On 10/07/2015 02:51 AM, Doug Smythies wrote:
> > And before patch I get, using primitives and not cpupower: > Executive Summary: Everything works fine (or at least as I thought it was > supposed to). > > root@s15:/home/doug/temp# grep . > /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor:powersave > ... > /sys/devices/system/cpu/cpu7/cpufreq/scaling_governor:powersave > root@s15:/home/doug/temp# grep . /sys/devices/system/cpu/intel_pstate/*_perf_* > /sys/devices/system/cpu/intel_pstate/max_perf_pct:100 > /sys/devices/system/cpu/intel_pstate/min_perf_pct:42 > root@s15:/home/doug/temp# echo 50 > > /sys/devices/system/cpu/intel_pstate/min_perf_pct > root@s15:/home/doug/temp# echo 80 > > /sys/devices/system/cpu/intel_pstate/max_perf_pct > root@s15:/home/doug/temp# grep . /sys/devices/system/cpu/intel_pstate/*_perf_* > /sys/devices/system/cpu/intel_pstate/max_perf_pct:80 > /sys/devices/system/cpu/intel_pstate/min_perf_pct:50 > root@s15:/home/doug/temp# for file in > /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do echo "performance" > > $file; done > root@s15:/home/doug/temp# grep . /sys/devices/system/cpu/intel_pstate/*_perf_* > /sys/devices/system/cpu/intel_pstate/max_perf_pct:100 > /sys/devices/system/cpu/intel_pstate/min_perf_pct:100 > root@s15:/home/doug/temp# grep . > /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor:performance The switch has to be from performance to powersave. Switch again and you'll see the problem. I can also reproduce this without using 'cpupower'. P. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
