probably Xorg running on one core, amarokapp on the other core. That's already 100 reschedules/sec.
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