Messages in this thread | | | Date | Tue, 30 Sep 2008 13:22:41 +0200 | From | Ingo Molnar <> | Subject | Re: How how latent should non-preemptive scheduling be? |
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* Sitsofe Wheeler <sitsofe@yahoo.com> wrote:
> cat-7717 [000] 1392.941867: __tasklet_schedule <-ath5k_intr > cat-7717 [000] 1393.005963: __tasklet_schedule <-ath5k_intr > cat-7717 [000] 1393.033222: __switch_to <-schedule > > Here a schedule seemingly doesn't happen for a few hundredths of a second...
that's about 60 msecs. ath5k_intr IRQ handling overhead? IRQ handlers are non-preemptible. (even under CONFIG_PREEMPT=y)
Ingo
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