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Date: Mon, 2 Feb 2004 15:49:59 -0800
From: Andrew Morton <akpm@osdl.org>
To: Nick Piggin <piggin@cyberone.com.au>
Cc: philip@codematters.co.uk, linux-kernel@vger.kernel.org
Subject: Re: 2.6.1 slower than 2.4, smp/scsi/sw-raid/reiserfs
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Nick Piggin <piggin@cyberone.com.au> wrote:
>
> Andrew, any other ideas?

There seems to be a lot more writeout happening.

You could try setting /proc/sys/vm/dirty_ratio to 60 and
/proc/sys/vm/dirty_background_ratio to 40.