From: Arjan van de Ven <arjan@infradead.org>
To: "Toralf Förster" <toralf.foerster@gmx.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: cpu frequency maximized even for a niced job w/ v2.6.29-rc3
Date: Sat, 7 Feb 2009 11:55:45 -0800 [thread overview]
Message-ID: <20090207115545.724911be@infradead.org> (raw)
In-Reply-To: <200902071130.10463.toralf.foerster@gmx.de>
On Sat, 7 Feb 2009 11:30:10 +0100
Toralf Förster <toralf.foerster@gmx.de> wrote:
> I'm wondering, why my ThinkPad T41 goes from 600 MHz to 1.7 GHz if I
> run this job :
>
> $> while [[ true ]]; do nice -3 factor 273244676154386297; done
>
> under v2.6.29-rc3-562-geda58a8.
>
> Former version stays at min frequency (600 MHz).
The kernel has defaulted to this for I think a really long time;
maybe your "former version" was a distribution kernel with patches?
Either way this is a simple tunable in sysfs; and to be honest,
going to the full speed is very often the right behavior so as a
default it is quite sane...
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2009-02-07 19:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-07 10:30 Toralf Förster
2009-02-07 19:55 ` Arjan van de Ven [this message]
2009-02-07 20:48 ` Toralf Förster
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