netdev - Re: Network latency regressions from 2.6.22 to 2.6.29

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Message-Id: <20090416.154701.21872281.davem@davemloft.net>
Date:	Thu, 16 Apr 2009 15:47:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	cl@...ux.com
Cc:	dada1@...mosbay.com, rick.jones2@...com, netdev@...r.kernel.org
Subject: Re: Network latency regressions from 2.6.22 to 2.6.29

From: Christoph Lameter <cl@...ux.com>
Date: Thu, 16 Apr 2009 15:33:06 -0400 (EDT)

> On Thu, 16 Apr 2009, Eric Dumazet wrote:
> 
>> When you perform your test, you upgrade kernels of both machines ?
> 
> Yes. Both machines always run the same kernel version.

It's good to change multiple variables at a time between
tests...

More seriously, it's going to be hard to isolate anything
unless you concern yourself with changes to one thing
on one system at a time.
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