setting CPU frequency

[Oliver Grawert]

hi,
Am Donnerstag, den 18.01.2018, 11:07 +0000 schrieb Richard Kimber:
> 
> cat /sys/devices/system/cpu/intel_pstate/max_perf_pct says '85',
> cat /proc/cpuinfo gives "cpu MHz   : 4000.016" which doesn't
> seem to be 85% of 4.4Ghz
> 
note that this is the "max percent" you are setting there ... did oyu
actually put the CPU under high load to make it go to the max (compile
a kernel or whatnot) ?

> Does /proc/cpuinfo not give the actual frequency? If not what does?
> 
it gives the actual frequency at the exact moment you issued the cat
command ... try something like:

while true; do sleep 0.1; cat /proc/cpuinfo|grep MHz; done

and you should see it go up and down with more accurate values ...

ciao
	oli
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