Re: [PATCH] N1int for interactivity

From: Felipe Alfaro Solana (
Date: Wed Jul 16 2003 - 02:12:00 EST

On Wed, 2003-07-16 at 01:12, Con Kolivas wrote:
> > I can still starve XMMS on 2.5.75-mm1 + patch-O5int-0307150857 +
> > patch-N1int-0307152010:
> >
> > 1. Log on to KDE
> > 2. Launch Konqueror
> > 3. Launch XMMS and make it play
> > 4. Move Konqueror window all over the desktop
> >
> > Step 4 will make XMMS starve for a few seconds. Also, under heavy load
> > (while true; do a=2; done), moving the Konqueror window like crazy makes
> > X go jerky after a few seconds. If I quit moving windows around, after a
> > few other seconds, X returns to normal/smooth behavior.
> I was more concerned to see if the N1 patch added anything to the current
> behaviour, but that is abandoned work now so don't worry. I can address these
> further issues incrementally if you're willing to test them. My test boxes
> have been tamed but I need and appreciate greatly your testing.

Just throw anything to me and I will test it gladly :-)

> > I can fix the starvation/smoothness by setting:
> >
> > #define PRIO_BONUS_RATIO 45
> > #define MAX_SLEEP_AVG (HZ)
> >
> > For me, 2.6.0-test1 stock scheduler plus above changes makes the most
> > user-friendly desktop I've ever seen.
> With a max sleep avg of just one second you'll never starve X or xmms for
> sustained periods; but under load X will not be smooth getting jerky even
> with small bursts of heavy X use; that's why Ingo increased the max sleep avg
> in the first place... but that led to other issues...

Well, under heavy load (while true ...) X still feels very smooth with
2.6.0-test1 and the above changes. In fact, I was inclined to make those
changes as X didn't feel smooth under load on my system without them.

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