Some feedback regarding power consumption on an older machine after enabling hpet

Yuan Chao yuanchao at gmail.com
Fri Aug 17 21:24:56 PDT 2007


On 8/18/07, Kent <kent at thor.arrrr.com> wrote:

> Rough averages of idle acpi readings with screen at half brightness...
> 2.6.22-rc5 vanilla              22W     99% C2
> 2.6.22-rc5-hrt1                 16W     99% C3 ~ 14ms avg
> 2.6.22-rc5-hrt1-radeon-vblank   14W     97% C3 ~ 140ms avg
The longer time CPU stays in C4 saves more power. It looks like for
your case CPU mostly stays in C3 and I also have similar problem. I'm
wondering if there's some patch can be applied to resolve this?


-- 
Best regards,
Yuan Chao



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