Re: Linux 2.4.19-rc1-ac3

[Alan Cox]

On Sat, 2002-07-13 at 20:43, Peter Osterlund wrote:
> 1. apm idle mode consumes less power at lower frequencies

CPU halting makes a difference on older cpus but not really on modern
ones
.
> 2. The lower clock frequency means less work gets done, for example
>    because window updates become less frequent when moving windows.

Your CPU has a clock range, zero is not in that range. If you can
complete all your work within an acceptable time slice (based on
previous task histories) there is no need to run full on.

> 3. The cpu voltage is automatically reduced when the frequency is
>    reduced.

True for some x86 processors, either automatically, or on some
controlled by us.