Re: Scheduler starvation (2.5.x, 2.6.0-test1)

From: Felipe Alfaro Solana (felipe_alfaro@linuxmail.org)
Date: Tue Jul 22 2003 - 15:20:22 EST


On Tue, 2003-07-22 at 21:39, Jose Luis Domingo Lopez wrote:
> > Could you please test 2.6.0-test1-mm2? It includes some scheduler fixes
> > from Con Kolivas that will help in reducing or eliminating your
> > starvation issues.
> >
> I was having the same jumpy mouse behaviuor with 2.6.0-test1, and on an
> otherwise idle Pentium III at 600 MHz box, scrolling a very simple HTML
> page in Mozilla makes xmms skip audio.
>
> Then I tried 2.6.0-test1-mm2, and several things happened: now scrolling
> an HTML page in Mozilla seems not to affect MP3 playback with XMMS, but
> this is the only possitive effect. Focusing windows raises them way
> slower than in 2.6.0-test1, scheduler starvation is constant (just try
> to do something like going to another virtual desktop), and then, after
> several minutes, only XMMS got CPU time, the rest of the applications
> (at least, those running over X-Window) get stalled.

We know there are still some issues and we need help from people like
you. It's testing from a big enough user population what allows us to
fix things that don't work as expected :-)

If you can, please, keem trying/testing/using the -mm series of the
kernel. Con Kolivas is dedicating a lot of effort on the scheduler
issus, and I wouldn't like this effort to be useless in the end.

Thanks!

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