| Date | Thu, 16 Aug 2012 17:58:44 +0800 | From | Alex Shi <> | Subject | Re: [discussion]sched: a rough proposal to enable power saving in scheduler |
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On 08/16/2012 02:53 PM, preeti wrote:
> > Hi everyone, > > From what I have understood so far,I try to summarise pin pointed > differences between the performance and power policies as found > relevant to the scheduler-load balancing mechanism.Any thoughts?
Currently, the load_balance trigger will be called in timer for periodic tick, or dynamic tick. In periodic tick, the cpu is waked, so do load_balance is not cost much. But in dynamic tick. we'd better do power policy suitable scenario checking in nohz_kick_needed(), and then do nohz_balancer_kick on least but non-idle cpu if possible. that reduce the idle cpu waking chance.
Any comments?
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