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carbolymer

Member

Registered: 2012-04-25

Posts: 42

Cpupower not setting governor

Hi.

I'm having issues with the cpupower, there is no difference in the CPU speed when I am changing governor between performance and powersave: the CPU frequency is always ~2,80GHz. I can lower down the frequency in this way:

/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq

but the cpufreq seem to not work.
Here is some output:

# cpupower frequency-info
analyzing CPU 0:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency:  Cannot determine or is not supported.
  hardware limits: 800 MHz - 3.80 GHz
  available cpufreq governors: performance powersave
  current policy: frequency should be within 800 MHz and 3.80 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
  current CPU frequency: 2.80 GHz (asserted by call to hardware)
  boost state support:
    Supported: yes
    Active: yes

cat /proc/cpuinfo

Does anyone have idea what is wrong? I'd like to be able to change the governor to throttle down the CPU speed when it is not required.

more  /sys/devices/system/cpu/cpu0/cpufreq/* | cat   
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/affected_cpus
::::::::::::::
0
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
::::::::::::::
2800000
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
::::::::::::::
3800000
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
::::::::::::::
800000
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency
::::::::::::::
4294967295
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/related_cpus
::::::::::::::
0
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
::::::::::::::
performance powersave
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
::::::::::::::
2800000
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver
::::::::::::::
intel_pstate
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
::::::::::::::
powersave
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
::::::::::::::
3800000
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
::::::::::::::
800000
::::::::::::::
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
::::::::::::::
<unsupported>

Last edited by carbolymer (2016-08-15 13:03:07)

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,601

Website

Re: Cpupower not setting governor

Please search before posting... This is hpbeen covered in several threads and bug reports.

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