CPU frequency control

Lyndon Drake lyndon at arotau.com
Tue Mar 8 09:12:44 UTC 2005

On Mon, 2005-03-07 at 11:37 -0800, Ryan Thiessen wrote:
> On Mon, 07 Mar 2005 19:34:14 +0100, Hervé Cauwelier
> > So powerscaling is functionning properly. You should be happy. :-)
> No, it's not functioning properly, it's causing severe lag that makes
> Gnome feel unusable.  I've had the exact same results as Lyndon after
> moving to hoary and have reported it to bugzilla.  Watch my bug report
> at https://bugzilla.ubuntu.com/show_bug.cgi?id=7259 to see if anything
> is found on this.

The power scaling was kicking in far too quickly (taking the PC down to
300MHz in under a minute, I think), and then not picking up quickly
enough when it needed to.  The big benefit was that the machine was
running almost silently as the fans were switched off most of the time.

This was all with powernowd - switching back to cpufreqd results in the
processor never having its frequency scaled.

Maybe someone can come up with a better powernowd profile?


Lyndon Drake <lyndon at arotau.com>

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