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Date: Mon, 15 Jul 2002 09:26:03 +0100
From: Sam Vilain <sam@vilain.net>
To: Dax Kelson <dax@gurulabs.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] Ext3 vs Reiserfs benchmarks
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Dax Kelson <dax@gurulabs.com> wrote:

> > Any suggestions or comments appreciated.
> Thanks for the feedback. Look for more testing from us soon addressing
> the suggestions brought up.

One more thing - can I just make the comment that testing freshly formatted filesystems is not going to show up ext2's real weaknesses, that happen to old filesystems - particularly those where the filesystem has been allowed to fill up.

I timed *15 minutes* for a system I admin to unlink a single 1G file on a fairly old ext2 filesystem the other day (perhaps ext3 would have improved this, I'm not sure).  It took 30 minutes to scan a snort log directory log on ext2, but less than 2 minutes on reiser - and only 3 seconds once it was in the buffercache.

You are testing for a mail server - how many mailboxes are in your spool directory for the tests?  Try it with about five to ten thousand mailboxes and see how your results vary.
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