linux-kernel - Re: [patch 0/3] AHCI Link Power Management

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Date:	Wed, 13 Jun 2007 14:56:55 +0000
From:	Pavel Machek <pavel@....cz>
To:	Tejun Heo <htejun@...il.com>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	Kristen Carlson Accardi <kristen.c.accardi@...el.com>,
	jeff@...zik.org, james.bottomley@...eleye.com,
	linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, Jens Axboe <jens.axboe@...cle.com>
Subject: Re: [patch 0/3] AHCI Link Power Management

Hi!

> >> I'm not sure about this.  We need better PM framework to support 
> >> powersaving in other controllers and some ahcis don't save much
> >> when only link power management is used,
> > 
> > do you have data to support this?
> 
> Yeah, it was some Lenovo notebook.  Pavel is more familiar with the
> hardware.  Pavel, what was the notebook which didn't save much power
> with standard SATA power save but needed port to be completely turned off?

Uhuh, now I understand why Arjan wanted me to test.

But I have same hw as Kristen, so I assume there must have been
something wrong with the old tests.

Sorry for confusion.
							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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