Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758424AbbLCEcc (ORCPT ); Wed, 2 Dec 2015 23:32:32 -0500 Received: from mail-wm0-f66.google.com ([74.125.82.66]:32875 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753993AbbLCEcb (ORCPT ); Wed, 2 Dec 2015 23:32:31 -0500 Message-ID: <1449117148.3314.5.camel@gmail.com> Subject: Re: [PATCH v2 2/3] sched/fair: Move hot load_avg into its own cacheline From: Mike Galbraith To: Waiman Long Cc: Ingo Molnar , Peter Zijlstra , linux-kernel@vger.kernel.org, Yuyang Du , Paul Turner , Ben Segall , Morten Rasmussen , Scott J Norton , Douglas Hatch Date: Thu, 03 Dec 2015 05:32:28 +0100 In-Reply-To: <1449081710-20185-3-git-send-email-Waiman.Long@hpe.com> References: <1449081710-20185-1-git-send-email-Waiman.Long@hpe.com> <1449081710-20185-3-git-send-email-Waiman.Long@hpe.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.11 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 Content-Length: 937 Lines: 23 On Wed, 2015-12-02 at 13:41 -0500, Waiman Long wrote: > By doing so, the perf profile became: > > 9.44% 0.00% java [kernel.vmlinux] [k] smp_apic_timer_interrupt > 8.74% 0.01% java [kernel.vmlinux] [k] hrtimer_interrupt > 7.83% 0.03% java [kernel.vmlinux] [k] tick_sched_timer > 7.74% 0.00% java [kernel.vmlinux] [k] update_process_times > 7.27% 0.03% java [kernel.vmlinux] [k] scheduler_tick > 5.94% 1.74% java [kernel.vmlinux] [k] task_tick_fair > 4.15% 3.92% java [kernel.vmlinux] [k] update_cfs_shares > > The %cpu time is still pretty high, but it is better than before. Is that with the box booted skew_tick=1? -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/