From: "Jeff V. Merkey" <jmerkey@wolfmountaingroup.com>
To: adam radford <aradford@gmail.com>
Cc: dean gaudet <dean@arctic.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Jan Kasprzak <kas@fi.muni.cz>,
linux-kernel@vger.kernel.org
Subject: Re: 3ware disk latency?
Date: Wed, 26 Jul 2006 16:48:21 -0600 [thread overview]
Message-ID: <44C7F135.7000509@wolfmountaingroup.com> (raw)
In-Reply-To: <b1bc6a000607261507g663ad95cwcc4a2ae4622e0fa2@mail.gmail.com>
adam radford wrote:
> 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
> -
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>
Adam,
Isn't it set to this by default or is the default 128?
Jeff
next prev parent reply other threads:[~2006-07-26 22:13 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-10 14:13 3ware disk latency? Jan Kasprzak
2006-07-26 16:52 ` dean gaudet
2006-07-26 20:37 ` Alan Cox
2006-07-26 21:53 ` dean gaudet
2006-07-26 22:07 ` adam radford
2006-07-26 22:10 ` Justin Piszcz
2006-07-26 22:48 ` Jeff V. Merkey [this message]
2006-07-26 22:20 ` adam radford
2006-07-27 3:00 ` dean gaudet
2006-07-27 13:42 ` Jan Kasprzak
2006-07-27 12:11 ` Jan Kasprzak
2006-07-27 18:30 ` David Lang
-- strict thread matches above, loose matches on Subject: below --
2006-08-02 11:48 Dieter Stüken
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