RPI4 clock speeds and serial port ( temperatures idle and -j4 buildworld buildkernel )

[Klaus Küchemann]

> Am 19.03.2021 um 18:43 schrieb bob prohaska <fbsd at www.zefox.net>:
> 
> 
> So my figures (~17 hours) seem reasonable for a default clocking.
> I thought maybe I'd done something wrong.


17 hours sounds too long, you can simply enable ‚powerd‘ in rc.conf for automatically 
scaling from idle 600 to max. 1500 (non overclocked).
So, when you hit make -j4 xyz, you will see all cpus running @~100% and 
Powerd will then automatically set the clock speed  to 1500 on all 4. 

K.