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From: "Steven Hartland" <killing@multiplay.co.uk>
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Date: Mon, 2 May 2005 22:30:29 +0100
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cc: Eric Anderson <anderson@centtech.com>
cc: Poul-Henning Kamp <phk@phk.freebsd.dk>
cc: Robert Watson <rwatson@freebsd.org>
cc: freebsd-performance@freebsd.org
Subject: Re: Very low disk performance on 5.x
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On 5/2/2005 3:43 PM, Steven Hartland wrote:
>> Nope thats 5.4-STABLE this should be at the very least
>> 260Mb/s as thats what the controller has been measured on
>> linux at even through the FS.
>
>Um... not quite.  That was the number you listed for S/W RAID5.  In that 
>case you're not benchmarking the controller in the same way; the 
>controller is just serving requests with no RAID processing overhead at 
>all.  Could you get results for Linux that bypassed the filesystem but 
>used H/W RAID5 like you are with FreeBSD?

This is true would need to do the H/W RAID5 test on a raw volume
to be sure that the H/W RAID is not a bottleneck.

    Steve


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