Re: sched: Improve load balancing in the presence of idle CPUs

From: Jason Low
Date: Mon Apr 13 2015 - 16:55:14 EST

On Fri, 2015-04-10 at 14:07 +0530, Srikar Dronamraju wrote:

> At this point, I also wanted to understand why we do
> "nohz.next_balance++" nohz_balancer_kick()?

So this looks like something that was added to avoid
nohz_balancer_kick() getting called too frequently. Otherwise, it may
get called in each trigger_load_balance(), even when another CPU has
already been kicked to do balancing.

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