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

[Klaus Cucinauomo]

> Am 19.03.2021 um 21:58 schrieb Klaus Cucinauomo <maciphone2 at googlemail.com>:
> 
> 
>>> 
>>>>> Am 19.03.2021 um 18:43 schrieb bob prohaska <fbsd at www.zefox.net>:
>>>> 
>> I've enabled powerd and rebooted, console messages report that powerd
>> started with no explicit errors. A -j4 buildworld is running now.
>> 
>> Should I expect to see powerd mess up the default mini-uart serial console?
>> So far, it hasn't with top reporting less than 1% idle. That's confusing....
>> 
>> Thanks for writing!
>> 
>> bob prohaska
> 
> normally shouldn‘t mess up the console....
> sysctl dev.cpu.0.freq  ... cpu.1.freq etc.
> prints the current freq
> 
> -j4 shown c++ with ‚top‘ should 
> run @ approx. 97% CPU-usage while ‚make‘ uses bit less 
> Regards
> 
> K.
> 
of course ‚sysctl dev.cpu.0.freq ‚ while ‚make -j4‘ is running,
 so via ssh or you  can use the  ‚screen‘ tool

K.
>