Re: Research on cpufreq for power management - please help

[Jack Malmostoso <jackmalmostoso@freesurf.ch>]

On Sat, 10 Sep 2005 20:00:15 +0200, Matthias Grimm wrote:

> I do some research on this issue to integrate CPU scaling policy into a
> future power management concept. Your help will be appreciated.

I hope I am not late :)

iBook G4, 800MHz:

jack@vasquez:~$  for i in /sys/devices/system/cpu/cpu0/*/*; do echo $i; cat $i; done
/sys/devices/system/cpu/cpu0/cpufreq/affected_cpus

0
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
cat: /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq: Permission denied
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
798720
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
606000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
798720 606000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
powersave userspace performance
/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
798720
/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver
powermac
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
userspace
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
798720
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
606000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
798720

Please note that I had to add "system" in the path. I run a 2.6.13 kernel.

jack@vasquez:~$ cat /proc/cpuinfo
processor       : 0
cpu             : 7455, altivec supported
clock           : 798MHz
revision        : 0.3 (pvr 8001 0303)
bogomips        : 804.39
machine         : PowerBook6,3
motherboard     : PowerBook6,3 MacRISC3 Power Macintosh
detected as     : 287 (iBook G4)
pmac flags      : 0000001b
L2 cache        : 256K unified
memory          : 640MB
pmac-generation : NewWorld

Thanks for your work!

-- 
Best Regards, Jack
Linux user #264449
Now on iBook!