Re: [patch] HT scheduler, sched-2.5.68-A9

Ingo Molnar (mingo@redhat.com)
Tue, 22 Apr 2003 03:08:27 -0400 (EDT)


On Tue, 22 Apr 2003, Dave Jones wrote:

> Maybe this would be better resolved at runtime ? With the above patch,
> you'd need three seperate kernel images to run optimally on a system in
> each of the cases. The 'vendor kernel' scenario here looks ugly to me.

it's not a problem - vendors enable it and that's all. But the majority of
SMP systems does not need a shared runqueue, so the associated overhead
(which, while small, is nonzero) can be avoided.

> Dumping all this into the config system seems to be the wrong direction
> IMHO. The myriad of runtime knobs in the scheduler already is bad
> enough, without introducing compile time ones as well.

what runtime knobs? I've avoided as many of them as possible.

Ingo

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