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From: Tom Hughes <tom@compton.nu>
To: Thomas Renninger <trenn@suse.de>
Cc: Cristiano Prisciandaro <cristiano.p@solnet.ch>,
	Dave Jones <davej@redhat.com>,
	cpufreq@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] cpufreq: eeepc 900 frequency scaling driver
Date: Fri, 05 Dec 2008 23:05:39 +0000	[thread overview]
Message-ID: <4939B3C3.8060205@compton.nu> (raw)
In-Reply-To: <200812040257.09099.trenn@suse.de>

Thomas Renninger wrote:

> The biggest problem I see with these "special" ACPI cpufreq interface is:
> Can there be Asus/eeepcs which provide these ACPI functions (maybe dummies on
> future machines?), but can still be switched via the spec conform and more 
> efficient acpi-cpufreq driver via PSS tables?

So should we tie this driver to particular DMI signature(s) then? As far 
as I know it is only useful for the Eee 900 and possibly the 701 when 
running later BIOSes.

> BTW: Have you tried out how much power (or at least battery life time) you
> win?

Running with wifi and the screen off, and the CPU busy (doing m5sum of 
/dev/zero) I get 2:37 run time at 900MHz and 3:09 at 630MHz so the 
increase in run time is about 20% on that test.

Tom

-- 
Tom Hughes (tom@compton.nu)
http://www.compton.nu/

  reply	other threads:[~2008-12-05 23:06 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-23 15:27 [PATCH 1/1] cpufreq: eeepc 900 frequency scaling driver Cristiano Prisciandaro
2008-11-23 18:04 ` Pavel Machek
2008-12-02 16:15   ` Matthew Garrett
2008-12-02 20:14     ` Pavel Machek
2009-03-16  4:24       ` Len Brown
2009-03-16  8:29         ` Pavel Machek
2009-03-17  8:30           ` Fabio Comolli
2009-03-17  8:59             ` Fabio Comolli
2008-11-24  9:38 ` Tom Hughes
2008-11-24 15:13   ` Thomas Renninger
2008-11-24 16:36     ` Thomas Renninger
2008-11-24 16:41       ` [Acpi4asus-user] " Corentin Chary
2008-11-24 16:48         ` Tom Hughes
2008-11-24 16:58           ` Corentin Chary
2008-11-24 17:07             ` Tom Hughes
2008-11-24 16:46       ` Tom Hughes
2008-11-24 23:02       ` Cristiano Prisciandaro
2009-04-05  7:43         ` [Acpi4asus-user] " Corentin Chary
2009-04-05  7:43           ` Corentin Chary
2009-04-05 10:20           ` Matthew Garrett
2009-04-05 11:39             ` Grigori Goronzy
2008-11-24 16:39     ` Tom Hughes
2008-11-24 19:09   ` Cristiano Prisciandaro
2008-12-03 19:26   ` Tom Hughes
2008-12-04  1:57     ` Thomas Renninger
2008-12-05 23:05       ` Tom Hughes [this message]
2008-12-06 16:35         ` Matthew Garrett
2008-12-07 15:55           ` Tom Hughes
2008-12-09 12:36             ` Pavel Machek

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