Messages in this thread | | | Date | Sat, 15 Aug 2015 11:33:32 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFCv5 PATCH 35/46] sched: Disable energy-unfriendly nohz kicks |
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On Tue, Jul 07, 2015 at 07:24:18PM +0100, Morten Rasmussen wrote: > With energy-aware scheduling enabled nohz_kick_needed() generates many > nohz idle-balance kicks which lead to nothing when multiple tasks get > packed on a single cpu to save energy. This causes unnecessary wake-ups > and hence wastes energy. Make these conditions depend on !energy_aware() > for now until the energy-aware nohz story gets sorted out.
The patch does slightly more; it also allows the kick if over utilized.
But disabling this will allow getting 'stuck' in certain over loaded situations because we're not kicking the balancer.
I think you need more justification for doing this.
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