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Message-ID: <1285872765.2615.1008.camel@edumazet-laptop> Date: Thu, 30 Sep 2010 20:52:45 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: Alexey Vlasov <renton@...ton.name> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, netdev <netdev@...r.kernel.org> Subject: Re: Packet time delays on multi-core systems Le jeudi 30 septembre 2010 à 22:15 +0400, Alexey Vlasov a écrit : > On Thu, Sep 30, 2010 at 08:03:02PM +0200, Eric Dumazet wrote: > > > > > > The last test were made already concerning such rx queue binding: > > > # cat /proc/irq/60/smp_affinity > > > 001000 > > > # cat /proc/irq/61/smp_affinity > > > 010000 > > > # cat /proc/irq/62/smp_affinity > > > 080000 > > > # cat /proc/irq/63/smp_affinity > > > 800000 > > > > > > > Why 60, 61, 62, 63 ? This should be 753, 754, 755, 756 > > I've got several similar servers, the interrups 60-63 are on > that one that I can test now, so this isn't a mistake. > If you have a burst of 'LOG' matches, it can really slow down the whole thing. You should add a limiter (eg: no more than 5 messages per second) http://netfilter.org/documentation/HOWTO/packet-filtering-HOWTO-7.html This module is most useful after a limit match, so you don't flood your logs. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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