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    SubjectRe: [PATCH V2] sched: Improve load balancing in the presence of idle CPUs
    Hi Preeti,
    On Thu, Mar 26, 2015 at 06:32:44PM +0530, Preeti U Murthy wrote:
    >
    >1. An ILB CPU was chosen from the first numa domain to trigger nohz idle
    >load balancing [Given the experiment, upto 6 CPUs per core could be
    >potentially idle in this domain.]
    >
    >2. However the ILB CPU would call load_balance() on itself before
    >initiating nohz idle load balancing.
    >
    >3. Given cores are SMT8, the ILB CPU had enough opportunities to pull
    >tasks from its sibling cores to even out load.
    >
    >4. Now that the ILB CPU was no longer idle, it would abort nohz idle
    >load balancing

    I don't see abort nohz idle load balancing when ILB CPU was no longer idle
    in nohz_idle_balance(), could you explain more in details?

    Regards,
    Wanpeng Li


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