Re: ondemand cpufreq ineffective in 2.6.12 ?

Lee Revell
2005-07-12T15:01:05Z

On Tue, 2005-07-12 at 21:52 +1000, Con Kolivas wrote:
> > Well, it's just the default settings of the kernel which has changed. If
> > you want the old behaviour, you can use (with your admin hat):
> > echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice
> > IMHO it seems quite fair, if you have a process nice'd to 10 it probably
> > means you are not in a hurry.
>
> That's not necessarily true. Most people use 'nice' to have the cpu bound task
> not affect their foreground applications, _not_ because they don't care how
> long they take.

But the scheduler should do this on its own! If people are having to
renice kernel compiles to maintain decent interactive performance (and
yes, I have to do the same thing sometimes) the scheduler is BROKEN,
period.

Lee