Messages in this thread |  | | | Date | Sat, 7 Feb 2009 11:55:45 -0800 | | From | Arjan van de Ven <> | | Subject | Re: cpu frequency maximized even for a niced job w/ v2.6.29-rc3 |
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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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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