* S.Çağlar Onur <caglar@pardus.org.tr> wrote:

quoted text
> > 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.

	Ingo
--
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/