From: Vladimir Ivashchenko <hazard@francoudi.com>
To: Eric Dumazet <dada1@cosmosbay.com>
Cc: netdev@vger.kernel.org
Subject: Re: bond + tc regression ?
Date: Wed, 6 May 2009 02:50:08 +0300 [thread overview]
Message-ID: <20090505235008.GA17690@francoudi.com> (raw)
In-Reply-To: <4A008A72.6030607@cosmosbay.com>
On Tue, May 05, 2009 at 08:50:26PM +0200, Eric Dumazet wrote:
> > I have tried with IRQs bound to one CPU per NIC. Same result.
>
> Did you check "grep eth /proc/interrupts" that your affinities setup
> were indeed taken into account ?
>
> You should use same CPU for eth0 and eth2 (bond0),
>
> and another CPU for eth1 and eth3 (bond1)
Ok, the best result is when assign all IRQs to the same CPU. Zero drops.
When I bind slaves of bond interfaces to the same CPU, I start to get
some drops, but much less than before. I didn't play with combinations.
My problem is, after applying your accounting patch below, one of my
HTB servers reports only 30-40% CPU idle on one of the cores. That won't
take me for very long, load balancing across cores is needed.
Is there any way at least to balance individual NICs on per core basis?
--
Best Regards
Vladimir Ivashchenko
Chief Technology Officer
PrimeTel, Cyprus - www.prime-tel.com
next prev parent reply other threads:[~2009-05-05 23:50 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 [this message]
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
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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