Re: scheduling

Rik van Riel (H.H.vanRiel@phys.uu.nl)
Fri, 1 May 1998 22:35:27 +0200 (MET DST)


On Fri, 1 May 1998, Alexander Kjeldaas wrote:

> Sorry, I misread mingo's posting, my error! But this means that with
> 2000 processes, assuming the run queue has 1 entry (as mingo points
> out), we will recalculate 5 times/second on i386. Each time we will
> use 1ms which means we use 0.5% cpu in the scheduler. This is on a
> very fast computer (pII/300MHz). On an alpha, it could easily be 5%
> since it does 10x as many schedule() calls. Are there any numbers on
> this?

On both Alpha and other platforms the timeslice length
is the same (20*HZ/100 == 200ms).
Therefor, the number of schedule() calls on Alpha will
be similar to that on eg. PPC or SPARC.

Rik.
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