Re: [Lse-tech] Re: multi-queue scheduler update

[Andi Kleen]

On Fri, Jan 19, 2001 at 01:26:16AM +0100, Andrea Arcangeli wrote:
> I remeber the O(1) scheduler from Davide Libenzi was beating the mainline O(N)
> scheduler with over 7 tasks in the runqueue (actually I'm not sure if the
> number was 7 but certainly it was under 10). So if you also use a O(1)
> scheduler too as I guess (since you have a chance to run fast on the lots of
> tasks running case) the most interesting thing is how you score with 2/4/8
> tasks in the runqueue (I think the tests on the O(1) scheduler patch was done
> at max on a 2-way SMP btw). (the argument for which Davide's patch wasn't
> included is that most machines have less than 4/5 tasks in the runqueue at the
> same time)

They seem to have tried that in a separate patch:
http://lse.sourceforge.net/scheduling/PrioScheduler.html

Very nice literate programming style btw @-)

-Andi