misc/140361: speed-stepping broken on PhenomII (acpi?)
Hannes
freebsd at soulrebel.in-berlin.de
Sat Nov 7 15:20:02 UTC 2009
>Number: 140361
>Category: misc
>Synopsis: speed-stepping broken on PhenomII (acpi?)
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sat Nov 07 15:20:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator: Hannes
>Release: FreeBSD 8-RC2
>Organization:
>Environment:
FreeBSD fbsdmain.lan.home 8.0-RC1 FreeBSD 8.0-RC1 #0: Thu Sep 17 18:50:57 UTC 2009 root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
I have a new AMD PhenomII X4 (3.0Ghz) CPU. However powerd doesn't automatically reduce the freq.
I suppose this is due to the CPU-Load being incorrectly detected:
> sysctl -a | grep usage
dev.cpu.0.cx_usage: 100.00% last 500us
dev.cpu.1.cx_usage: 100.00% last 500us
dev.cpu.2.cx_usage: 100.00% last 500us
dev.cpu.3.cx_usage: 100.00% last 500us
(these are always 100% although system is mostly idle)
I would really like to be able to reduce freq, for energy, noise/heat and long--livety reasons!
Thank you very much!
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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