Re: [PATCH] cpufreq_ondemand

[Andre Eisenbach <int2str@gmail.com>]

On Mon, 18 Oct 2004 08:35:49 +1000, Con Kolivas <kernel@kolivas.org> wrote:
> I'd much prefer it shot up to 100% or else every time the cpu usage went
> up there'd be an obvious lag till the machine ran at it's capable speed.
>   I very much doubt the small amount of time it spent at 100% speed with
> the default design would decrease the battery life significantly as well.

I like Alexanders idea better and will give it a good try. If the
speed steps down slowly but shoots up 100% quickly (as it is right
now), even a small task (like opening a folder, or scrolling down in a
document) will cause a tiny spike to 100% which takes a while to go
back down. The result is that the CPU spends most of it's time at 100%
or calming down. I wrote a small test program on my notebook which
confirms this.

It's either or. Either you go up AND down slowly (which I would
prefer), or you go up and down immediately. But spiking up and slowly
going back down is not a good combo.

Alex has my vote, even so I have to give if some more testing.

Cheers,
    Andre