Re: [intel-pstate driver regression] processor frequency very high even if in idle

[Srinivas Pandruvada]

On Sat, 2016-04-02 at 08:30 +0200, Sedat Dilek wrote:
> > I am trying CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y from
> > linux-pm.git#linux-next out of curiosity...
> > 
> > $ ./scripts/diffconfig /boot/config-$(uname -r) .config
> > ÂCPU_FREQ_DEFAULT_GOV_PERFORMANCE y -> n
> > +CPU_FREQ_DEFAULT_GOV_SCHEDUTIL y
> > +CPU_FREQ_GOV_ATTR_SET y
> > +CPU_FREQ_GOV_SCHEDUTIL y
> > 
> > ...will report.
> > 
> 
> Not sure why I see here "powersave".
> Does Intel-PState driver not support CPU_FREQ_GOV_SCHEDUTIL?
> 
> $ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver
> intel_pstate
> intel_pstate
> intel_pstate
> intel_pstate
> 
> $ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
> powersave
> powersave
> powersave
> powersave

If you are using Ubuntu, the OS has a script which will automatically
change from performance.
Doug can give more information on this script.

Thanks,
Srinivas



> 
> See also attached files.
> 
> - sed@ -