From: "Toralf Förster" <toralf.foerster@gmx.de>
To: Arjan van de Ven <arjan@infradead.org>
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 21:48:19 +0100 [thread overview]
Message-ID: <200902072148.19953.toralf.foerster@gmx.de> (raw)
In-Reply-To: <20090207115545.724911be@infradead.org>
At Saturday 07 February 2009 20:55:45 Arjan van de Ven wrote :
> 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...
Oh - maybe I for got to mention that I set ./ondemand/ignore_nice_load to "1"
--
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3
prev parent reply other threads:[~2009-02-07 20:48 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
2009-02-07 20:48 ` Toralf Förster [this message]
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