Re: Systems running hot?

On Dec 20, 2009, at 8:39 AM, Michal Varga wrote:

> Sorry to hijack the thread, but I'm curious - is anybody running
> powerd/throttling on a Phenom-based CPU?
> 
> I see cpufreq attaching normally on /AMD Athlon(tm) 64 X2 Dual Core
> Processor 3600+ (2004.56-MHz 686-class CPU)/:
> 
> But not so on much newer /AMD Phenom(tm) 8450 Triple-Core Processor
> (2109.74-MHz 686-class CPU)/:
> 
> # kldload -v cpufreq
> Loaded cpufreq, id=23
> 
>> From the offending Phenom:
> # sysctl dev.cpu.0.
> dev.cpu.0.%desc: ACPI CPU
> dev.cpu.0.%driver: cpu
> dev.cpu.0.%location: handle=\_PR_.C000
> dev.cpu.0.%pnpinfo: _HID=none _UID=0
> dev.cpu.0.%parent: acpi0
> dev.cpu.0.cx_supported: C1/0
> dev.cpu.0.cx_lowest: C1
> dev.cpu.0.cx_usage: 100.00% last 500us
> dev.cpu.0.temperature: 27.5C
> 
> This is from latest 7.2. Were there any changes in 8/9-CURRENT to
> bring some love to Phenoms too?

I have little to no experience with power saving in *nix, but have you made sure the BIOS settings support throttling etc.?

Regards,
Thomas