From: Evgeniy Polyakov <zbr@ioremap.net>
To: Christoph Lameter <cl@linux.com>
Cc: Eric Dumazet <dada1@cosmosbay.com>,
David Miller <davem@davemloft.net>,
Michael Chan <mchan@broadcom.com>,
Ben Hutchings <bhutchings@solarflare.com>,
netdev@vger.kernel.org
Subject: Re: Network latency regressions from 2.6.22 to 2.6.29 (results with IRQ affinity)
Date: Mon, 20 Apr 2009 23:44:10 +0400 [thread overview]
Message-ID: <20090420194410.GA26909@ioremap.net> (raw)
In-Reply-To: <alpine.DEB.1.10.0904201305360.1585@qirst.com>
Hi.
On Mon, Apr 20, 2009 at 01:29:54PM -0400, Christoph Lameter (cl@linux.com) wrote:
> > I only took traces on receivers to rule out different coalescing delays
> > of NIC that could depend on firmware or version
>
> Hmmm... Okay there could be a firmware influence....
Can you replace the driver in one or another kernel?
Can those be scheduler (I said wrong words I know) iteractions? Maybe
test with sched_rt priority?
--
Evgeniy Polyakov
next prev parent reply other threads:[~2009-04-20 19:44 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-16 16:10 Network latency regressions from 2.6.22 to 2.6.29 Christoph Lameter
2009-04-16 17:21 ` Rick Jones
2009-04-16 19:06 ` Christoph Lameter
2009-04-16 19:29 ` Eric Dumazet
2009-04-16 19:33 ` Christoph Lameter
2009-04-16 22:47 ` David Miller
2009-04-17 13:46 ` Christoph Lameter
2009-04-17 21:43 ` Ilpo Järvinen
2009-04-16 20:05 ` Rick Jones
2009-04-16 18:07 ` Ben Hutchings
2009-04-16 19:02 ` Christoph Lameter
2009-04-16 21:19 ` Ben Hutchings
2009-04-16 22:47 ` David Miller
2009-04-16 19:43 ` Eric Dumazet
2009-04-16 19:50 ` Eric Dumazet
2009-04-16 20:01 ` Christoph Lameter
2009-04-16 23:00 ` David Miller
2009-04-17 16:42 ` Network latency regressions from 2.6.22 to 2.6.29 (results with IRQ affinity) Christoph Lameter
2009-04-18 8:18 ` Eric Dumazet
2009-04-18 8:20 ` Eric Dumazet
2009-04-18 19:43 ` Eric Dumazet
2009-04-20 17:29 ` Christoph Lameter
2009-04-20 17:57 ` Eric Dumazet
2009-04-20 18:13 ` Christoph Lameter
2009-04-20 18:46 ` Eric Dumazet
2009-04-20 19:16 ` Christoph Lameter
2009-04-20 20:07 ` Eric Dumazet
2009-04-20 21:14 ` Christoph Lameter
2009-04-20 21:52 ` Eric Dumazet
2009-04-21 14:00 ` Christoph Lameter
2009-04-21 19:36 ` Network latency regressions from 2.6.22 to 2.6.29 (MSI off) Christoph Lameter
2009-04-20 19:44 ` Evgeniy Polyakov [this message]
2009-04-16 19:55 ` Network latency regressions from 2.6.22 to 2.6.29 Christoph Lameter
2009-04-16 21:57 ` Michael Chan
2009-04-17 13:47 ` Christoph Lameter
2009-04-16 22:59 ` David Miller
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