RPi and powerd, was: Re: RPI4 clock speeds and serial port ( temperatures idle and -j4 buildworld buildkernel )

Klaus Küchemann maciphone2 at googlemail.com
Sun Mar 21 20:27:50 UTC 2021



> Am 21.03.2021 um 19:13 schrieb bob prohaska <fbsd at www.zefox.net>:
> 
> There was an effect from powerd on the Pi2, but only
> 600MHz > 900MHz. The Pi3 went from 600 to 1200, the
> Pi4 600 to 1500.

yes, these are the default max. (non overclocked) values (900 Pi2/1200 Pi3/ 1500 Pi4).



> Am 21.03.2021 um 19:13 schrieb bob prohaska <fbsd at www.zefox.net>:
> 
> 
> I always thought of powerd as a complication inflicted to
> conserve battery life. I had no idea it could be used for
> performance enhancement. Thank you, Klaus!
> 
> bob prohaska
> 

`happy to hear it works for you.
Yes, the good thing is :
e.g., for e.g. battery/electricity Pi4 goes automatically  back to 600 if cpu-power is no more needed(after make buildworld buildkernel ).

Regards

K.



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