powerd to use sysctl to import temps to drop freq to avoid heat crash

[Alexander Motin]

On 01/04/12 20:22, Julian H. Stacey wrote:
> Question:
>    In your
>      dev.cpu.0.freq_levels: 2400/35000 2000/28000 1600/22000 1200/16000 800/14000
>    1st numbers are frequency, what are 2nd numbers after / ?

Relative power consumption under full CPU load.

>    Presumably not voltages, as mine have such a wide span :
>      dev.cpu.0.freq_levels: 1592/100000 1393/87500 1194/75000 995/62500
>      796/35457 696/31024 597/26592 497/22160 398/17728 298/13296
>      199/8864 99/4432
>    (We should send-pr longer text to be produced by
> 	sysctl -d dev.cpu.0.freq_levels
> 		dev.cpu.0.freq_levels: CPU frequency levels
>     )

For EIST and probably PowerNow! frequencies it is relative power levels. 
But for frequencies created by throttling they are incorrect. If you 
disable throttling, you should see only "real" value.

> Question
>    "It is not recommended to set the system timer tick rate below 250 HZ and"
>     Do you mean as shown by
> 	kern.clockrate: { hz = 1000, tick = 1000,
>     Not kern.hz ?

Generally kern.hz, but for freqs below 1000Hz they are equal.

-- 
Alexander Motin