Messages in this thread | | | Date | Mon, 10 May 1999 22:20:30 +0200 (CEST) | From | Rik van Riel <> | Subject | Re: [patch] new scheduler |
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On Mon, 10 May 1999, Greg Lindahl wrote:
> > > Its the priority recalculation in the scheduler thats the > > > bottleneck as soon as we hit 200 simultaneous processes. A MAJOR > > >bottleneck. [...] > > > > have you actually tried this? While i'm writing this email i'm also > > running 250 simultaneous CPU-hogs on 2.2.8-pre5: > > The first statement was a bit in excess of the facts. The problem > arises when the 250 processes are rescheduling themselves > frequently.
That's not even needed. With 250 sleeping process and _one_ running process at nice +19, your Linux system will recalculate the priority for all 250 processes 50 times a second.
This is a problem which I'd like to do something about.
Rik -- Open Source: you deserve to be in control of your data. +-------------------------------------------------------------------+ | Le Reseau netwerksystemen BV: http://www.reseau.nl/ | | Linux Memory Management site: http://humbolt.geo.uu.nl/Linux-MM/ | | Nederlandse Linux documentatie: http://www.nl.linux.org/ | +-------------------------------------------------------------------+
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