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Date: Thu, 07 May 2015 16:29:49 +0300 From: Artem Bityutskiy <dedekind1@...il.com> To: Rik van Riel <riel@...hat.com> Cc: linux-kernel@...r.kernel.org, mgorman@...e.de, peterz@...radead.org, jhladky@...hat.com Subject: Re: [PATCH] numa,sched: only consider less busy nodes as numa balancing destination On Wed, 2015-05-06 at 11:41 -0400, Rik van Riel wrote: > On Wed, 06 May 2015 13:35:30 +0300 > Artem Bityutskiy <dedekind1@...il.com> wrote: > > > we observe a tremendous regression between kernel version 3.16 and 3.17 > > (and up), and I've bisected it to this commit: > > > > a43455a sched/numa: Ensure task_numa_migrate() checks the preferred node > > Artem, Jirka, does this patch fix (or at least improve) the issues you > have been seeing? Does it introduce any new regressions? > > Peter, Mel, I think it may be time to stop waiting for the impedance > mismatch between the load balancer and NUMA balancing to be resolved, > and try to just avoid the issue in the NUMA balancing code... I'll give it a try as soon as I can and report back, thanks! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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