Re: Research on cpufreq for power management - please help
On 9/10/05, Matthias Grimm <matthiasgrimm@users.sourceforge.net> wrote:
>
> Hi,
> I need some information from machines with scalable CPU frequency.
> Could you please send me the contents of /sys/devices/cpu/cpu0/* ?
> The following line may help you with this
>
> for i in /sys/devices/cpu/cpu0/*/*; do echo $i; cat $i; done
>
-----------------------------------------
# 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
599999
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
1199999
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
599999
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
1199999 599999
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
powersave userspace performance
/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
599999
/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
1199999
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
599999
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
599999
/sys/devices/system/cpu/cpu0/cpufreq/stats
cat: /sys/devices/system/cpu/cpu0/cpufreq/stats: Is a directory
-----------------------------------------------
-----------------------------------------------
# for i in /sys/devices/system/cpu/cpu0/*/*/*; do echo $i; cat $i; done
/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state
1199999 214407
599999 1646240
/sys/devices/system/cpu/cpu0/cpufreq/stats/total_trans
305
/sys/devices/system/cpu/cpu0/cpufreq/stats/trans_table
From : To
: 1199999 599999
1199999: 0 153
599999: 152 0
-----------------------------------------------------
Bin
> I do some research on this issue to integrate CPU scaling policy into a
> future power management concept. Your help will be appreciated.
>
> Best Regrads
> Matthias
>
>
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