Comments on: Green PCs: CPU frequency scaling in Linux

By: Richard

Richard — Tue, 16 Jun 2009 12:30:16 +0000

I have a Pentium D 3GHz. The ondemand governor scales it down to 2.4GHz when it’s idle. Should the CPU drop any lower than 2.4GHz, or is this right for this Pentium D model?

Cheers,
Rich

By: Vladimir Kotal

Vladimir Kotal — Sat, 17 Jan 2009 15:20:34 +0000

In Fedora 10, it is sufficient to enable “cpuspeed” service. Works nicely on AMD Athlon X2 (4850e).

By: response

response — Tue, 22 Apr 2008 22:11:32 +0000

“out of the box” is an expression, it means that it does not require any additional installations or setup for it to do that specific task

By: dara

dara — Tue, 22 Apr 2008 08:20:14 +0000

simply add cpufrequtils as a startup service. rcconf may come handy to configure this.

cheers

dara

By: rastos

rastos — Tue, 22 Apr 2008 07:47:47 +0000

When using KDE you can watch (though not change) the currently selected frequency in “Performence Monitor” aka ksysguard. Ksysguard also comes with “System Guard” applet on kicker panel that can be configured to show the frequency.

By: emanuele

emanuele — Tue, 22 Apr 2008 06:43:43 +0000

Hi, debian testing user here.
Thus stuff works great, but only as long as I don’t reboot.
How can I keep it working for evey session?

thanks a lot
cheers

By: shabakeh

shabakeh — Mon, 21 Apr 2008 21:06:56 +0000

what does “box” mean? because you said Fedora 7 should have CPU scaling working out of box.

By: enteon

enteon — Mon, 21 Apr 2008 20:09:17 +0000

If you were crunching, you didn’t have to think about such things like clock scaling (except for upward scaling - hehe). I think crunching for a useful purpose makes my PC even more energy efficient than choosing a good PSU ever could. Just think about what we can achieve if every OS was crunching by default

Please, have a look at: http://www.worldcommunitygrid.org/