Update on DeviceKit

[Bill Nottingham]

Holger Macht (hmacht at suse.de) said: 
> > The idea that CPUs have a power/performance tradeoff is basically 
> > untrue. The best power saving is obtained in a configuration that also 
> > gives you the best performance. Reducing performance increases overall 
> > power usage, which means it's certainly not something you want to do 
> > when you're on battery.
> 
> With you're argumentation being true, it wouldn't make sense to have
> something like an ondemand governor at all. Not to mention having an
> up_threshold exported to userspace. Just always run at full speed.

Um, no. You clock down the processor for lower power usage *when
it's not doing anything*. It's just that if you are doing something,
you want to be running full speed for a shorter timeframe, rather
than lower speed for a longer timeframe.

Bill