[ QUOTE ] From: Eric Dumazet <eric.duma...@gmail.com> Date: Thu, 03 Jan 2013 23:49:40 -0800
> From: Eric Dumazet <eduma...@google.com> > > In various network workloads, __do_softirq() latencies can be up > to 20 ms if HZ=1000, and 200 ms if HZ=100. > > This is because we iterate 10 times in the softirq dispatcher, > and some actions can consume a lot of cycles. > > This patch changes the fallback to ksoftirqd condition to : > > - A time limit of 2 ms. > - need_resched() being set on current task > > When one of this condition is met, we wakeup ksoftirqd for further > softirq processing if we still have pending softirqs. ... > Signed-off-by: Eric Dumazet <eduma...@google.com> Acked-by: David S. Miller <da...@davemloft.net> [ /QUOTE ] Tested-by: Sedat Dilek <sedat.di...@gmail.com> (against Linux v3.8-rc2) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
