Messages in this thread | | | Date | Thu, 6 May 1999 09:32:39 +0200 (CEST) | From | Rik van Riel <> | Subject | Re: Overscheduling DOES happen with high web server load. |
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On Thu, 6 May 1999, Richard Gooch wrote: > Phillip Ezolt writes:
> > (Kernel v2.2.5, Apache 1.3.4, egcs-1.1.1, iprobe-4.1) > > > > When running a SPECWeb96 strobe run on Alpha/linux, I found that when the > > CPU is pegged, 18% of the time is spent in the scheduler. > > This is some very interesting data!
Indeed.
> > It looks like the run queue is much longer than expected. > > Instead, I'd like to explore ways of reducing the (already low) > scheduler overhead. > > In September last year I wrote a patch which put RT processes on a > separate run queue.
I'll start working on my scheduler bigpatch again. There must be more things that can be incorporated in order to improve the efficiency and performance of the Linux scheduler...
regards,
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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