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Message-ID: <20051010104217.20341.qmail@web30305.mail.mud.yahoo.com>
Date: Mon, 10 Oct 2005 03:42:17 -0700 (PDT)
From: subbie subbie <subbie_subbie@yahoo.com>
Subject: Re: 3Ware 9500S-12 RAID controller -- poor performance
To: Jon Burgess <jburgess@uklinux.net>
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <4346EA35.90700@uklinux.net>
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OK,

I now dumped RAID5 and am running all of my 12 disks
separately each partitioned with XFS.

I did a very crude test of reading a single 1GB file
from each of my disks in parallel by putting 12 dd
processes into the background. Each file was read at
approximately 35MB/s giving an aggragate of a little
over 400MB/s.   According to 3Ware support, 400MB/s is
the "theoretical maximum" of this controller.  I'm
very happy with these results.

I want to run a killer test where 400 files are being
read in parallel to see what the combined throughput
would be.   Can anyone recommend a benchmark utility
that would help me do so?  I tried using bonnie/iozone
but they (to my limited understanding) won't do this.

Can anyone point me in the right direction?

Thank you


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