Re: [patch] O(1) scheduler-H6/H7 and nice +19

From: Davide Libenzi (davidel@xmailserver.org)
Date: Mon Jan 14 2002 - 20:50:41 EST


On Mon, 14 Jan 2002, Ed Tomlinson wrote:

> On January 13, 2002 10:45 pm, Davide Libenzi wrote:
> > On Sun, 13 Jan 2002, Ed Tomlinson wrote:
> > > With pre3+H7, kernel compiles still take 40% longer with a setiathome
> > > process running at nice +19. This is _not_ the case with the old
> > > scheduler.
> >
> > Did you try to set MIN_TIMESLICE to 10 ( sched.h ) ?make bzImage with setiathome running nice +19
>
> This makes things a worst - note the decreased cpu utilizaton...
>
> make bzImage 424.33s user 32.21s system 48% cpu 15:48.69 total
>
> What is this telling us?

Doh !
Did you set this ?

#define MIN_TIMESLICE (10 * HZ / 1000)

- Davide

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