Messages in this thread | | | Date | Tue, 13 Apr 1999 15:27:26 +0200 (CEST) | From | Rik van Riel <> | Subject | Re: [PATCH] small scheduling optimization |
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On Tue, 13 Apr 1999, Ingo Molnar wrote: > On Sun, 11 Apr 1999, Rik van Riel wrote: > > > This second patch is just a small optimization to the code calling > > the scheduling code. With a program like rc5des running (nice +19) > > in the background and NOTHING in the foreground Linux still goes > > through the scheduler 50 times a second! > > hm, it should only go 5 times a second into the scheduler if this is > the only process running. Are you sure that it's 50 times a second?
A nice +19 process only has a timeslice of 10 (20 if it's alone) milliseconds. That will give 50 reschedules and a lot of cache corruption per second...
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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