From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ABD8BC2D0DC for ; Thu, 2 Jan 2020 17:29:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8415E21835 for ; Thu, 2 Jan 2020 17:29:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727978AbgABR3G (ORCPT ); Thu, 2 Jan 2020 12:29:06 -0500 Received: from mail.kernel.org ([198.145.29.99]:60188 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727422AbgABR3E (ORCPT ); Thu, 2 Jan 2020 12:29:04 -0500 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4C511206E6; Thu, 2 Jan 2020 17:29:03 +0000 (UTC) Date: Thu, 2 Jan 2020 12:29:01 -0500 From: Steven Rostedt To: Viresh Kumar Cc: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Ben Segall , Mel Gorman , linux-kernel@vger.kernel.org Subject: Re: [PATCH] sched/fair: Load balance aggressively for SCHED_IDLE CPUs Message-ID: <20200102122901.6acbf857@gandalf.local.home> In-Reply-To: <885b1be9af68d124f44a863f54e337f8eb6c4917.1577090998.git.viresh.kumar@linaro.org> References: <885b1be9af68d124f44a863f54e337f8eb6c4917.1577090998.git.viresh.kumar@linaro.org> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 24 Dec 2019 10:43:30 +0530 Viresh Kumar wrote: > This is tested on ARM64 Hikey620 platform (octa-core) with the help of > rt-app and it is verified, using kernel traces, that the newly > SCHED_IDLE CPU does load balancing shortly after it becomes SCHED_IDLE > and pulls tasks from other busy CPUs. Can you post the actual steps you used to test this and show the before and after results? Then others can reproduce what you have shown and even run other tests to see if this change has any other side effects. Thanks! -- Steve