Date: Thu, 12 Jan 2006 11:39:58 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Mike Jakubik <mikej@rogers.com> Cc: freebsd-stable@freebsd.org Subject: Re: powerd effectiveness Message-ID: <43C6400E.2030203@infracaninophile.co.uk> In-Reply-To: <43C5F328.4030507@rogers.com> References: <43C5A261.1020407@rogers.com> <200601121554.55657.doconnor@gsoft.com.au> <43C5EAB0.3090805@rogers.com> <200601121635.09835.doconnor@gsoft.com.au> <43C5F328.4030507@rogers.com>
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Mike Jakubik wrote:
> Daniel O'Connor wrote:
>
>> Wow, that's weird, wish my AMD would do speeds like that :)
>>
>> As for your temperature observation - I have no idea sorry. It would
>> appear that powerd is doing the right thing but for some reason your
>> CPU is not benefiting. That said checking by measuring temperature is
>> fraught with complexity because there is probably a significant delay
>> between a change in power consumption and a corresponding chaange in
>> heatsink temperature.
>>
>
>
> Actually, i took readings from the wrong box :P
>
> CPU: AMD Athlon(tm) Processor (1210.79-MHz 686-class CPU)
> acpi0: <ASUS A7V> on motherboard
>
> root@mail:~# sysctl dev.cpu.
> dev.cpu.0.%desc: ACPI CPU
> dev.cpu.0.%driver: cpu
> dev.cpu.0.%location: handle=\_PR_.CPU0
> dev.cpu.0.%pnpinfo: _HID=none _UID=0
> dev.cpu.0.%parent: acpi0
> dev.cpu.0.freq: 75
> dev.cpu.0.freq_levels: 1215/-1 1139/-1 1063/-1 987/-1 911/-1 835/-1
> 759/-1 683/-1 607/-1 531/-1 455/-1 379/-1 303/-1 227/-1 151/-1 75/-1
>
> Thats the correct one, it is 75mhz. I was suspecting hardwares
> limitations in terms of modulating the frequency quickly enough. Just
> wanted to make sure.
Only vaguely apropos, but take a look at sysutils/fvcool which can
help reduce the power consumption on Athlons quite effectively.
Cheers,
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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