On Mon, 28 Jul 2003, Mike Galbraith wrote:
> >Yes I can reproduce it, but we need the Kirk approach and cheat. Some
> >workaround for tasks that have fallen onto the expired array but shouldn't be
> >there needs to be created. But first we need to think of one before we can
> >create one...
>
> Oh good, it's not my poor little box. My experimental tree already has
> a "Kirk" ;-)
could you give -G7 a try:
redhat.com/~mingo/O(1)-scheduler/sched-2.6.0-test1-G7
Mr. Kirk was busy fixing the IDE code (a subsystem he loves to contribute
to) but i managed to get some code from Mr. Spock: it introduces
ON_RUNQUEUE_WEIGHT, set to 30% currently. Wakeups that come from IRQ
contexts get a 100% sleep average - most hw interrupts are of interactive
nature.
this method should result in process-context wakeups giving a limited but
load-proportional boost - which boost is enough to prevent such tasks from
getting max CPU hogs, but not enough to make them permanently interactive.
Ingo
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This archive was generated by hypermail 2b29 : Thu Jul 31 2003 - 22:00:34 EST