Re: The ondemand CPUFreq code -- I hope the functionality stays

Miles Lane
2006-07-28T10:38:51Z

On 7/28/06, Dave Jones <davej@redhat.com> wrote:
> On Thu, Jul 27, 2006 at 09:04:23PM -0400, Patrick McFarland wrote:
>
> > I think you've gotten confused. Ondemand is a horrible governor that only
> > flips between two cpu frequencies, the lowest and the highest.
>
> That isn't true. I just double checked, and saw my core-duo changing
> between all 4 states it offers.

Yep, the ondemand governor switches between all frequencies on my
Pentium 4 M laptop. It's a HP Pavillion dv1240us.

> > Use the Conservative governor instead.
>
> This governor is based on the same code as on-demand with some subtle
> tweaks to make it not change the frequency as often. If anything *this*
> one should be less 'active' for you than ondemand.

I have tried the other governers (albeit a while ago) and found they
didn't manage power anywhere near as well as ondemand. Perhaps
results vary for each governor according to CPU and chipset.

Miles