Re: powerd forgets top CPU frequency ?

On Sun, 25 Aug 2024 08:40:19 +0000
"Poul-Henning Kamp" <phk@phk.freebsd.dk> wrote:

> --------
> Ronald Klop writes:
> 
> > This is interesting by itself. According to the sysctl the CPU only has 1 frequency to select, which is 2803, but it is running on 3103. Maybe there is some 
> 
> Yes, I've always had a bit of trouble understanding how these things fit together...
> 
> (Also not the best laptop I've had in a number of other ways)

 You likely have hwpstate, so powerd will do nothing.
 Try changing dev.hwpstate_intel.<CPU>.epp value and see if you
manage to do what you want, otherwise you will need to disable hwpstate
(it's doable with some hints iirc) and use powerd.

 Cheers,

> > other mechanism which influences the CPU freq on your machine. I hope somebody else can shine some light on this.
> > Doesn't the output (or source) of powerd give some insight on why it makes the decisions it makes?
> 
> Only stuff like:
> 
> 	load 144%, current freq 3692 MHz ( 0), wanted freq 5606 MHz
> 	load 127%, current freq 3692 MHz ( 0), wanted freq 5606 MHz
> 	load 120%, current freq 3692 MHz ( 0), wanted freq 5606 MHz
> 	load 136%, current freq 3692 MHz ( 0), wanted freq 5606 MHz
> 	load 132%, current freq 3692 MHz ( 0), wanted freq 5606 MHz
> 
> But it is not entirely obvious to me that powerd actually does anything...
> 
> 
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk@FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe    
> Never attribute to malice what can adequately be explained by incompetence.
> 


-- 
Emmanuel Vadot <manu@bidouilliste.com> <manu@freebsd.org>