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Date: Mon, 15 Mar 2004 15:23:55 -0800
From: Andrew Morton <akpm@osdl.org>
To: Matthias Andree <matthias.andree@gmx.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.4 ext3fs half order of magnitude slower than xfs - bulk
 write
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Matthias Andree <matthias.andree@gmx.de> wrote:
>
> ext3fs runs in the default data=ordered mode for one test and
> data=writeback for another. xfs runs in default mode without special
> realtime tricks or such. XFS is at least by a factor three faster than
> even ext3 -o data=writeback.

It should be possible to generate a simple testcase which demonstrates this
problem on that machine.  Is that something you can do?

>>From your description, write-and-fsync.c from

	http://www.zip.com.au/~akpm/linux/patches/stuff/ext3-tools.tar.gz

would be a good starting point.