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Subject2.6.0-test3-mm1 interactivity scheduling mistakes (smp)
I ran a "nice make -j3 bzImage" on 2.6.9-test3-mm1 in order
to compile 2.6.0-test3-mm2 on my dual celeron.

While waiting I played cuyo, a lightweight game similiar to tetris.

This mostly behaved as expected, with a responsive game.
But mozilla (on some other virtual desktop) occationally
refreshed its page, causing several seconds with jerky response
in the game.

This is wrong for two reasons:
1. There should be enough cpu with two processors,
one running the game and another the heavy mozilla stuff.
The make was niced after all. No guessing, I told it explicitly.

2. The game has very interactive behaviour, it uses 4-10% cpu
and cause X to use about 20%. Mozilla may have been idle for a
while, getting "interactive". But it shouldn't remain
interactive for so long, it sat at 100% till it went
idle again.

X runs with elevated priority, (std. debian testing setup)
but that shouldn't matter - X only used 20% and that was
for the game and two xterms. Mozilla wasn't visible
at all.

Helge Hafting
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