Re: [RFC] scheduler: improve SMP fairness in CFS
From: Chris Friesen
Date: Wed Jul 25 2007 - 16:39:33 EST
Ingo Molnar wrote:
the 3s is the problem: change that to 60s! We no way want to
over-migrate for SMP fairness, the change i did gives us reasonable
long-term SMP fairness without the need for high-rate rebalancing.
Actually, I do have requirements from our engineering guys for
short-term fairness. They'd actually like decent fairness over even
shorter intervals...1 second would be nice, 2 is acceptable.
They are willing to trade off random peak performance for predictability.
Chris
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