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Re: Scaling governor via sysctl?



"Tilo Schwarz" <tilo@tilo-schwarz.de> writes:

> On Fri, 29 Jan 2010 23:26:40 +0100, Carl Johnson <carlj@peak.org> wrote:
>
>> "Tilo Schwarz" <tilo@tilo-schwarz.de> writes:
>>
>>> On Thu, 28 Jan 2010 05:42:13 +0100, Todd A. Jacobs
>>> <nospam@codegnome.org>  wrote:
>>>
>>>> I'd like to set my scaling governor in /etc/sysctl.conf, rather than by
>>>> echoing a value to:
>>>>
>>>>     /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>>>>
>>>> However, I'm not finding a key for it via the sysctl utility. When I
>>>> run:
>>>>
>>>>     sysctl -a | fgrep -i cpu
>>>>
>>>> I get nothing. Why can I write to a value in sysfs that can't be
>>>> accessed with sysctl? And more importantly, how am I supposed to
>>>> do  this
>>>> at boot without sysctl.conf?
>>>>
>>>
>>> I use sysfs.conf:
>>>
>>> #grep demand /etc/sysfs.conf
>>> devices/system/cpu/cpu0/cpufreq/scaling_governor = ondemand
>>
>> If you have the cpufrequtils package installed, then just edit
>> /etc/defaults/cpufrequtils to specify which you want at boot.
>
> I don't have the cpufrequtils package installed.

The cpufrequtils package adds programs which directly set
(cpufreq-set) and check (cpufreq-info) the frequency and drivers, so
you don't need to use the /sys filesystem manually.
-- 
Carl Johnson		carlj@peak.org


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