Re: Scaling governors in 14.1 stock kernel

On Wed, Nov 13, 2013 at 12:59:14PM +0000, David Woodfall wrote:
> Mine are 100, 57, 0
> 
> >If you echo performance to scaling_governor, then the three files
> >above contain 100, 100, and 0. The default (powersave) has a lower
> >minimum P state, so it can lower the frequency.
> 
> So powersave is the default now?
> 

I guess it's just for compatibility that
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor tells you
"powersave". What it means is what you saw, that your machine runs
using between 57 and 100 percent of the available performance.
The old meaning of powersave was to run at the minimum frequency. If
you wanted THAT, you could

echo 57 > /sys/devices/system/cpu/intel_pstate/max_perf_pct

and then you would run at low performance all the time.

You could say that the default now is about the same as the old
"ondemand", that the system changes dynamically between a low
percentage and 100 % of performance.