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