Strange scheduling behavoir in SMP (kernel 2.2.14)

Stephen C. Tweedie sct en redhat.com
Lun Ene 31 20:23:40 CST 2000


Hi,

On Fri, 28 Jan 2000 23:17:57 +0000 (GMT), Alan Cox
<alan en lxorguk.ukuu.org.uk> said:

> Stephen: I can duplicate the report without xosview just doing the
> stats monitoring in a kernel tweak. And Peter is right, its hopping
> about a little as stuff like kpiod disturb it.

I'm not defending the default 2.2 behaviour for a moment. :) With at
most one foreground task at a time and one constant background task, we
should always be able to schedule the interactive wakeups onto the idle
CPU.  As soon as you have two foreground tasks at once, that may no
longer be possible.

--Stephen

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