[issue754] Please enable cpu frequency scaling on all hardware by default

[Michael Prokop]

Michael Prokop <mika at grml.org> added the comment:

* Andras Korn <bts at bts.grml.org> [20091030 00:34]:

> > Grml has it's mechanisms to load the cpufreq drivers, but activates
> > it only if a laptop has been detected. Is your system a laptop?

> Oh. No, no laptop; but why not save power on all computers by default? It's good
> for the environment, generates less heat etc. etc.

> With the ondemand governor, and for (my :) typical uses of grml, the performance
> loss is negligible.

We had some annoying problems with performance when using
cpufrequency scaling on non-mobile systems in the past.

> > Does running 'Start loadcpufreq' (corresponds with
> > '/etc/init.d/loadcpufreq start') address your issue?

> Probably; I didn't know of this script, but will try it the next time I boot
> grml somewhere. So far I just modprobed and echoed away (zsh makes it so easy
> even when you have many cores - echo ondemand >/sys/**/scaling_governor :).

:)

> My wish then is for cpu frequency scaling to be enabled by default when possible
> (maybe except if inhibited on the kernel command line).

Ok, we will investigate on that and check whether enabling
cpufrequency by default would be an option for the upcoming
releases.

Thanks for your input.

regards,
-mika-

----------
messages: 2600, 2602, 2604, 2605
nosy: korn
priority: wish
status: chatting
title: Please enable cpu frequency scaling on all hardware by default

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GRML issue tracker <bts at bts.grml.org>
<http://bts.grml.org/grml/issue754>
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