#5 Configureable governor support

[BeatRyder]

Would it be possible to add configurable governor
support?

I would like to use the conservative governor instead
of the ondemand governor for the Dynamic scheme.

I have created a patch to make it more configurable
now, how ever it requires recompiling each time you
ant to change the setting.

I dont know much about c++ so it is probably not the
prettiest code I have ever written

[BeatRyder]

Conservative governor patch

[Stefan Seyfried]

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We can probably add it, but it is not as easy since the
governors need configuration and conservative probably is
different from ondemand in its options.

I'll discuss this with Holger and we will have a look at it
for future versions.

But what bothers me more: do you really have big problems
with ondemand? if yes, what cpufreq driver are you using
and what processor type? Our ondemand config is actually
very "conservative" already since it does only 3 switches
per second and switches up only if the cpu freq is higher
than 80 percent.

My machines also stay at intermediate frequencies if i e.g.
watch a DVD they switch from 600 to 1000Mhz and stay there,
but never switch to 1700MHz (the maximum of this
processor).
Since this works very fine for me from a power saving point
of view, i never deemed the conservative governor support
as being very urgent.
If you have a different experience, this might help
convincing me that conservative support is more important
than i have thought ;-)

[BeatRyder]

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I dont have *problems* per say with the ondemand governor.
I like the conservative due to the fact that it is all
kernel level control. As in "set it and forget it". Up
until I found Kpowersave, I was just using a acpid script
and cpufreq-utils to change the governors, and set the
conservative to ingore nice. I dont like the ondemand
governor because ( at least on my centrino) it will not use
any of the mid range speeds. Thus nearly defeating the
purpose of having speedstep.

Now that I have found Kpowersave, and love it, I would just
like some additional support.

I am using Gentoo right now, and have built an ebuild to
apply that patch, it works for the most part, but as all I
do is replace all instances of "ondemand" with
"conservative" (not in function names) it seems a tad
buggy. :p

If you would like to email me to discuss this further, you
can contact me at:

beat (dot) ryder (at) gmail (dot) com

[Bernd Buschinski]

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I think it would be the best way if powersave read
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
and let the user choose between all avaiable governors

if possible in kpowersave NOT translated
or optional translated

I believe there are words that can/should not be translated

[Nobody/Anonymous]

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I too would like to use the conservative governor, thx