Am Sonntag, 15. März 2009 schrieb Carlos E. R.:
Content-ID:
On Sunday, 2009-03-15 at 15:52 +0100, Jan Ritzerfeld wrote:
Am Samstag, 14. März 2009 schrieb Carlos E. R.: [...].
Anyhow, if I have to leave the computer on for other things, it doesn't matter how long it takes. [...].
JFYI, such a strategy increases power consumption, AFAIK.
No, I don't think so.
Well, this is true for my idea of putting your CPU into powersave mode, at least on Intel hardware and according to Arjan van de Ven: | it's better to execute the code you need to execute at full speed, and | then really quickly go idle, than it is to execute at a much lower speed. http://www.bughost.org/pipermail/power/2007-May/000166.html | it's more energy efficient to go to max fast and get the work done (and | then go to idle), than it is to go to medium speeds and be less idle http://www.bughost.org/pipermail/power/2007-May/000071.html
If you need to leave the computer running 24/7 for some other reason, like it is a server of some kind, then it can be also running a heavy task; in this case, it makes sense to make this task run with, say max 50% cpu, in order not to heat the cpu more than needed.
This will limit the noise level, and that is what you want. :)
If the computer doesn't need to be up, then it makes sense to finish as fast as possible.
The same holds true for CPUs that support frequency scaling, because in idle mode they consume much less power than than in lower speed mode. Search the web for race-to-idle. Gruß Jan -- Some men are alive simply because it is against the law to kill them. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org