Re: [PATCH 3/3] sched: limit cpu search and rotate search window for scalability

From: Subhra Mazumdar
Date: Tue Apr 24 2018 - 18:41:30 EST

On 04/24/2018 05:48 AM, Peter Zijlstra wrote:
On Mon, Apr 23, 2018 at 05:41:16PM -0700, subhra mazumdar wrote:
+ if (per_cpu(next_cpu, target) != -1)
+ target_tmp = per_cpu(next_cpu, target);
+ else
+ target_tmp = target;
This one; what's the point here?
Want to start search from target first time and from the next_cpu next time
onwards. If this doesn't many any difference in performance I can change
it. Will require re-running all the tests.