linux-kernel - Re: [REGRESSION] 2.6.19/2.6.20-rc3 buffered write slowdown

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Message-ID: <20070111010605.GU33919298@melbourne.sgi.com>
Date:	Thu, 11 Jan 2007 12:06:05 +1100
From:	David Chinner <dgc@....com>
To:	Christoph Lameter <clameter@....com>
Cc:	David Chinner <dgc@....com>, Nick Piggin <nickpiggin@...oo.com.au>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [REGRESSION] 2.6.19/2.6.20-rc3 buffered write slowdown

On Wed, Jan 10, 2007 at 04:43:36PM -0800, Christoph Lameter wrote:
> You are comparing a debian 2.6.18 standard kernel with your tuned version 
> of 2.6.20-rc3. There may be a lot of differences. Could you get us the 
> config? Or use the same config file and build 2.6.20/18 the same way.

I took the /proc/config.gz from the debian 2.6.18-1 kernel as the
base config for the 2.6.20-rc3 kernel and did a make oldconfig on
it to make sure it was valid for the newer kernel but pretty much
the same. I think that's the right process, so I don't think
different build configs are the problem here.

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group
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