Re: Kernel thoughts of a Linux user

[Paulo Marques]

Jan Engelhardt wrote:
> > > So they could make themselves a favor and run something like seti@home.
> >
> > That does consume more energy than just sitting at idle.  I've seen some
> > estimates of how much it costs to run seti 24/7 rather than just sit idle, and
> > the price was something like $80/year.
>
>
> For CPUs which don't have some sort of speedstep, it does not matter.
> (Please correct me if I am wrong. It might be that HLT cycles are still more
> power-conservative even without speedstep than 24/7 on the FPU.)

You're wrong :)

Nowadays the power consumption of a CPU is more than the rest of the 
machine altogether (including hard disks, etc.).

On my P4 2.8GHz HT CPU, I've measured the power consumed by *the entire 
computer* more than doubling as the processor went from idle into 100% 
load.

Of course, this doesn't include a monster 3D card, is it could very well 
consume something close to the processor when doing a lot of 3D operations.

--
Paulo Marques - www.grupopie.com

All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke (1729 - 1797)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/