Re: Debian on the Desktop - plans for Lenny?
> Except that a PowerPC processor (as found in Gustavo's ibook) simply
> doesn't *have* C states. On my PowerBook G4, I noticed that when I
> started running this crude hack...
> modprobe cpufreq_userspace
> echo $$ > /var/run/mycpufreqd
> echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
I suspect you will get almost the same behavior by using this hack and
leaving it to the kernel to scale it:
echo $$ > /var/run/mycpufreqd
echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
It will jump to the highest frequency when the load is high, and drop
to the lowest frequency when there is less load.
See for example
<URL: http://www.mjmwired.net/kernel/Documentation/cpu-freq/governors.txt >
for documentation on the various governors.