Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751310AbdFXG6f (ORCPT ); Sat, 24 Jun 2017 02:58:35 -0400 Received: from mail-wr0-f194.google.com ([209.85.128.194]:35352 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751247AbdFXG6d (ORCPT ); Sat, 24 Jun 2017 02:58:33 -0400 Date: Sat, 24 Jun 2017 08:58:30 +0200 From: Ingo Molnar To: riel@redhat.com Cc: linux-kernel@vger.kernel.org, jhladky@redhat.com, mgorman@suse.de, peterz@infradead.org Subject: Re: [PATCH 1/4] sched,numa: override part of migrate_degrades_locality when idle balancing Message-ID: <20170624065830.tuyznoakmzoekvdh@gmail.com> References: <20170623165530.22514-1-riel@redhat.com> <20170623165530.22514-2-riel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170623165530.22514-2-riel@redhat.com> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 704 Lines: 23 * riel@redhat.com wrote: > From: Rik van Riel > > Several tests in the NAS benchmark seem to run a lot slower with > NUMA balancing enabled, than with NUMA balancing disabled. The > slower run time corresponds with increased idle time. > > Overriding the final test of migrate_degrades_locality (but still > doing the other NUMA tests first) seems to improve performance > of those benchmarks. > > Reported-by: Jirka Hladky > Signed-off-by: Rik van Riel > Signed-off-by: Rik van Riel Note, I removed the first SOB from the commit, assuming that you only meant to include the second one? Thanks, Ingo