From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757936AbcFAJtE (ORCPT ); Wed, 1 Jun 2016 05:49:04 -0400 Received: from mail-wm0-f41.google.com ([74.125.82.41]:37834 "EHLO mail-wm0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757555AbcFAJsg (ORCPT ); Wed, 1 Jun 2016 05:48:36 -0400 Message-ID: <1464774513.4023.78.camel@gmail.com> Subject: Re: [LKP] [lkp] [sched/fair] 53d3bc773e: hackbench.throughput -32.9% regression From: Mike Galbraith To: "Huang, Ying" , Peter Zijlstra Cc: Ingo Molnar , lkp@01.org, linux-kernel@vger.kernel.org, Thomas Gleixner , Linus Torvalds Date: Wed, 01 Jun 2016 11:48:33 +0200 In-Reply-To: <87inxtjnnb.fsf@yhuang-dev.intel.com> References: <87inxud4ex.fsf@yhuang-dev.intel.com> <87eg8id3s3.fsf@yhuang-dev.intel.com> <20160531124151.GK3190@twins.programming.kicks-ass.net> <87eg8h8pwl.fsf@yhuang-dev.intel.com> <20160601084035.GL3190@twins.programming.kicks-ass.net> <87inxtjnnb.fsf@yhuang-dev.intel.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2016-06-01 at 16:53 +0800, Huang, Ying wrote: > You mean the commit is a functionality fix? Yup. These kind of things can be a bit annoying. The fix to not subtract load that we never added in the first place also pushed hackbench around a bit. Do anything at all with load_avg, you're gonna push this/that benchmark around a bit, and folks who watch numbers closely can end up chasing meaningless deltas. -Mike