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Message-ID: <b1bc6a000607261507g663ad95cwcc4a2ae4622e0fa2@mail.gmail.com>
Date: Wed, 26 Jul 2006 15:07:28 -0700
From: "adam radford" <aradford@gmail.com>
To: "dean gaudet" <dean@arctic.org>
Subject: Re: 3ware disk latency?
Cc: "Alan Cox" <alan@lxorguk.ukuu.org.uk>, "Jan Kasprzak" <kas@fi.muni.cz>,
       linux-kernel@vger.kernel.org
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On 7/26/06, dean gaudet <dean@arctic.org> wrote:
>
> unfortunately when i did the experiment i neglected to perform
> simultaneous tests on more than one 3ware unit on the same controller.  i
> got great results from a raid1 or from a raid10 (even a raid5)... but
> never i only tested one unit at a time.
>

Did you try setting /sys/class/scsi_host/hostX/cmd_per_lun to 256 / num_units ?

-Adam