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SubjectRe: cpufreq default governor
On 24/04/07, William Heimbigner <icxcnika@mar.tar.cc> wrote:
> On Tue, 24 Apr 2007, Michal Piotrowski wrote:
>
> > On 24/04/07, William Heimbigner <icxcnika@mar.tar.cc> wrote:
> >> On Tue, 24 Apr 2007, Michal Piotrowski wrote:
> >>
> >> > Hi William,
> >> >
> >> > On 24/04/07, William Heimbigner <icxcnika@mar.tar.cc> wrote:
> >> > > Question: is there some reason that kconfig does not allow for
> >> > > default
> >> > > governors of conservative/ondemand/powersave?
> >> >
> >> > Performance?
> >> >
> >> > > I'm not aware of any reason why one of those governors could not be
> >> > > used
> >> > > as default.
> >> >
> >> > My hardware doesn't work properly with ondemand governor. I hear
> >> > strange noises when frequency is changed.
> >> >
> >>
> >> That doesn't mean it isn't working, though.
> >
> > I didn't say that cpufreq ondemand is broken. It's a hardware problem.
> >
> >> I here weird noises if the cpu
> >> is clocked anywhere from 333MHz to 1GHz (sounds like an RD-D2 beeping
> >> noises in ultra high pitch?)
> >
> > Yes, something like that.
>
> Is it actually "not working" though, even at the hardware level?

It works, but for me this sounds are very weird ;)

> To my
> knowledge those noises are normal, and aren't even signs of a harware
> problem. I believe it is the natural result of changing frequencies at any
> time. If you change frequencies, especially in the low end of available
> frequencies, you should hear a very brief noise. A governor such as
> ondemand, which is rapidly switching the frequency from say, 333 MHz to
> 2.66 GHz, is likely to make this much more noticable.

Ok, it might be normal behavior. I might be wrong, but IMO users
prefer speed and no strange sounds as default setting.

>
> William Heimbigner
> icxcnika@mar.tar.cc
>

Regards,
Michal

--
Michal K. K. Piotrowski
LTG - Linux Testers Group (PL)
(http://www.stardust.webpages.pl/ltg/)
LTG - Linux Testers Group (EN)
(http://www.stardust.webpages.pl/linux_testers_group_en/)
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