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SubjectRe: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity
On Mon, Jun 30, 2014 at 06:05:39PM +0200, Vincent Guittot wrote:
> + /*
> + * If the CPUs share their cache and the src_cpu's capacity is
> + * reduced because of other sched_class or IRQs, we trig an
> + * active balance to move the task
> + */
> + if ((sd->flags & SD_SHARE_PKG_RESOURCES)
> + && ((capacity_orig_of(src_cpu) * 100) > (capacity_of(src_cpu) *
> + sd->imbalance_pct)))
> return 1;

Why is this tied to shared caches?


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