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Date: Sun, 28 Sep 2008 17:01:20 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Danny Do <ai_quoc@hotmail.com>
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Cc: freebsd-questions@freebsd.org
Subject: RE: Hard disk bottle neck.
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> #ifndef MAXDUMPPGS
>
> I'll update the result. I'll tell you how I go. Maybe sometimes in the next
> fortnight.
>
> Thanks everyone, thanks Wojciech Puchar,
>
> Danny

anyway - how your RAID5 is configured? didn't you selected SMALL stripe 
sizes?

this way - every large read uses 3 disks in parallel, instead of spreading 
multiple reads on multiple disks.

RAID5 performance is high on reads, when configured properly, and when the 
RAID solution is right.