Re: Kernel thoughts of a Linux user

Paulo Marques
2004-11-19T12:28:50Z

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)