From: Jan Kasprzak <kas@fi.muni.cz>
To: dean gaudet <dean@arctic.org>
Cc: adam radford <aradford@gmail.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-kernel@vger.kernel.org
Subject: Re: 3ware disk latency?
Date: Thu, 27 Jul 2006 15:42:15 +0200 [thread overview]
Message-ID: <20060727134215.GT1703@fi.muni.cz> (raw)
In-Reply-To: <Pine.LNX.4.64.0607261959010.4568@twinlark.arctic.org>
dean gaudet wrote:
: On Wed, 26 Jul 2006, adam radford wrote:
: >
: > Did you try setting /sys/class/scsi_host/hostX/cmd_per_lun to 256 / num_units
: > ?
:
: hmm doesn't look like i can do this in 2.6.16.27:
:
: # ls -l /sys/class/scsi_host/host0/cmd_per_lun
: -r--r--r-- 1 root root 0 Jul 26 19:58 /sys/class/scsi_host/host0/cmd_per_lun
: # echo 85 >!$
: echo 85 >/sys/class/scsi_host/host0/cmd_per_lun
: zsh: permission denied: /sys/class/scsi_host/host0/cmd_per_lun
:
: it'll probably be sometime until i update this box past 2.6.16.x ... but
: i'll keep it in mind and retry the experiment... thanks.
2.6.17.7 also does not allow cmd_per_lun to be written.
-Yenya
--
| Jan "Yenya" Kasprzak <kas at {fi.muni.cz - work | yenya.net - private}> |
| GPG: ID 1024/D3498839 Fingerprint 0D99A7FB206605D7 8B35FCDE05B18A5E |
| http://www.fi.muni.cz/~kas/ Journal: http://www.fi.muni.cz/~kas/blog/ |
> I will never go to meetings again because I think face to face meetings <
> are the biggest waste of time you can ever have. --Linus Torvalds <
next prev parent reply other threads:[~2006-07-27 13:42 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-10 14:13 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
2006-07-26 22:20 ` adam radford
2006-07-27 3:00 ` dean gaudet
2006-07-27 13:42 ` Jan Kasprzak [this message]
2006-07-27 12:11 ` Jan Kasprzak
2006-07-27 18:30 ` David Lang
2006-08-02 11:48 Dieter Stüken
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