[PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity
From: peterz@infradead.org (Peter Zijlstra)
Date: 2014-07-10 11:18:41
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From: peterz@infradead.org (Peter Zijlstra)
Date: 2014-07-10 11:18:41
Also in:
lkml
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?