From: Eric Dumazet <eric.dumazet@gmail.com>
To: Alexey Vlasov <renton@renton.name>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
netdev <netdev@vger.kernel.org>
Subject: Re: Packet time delays on multi-core systems
Date: Thu, 30 Sep 2010 20:52:45 +0200 [thread overview]
Message-ID: <1285872765.2615.1008.camel@edumazet-laptop> (raw)
In-Reply-To: <20100930181556.GC4094@beaver.vrungel.ru>
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.
next prev parent reply other threads:[~2010-09-30 18:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20100929191851.GC86786@beaver.vrungel.ru>
2010-09-29 21:45 ` Packet time delays on multi-core systems Eric Dumazet
2010-09-30 6:24 ` Alexey Vlasov
2010-09-30 6:33 ` Eric Dumazet
2010-09-30 12:23 ` Alexey Vlasov
2010-09-30 12:44 ` Eric Dumazet
2010-09-30 17:37 ` Alexey Vlasov
2010-09-30 18:03 ` Eric Dumazet
2010-09-30 18:15 ` Alexey Vlasov
2010-09-30 18:52 ` Eric Dumazet [this message]
2010-10-01 10:16 ` Alexey Vlasov
2010-10-01 12:59 ` Eric Dumazet
2010-10-01 14:18 ` Alexey Vlasov
2010-10-01 15:27 ` Eric Dumazet
2010-10-01 18:54 ` Jeff Kirsher
2010-09-30 12:30 ` Alexey Vlasov
2010-09-30 12:46 ` Eric Dumazet
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