From: Matthew Wilcox <matthew@wil.cx>
To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Tejun Heo <htejun@gmail.com>, Jeff Garzik <jeff@garzik.org>,
Kristen Carlson Accardi <kristen.c.accardi@intel.com>,
linux-scsi@vger.kernel.org, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
edwintorok@gmail.com, axboe@kernel.dk
Subject: Re: [patch 2/4] Expose Power Management Policy option to users
Date: Wed, 1 Aug 2007 10:53:52 -0600 [thread overview]
Message-ID: <20070801165352.GB21219@parisc-linux.org> (raw)
In-Reply-To: <1185891488.3468.2.camel@localhost.localdomain>
On Tue, Jul 31, 2007 at 09:18:08AM -0500, James Bottomley wrote:
> The other comment is that power saving seems to be a property of the
> transport rather than the host. If you do it in the transport classes,
> then you can expose all the knobs the actual transport possesses (which
> is, unfortunately, none for quite a few SCSI transports).
Would it save any power to negotiate down to, say, FAST-20 for the SPI
transport? Or to negotiate narrow instead of wide, so fewer cables have
to be powered?
--
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
next prev parent reply other threads:[~2007-08-01 16:53 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070705194909.337398431@intel.com>
2007-07-05 20:05 ` [patch 1/4] Store interrupt value Kristen Carlson Accardi
2007-08-01 8:18 ` Tejun Heo
2007-08-01 14:01 ` Jeff Garzik
2007-08-01 21:18 ` Kristen Carlson Accardi
2007-07-05 20:05 ` [patch 2/4] Expose Power Management Policy option to users Kristen Carlson Accardi
2007-07-09 19:36 ` Pavel Machek
2007-07-11 16:51 ` Kristen Carlson Accardi
2007-07-30 16:32 ` Jeff Garzik
2007-07-31 6:27 ` Tejun Heo
2007-07-31 14:16 ` Arjan van de Ven
2007-07-31 14:45 ` Tejun Heo
2007-07-31 16:15 ` Arjan van de Ven
2007-07-31 18:29 ` Tejun Heo
2007-08-01 9:23 ` Tejun Heo
2007-08-01 16:31 ` Kristen Carlson Accardi
2007-08-01 21:16 ` Kristen Carlson Accardi
2007-08-09 16:10 ` Kristen Carlson Accardi
2007-07-31 16:18 ` Kristen Carlson Accardi
2007-07-31 17:48 ` Tejun Heo
2007-07-31 20:24 ` Kristen Carlson Accardi
2007-08-01 3:20 ` Tejun Heo
2007-07-31 14:58 ` Tejun Heo
2007-07-31 14:18 ` James Bottomley
2007-08-01 16:53 ` Matthew Wilcox [this message]
2007-08-01 17:06 ` James Bottomley
2007-07-31 16:30 ` Kristen Carlson Accardi
2007-07-31 18:02 ` Tejun Heo
2007-07-31 19:58 ` Kristen Carlson Accardi
2007-08-01 3:24 ` Tejun Heo
2007-08-01 15:52 ` Kristen Carlson Accardi
2007-08-01 21:07 ` Kristen Carlson Accardi
2007-07-05 20:05 ` [patch 3/4] Enable link power management for ata drivers Kristen Carlson Accardi
2007-07-05 22:33 ` Andrew Morton
2007-07-05 22:37 ` Andrew Morton
2007-07-06 0:01 ` Jeff Garzik
2007-07-06 0:02 ` Jeff Garzik
2007-07-06 0:17 ` Andrew Morton
2007-07-06 0:00 ` Jeff Garzik
2007-08-01 8:27 ` Tejun Heo
2007-08-01 9:45 ` edwintorok
2007-08-01 21:11 ` Kristen Carlson Accardi
2007-08-02 5:27 ` Tejun Heo
2007-07-05 20:05 ` [patch 4/4] Enable Aggressive Link Power management for AHCI controllers Kristen Carlson Accardi
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