powerd broken

Alexander Motin mav at FreeBSD.org
Sun Mar 29 00:32:59 PDT 2009


Dominic Fandrey wrote:
> Since I updated to the 7.2 prerelease, powerd is broken.
> 
>> uname -a
> FreeBSD mobileKamikaze.norad 7.2-PRERELEASE FreeBSD 7.2-PRERELEASE #0: Tue Mar 24 07:57:30 CET 2009     root at mobileKamikaze.norad:/usr/obj/HP6510b/amd64/usr/src/sys/HP6510b  amd64
> 
> It increases the CPU frequency very aggressively in adaptive mode.
> That means full speed with a system load below 1%. I have to use the
> following nonsensical powerd_flags to make it work sensibly:
> -a adaptive -b minimum -i 95 -r 99
> 
> The system is a Core2 Duo, if that is of any help.

Run powerd in foreground with -v option to get it's work trace. If it 
reaches full speed, there must be some reason to do it.

Updated powerd indeed may behave a bit more aggressively (especially in 
new hiadaptive mode, default for AC power). But it was made several 
months ago and nobody have complained yet. I am personally using it on 
8-CURRENT on my Core2Duo laptop every day.

-- 
Alexander Motin


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