From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthew Wilcox <matthew@wil.cx>
Subject: Re: slow external firewire drive
Date: Wed, 26 Oct 2005 21:33:47 -0600
Message-ID: <20051027033347.GD30726@parisc-linux.org>
References: <20051027015655.GC14010@toucan.gentoo.org>
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To: Eric Edgar <rocket@gentoo.org>
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On Thu, Oct 27, 2005 at 01:56:55AM +0000, Eric Edgar wrote:
> ieee1394: sbp2: Driver forced to serialize I/O (serialize_io=1)
> ieee1394: sbp2: Try serialize_io=0 for better performance

... did you try that?