Re: Power consumption HZ100, HZ250, HZ1000: new numbers

From: Pavel Machek
Date: Sun Jul 31 2005 - 17:49:49 EST


> > > I really like having 250HZ as an _option_, but what I don't see is why
> > > it should be the _default_. I believe this is Lee's position as
> > > Last I checked, ACPI and CPU speed scaling were not enabled by default;
> >
> > Kernel defaults are irelevant; distros change them anyway. [But we
> > probably want to enable ACPI and cpufreq by default, because that
> > matches what 99% of users will use.]
> >
> If the kernel defaults are irrelevant, then it would make more sense to
> leave the default HZ as 1000 and not to enable the cpufreq and ACPI in
> order to keep with the principle of least surprise for people who do use
> kernels.

Well, I'd say you want ACPI enabled. New machine do not even boot
without that. Default config should be usefull; set ACPI off, and
you'll not be able to even power machine down.
if you have sharp zaurus hardware you don't need... you know my address
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