reducing power usage of Fedora - how you can help!

[dragoran]

On 8/14/07, Chuck Ebbert <cebbert at redhat.com> wrote:
>
> On 08/14/2007 04:39 AM, dragoran wrote:
> > On my laptop (core2duo based) S06cpuspeed causes 100 wakeups/sec .
> > Seems like its already noted here:
> > http://linuxpowertop.org/known.php#ondemand
> > "Intel fixed this and the patches to the kernel to effectively remove
> > this timer are included in Linus' tree as of 2.6.22-rc1." I am running
> > 2.6.22.1-41.fc7 which should already have this changes but it seems the
> > problem isn't solved yet.
> > doing the suggested
> > "
> > cd /sys/devices/system/cpu/cpu0/cpufreq
> >
> > cat ondemand/sampling_rate_max > ondemand/sampling_rate
> > "
> > does fix the wakeups (S06cpuspeed) is no longer on the list .. but it
> > takes some seconds for the cpu to change pstate running glxgears 2-3
> > seconds later cpu goes to 2.17ghz closing it I have to wait other 2-3
> > second to be back at 1ghz
> > without the "fix" it does this almost immediately.
> > any idea how this can be fixed?
> >
>
> What governor is it using? If it's "ondemand" I don't see why cpuspeed
> should even be running at all.


yes its ondemand.
but in the config its just GOVERNOR=


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