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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 A91CDC43142 for ; Tue, 31 Jul 2018 12:15:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5EF8F208A2 for ; Tue, 31 Jul 2018 12:15:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5EF8F208A2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732160AbeGaNzG (ORCPT ); Tue, 31 Jul 2018 09:55:06 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:53240 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730031AbeGaNzG (ORCPT ); Tue, 31 Jul 2018 09:55:06 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 14AD880D; Tue, 31 Jul 2018 05:15:03 -0700 (PDT) Received: from [0.0.0.0] (e107985-lin.emea.arm.com [10.4.12.239]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6E9163F5D0; Tue, 31 Jul 2018 05:15:01 -0700 (PDT) Subject: Re: [PATCHv4 00/12] sched/fair: Migrate 'misfit' tasks on asymmetric capacity systems To: Vincent Guittot Cc: Valentin Schneider , Morten Rasmussen , Peter Zijlstra , Ingo Molnar , gaku.inami.xh@renesas.com, linux-kernel References: <1530699470-29808-1-git-send-email-morten.rasmussen@arm.com> <20180709150839.GA19287@e105550-lin.cambridge.arm.com> <98eb0daf-4467-3790-ec80-90b746807392@arm.com> <7bad2238-369c-f61c-0a51-eb14204e0429@arm.com> From: Dietmar Eggemann Message-ID: <0205e147-00cc-bc8b-104a-9cb4392ac0f8@arm.com> Date: Tue, 31 Jul 2018 14:14:59 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/31/2018 02:13 PM, Vincent Guittot wrote: > On Mon, 30 Jul 2018 at 16:30, Dietmar Eggemann wrote: >> >> On 07/26/2018 07:14 PM, Valentin Schneider wrote: [...] >> The task layout of the test looks like n=85 always running tasks (each >> for ~ 1.25ms on big or little) and they all get created and run one > > How mistfit task can make a difference for a benchmark which uses 1.25ms tasks ? Ah, sorry! This was a typo. It should be ~ 1.25s.