Re: 2.5.47 scheduler problems?

[Mike Galbraith]

At 12:41 AM 11/22/2002 -0500, Jim Houston wrote:
>Hi Mike, Rik, Everyone,
>
>The O(1) schedule just isn't fair.  It will run a subset
>of the runable processes excluding the rest.  See my earlier
>emails for the details.
>
>I had been working on a fix for this but got distracted
>by Posix timers.  I still hope to get back to it.
>
>My patch is here:
>http://marc.theaimsgroup.com/?l=linux-kernel&m=103508412423719&w=2

In a brief test, this seems to cure my problem.

>It fixes fairness but breaks nice(2). Rik van Riel has a
>patch here which builds on my patch which fixes this:
>http://marc.theaimsgroup.com/?l=linux-kernel&m=103651801424031&w=2

(I haven't test this one yet)

>I just gave this a spin with.  The patches still apply cleanly
>to linux-2.5.48 and it seems well behaved:-)

It seems a little choppy still for a not swapping load, but greatly improved.

Thanks!

         -Mike