On 6/25/07, Török Edvin <[EMAIL PROTECTED]> wrote:
On 6/25/07, Marc Deop i Argemí <[EMAIL PROTECTED]> wrote:
> I can't even get close to that! My lowest power consumption has been 10,8 with
> the brightness at 0 level and practically idleing! I have even disabled one
> of the cores...
>
Disabling a core actually increased power consumption. My guess is
that the core isn't really switched off, its just that no task gets
scheduled on it.
I see this comment in kernel/smpboot.c:__cpu_disable
/* Perhaps use cpufreq to drop frequency, but that could go into generic code.*/
--Edwin
Yes, disabling core(s) increases power consumption.
http://lkml.org/lkml/2007/4/7/4
On the other hand, I have compiled kernel not to support SMP on the
same box, and I got extra power saving around 1-2 W.
--
andika
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