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

From: Miles Lane
Date: Fri Jul 28 2006 - 06:36:46 EST

On 7/28/06, Dave Jones <davej@xxxxxxxxxx> 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.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at