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From: Denys Fedoryschenko <denys@visp.net.lb>
To: Eric Dumazet <dada1@cosmosbay.com>
Cc: Vladimir Ivashchenko <hazard@francoudi.com>, netdev@vger.kernel.org
Subject: Re: bond + tc regression ?
Date: Wed, 6 May 2009 13:49:29 +0300	[thread overview]
Message-ID: <200905061349.29805.denys@visp.net.lb> (raw)
In-Reply-To: <4A016955.6030901@cosmosbay.com>

On Wednesday 06 May 2009 13:41:25 Eric Dumazet wrote:
> You must do for example (to bind on CPU 0)
>
> echo 1 >/proc/irq/default_smp_affinity
>
> ifconfig eth1 down
> # IRQ of eth1 handled by CPU0 only
> echo 1 >/proc/irq/34/smp_affinity
> ifconfig eth1 up
>
> ifconfig eth0 down
> # IRQ of eth0 handled by CPU0 only
> echo 1 >/proc/irq/36/smp_affinity
> ifconfig eth0 up
I think better to use some method over ethtool, that will cause reset.
WHen you do down - you will loose default route, beware of that
>
>
> One thing to consider too is the BIOS option you might have, labeled
> "Adjacent Sector Prefetch"
>
> This basically tells your cpu to use 128 bytes cache lines, instead of 64
>
> In your forwarding worload, I believe this extra prefetch can slowdown your
> machine.
>
>
> --
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  reply	other threads:[~2009-05-06 10:49 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-05 15:45 bond + tc regression ? Vladimir Ivashchenko
2009-05-05 16:25 ` Denys Fedoryschenko
2009-05-05 16:31 ` Eric Dumazet
2009-05-05 17:41   ` Vladimir Ivashchenko
2009-05-05 18:50     ` Eric Dumazet
2009-05-05 23:50       ` Vladimir Ivashchenko
2009-05-05 23:52         ` Stephen Hemminger
2009-05-06  3:36         ` Eric Dumazet
2009-05-06 10:28           ` Vladimir Ivashchenko
2009-05-06 10:41             ` Eric Dumazet
2009-05-06 10:49               ` Denys Fedoryschenko [this message]
2009-05-06 18:45           ` Vladimir Ivashchenko
2009-05-06 19:30             ` Denys Fedoryschenko
2009-05-06 20:47               ` Vladimir Ivashchenko
2009-05-06 21:46                 ` Denys Fedoryschenko
2009-05-08 20:46                   ` Vladimir Ivashchenko
2009-05-08 21:05                     ` Denys Fedoryschenko
2009-05-08 22:07                       ` Vladimir Ivashchenko
2009-05-08 22:42                         ` Denys Fedoryschenko
2009-05-17 18:46                           ` Vladimir Ivashchenko
2009-05-18  8:51                             ` Jarek Poplawski
2009-05-06  8:03       ` Ingo Molnar
2009-05-06  6:10     ` Jarek Poplawski
2009-05-06 10:36       ` Vladimir Ivashchenko
2009-05-06 10:48         ` Jarek Poplawski
2009-05-06 13:11           ` Vladimir Ivashchenko
2009-05-06 13:31             ` Patrick McHardy

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