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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS 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 939C9C4360F for ; Tue, 2 Apr 2019 16:02:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5EDD720840 for ; Tue, 2 Apr 2019 16:02:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="CxySff3G" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729909AbfDBQCO (ORCPT ); Tue, 2 Apr 2019 12:02:14 -0400 Received: from mail-wm1-f68.google.com ([209.85.128.68]:35769 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729060AbfDBQCN (ORCPT ); Tue, 2 Apr 2019 12:02:13 -0400 Received: by mail-wm1-f68.google.com with SMTP id y197so4435748wmd.0 for ; Tue, 02 Apr 2019 09:02:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=xuvM19l4tS/whe+xDSqaW8znMri7al0zrYj7EGOa/Qw=; b=CxySff3GsW7pfaQJCm7ZWOBCvA1YZpN2GjWYM6M4m/zmSKLBSTXGCeyn3xYOp0lVGo MGEOimtAtrroZqT2KZN8mpusZJGT/9V8Umhrrz+++lAj5sPvDfw8TMOgxweVL4bY7AcB khOObzLv9o4ovkV9RINfD6+E2HqCbQghgLNAY6dHjZNT6LXMPY5gjk6enYF+mXb2MHuG 9fVW3Wt6TqRInZdO0B4ye05D5TXSU8+hfiKsWdCAWTZZ9L52u3tD9nhF657gQMHxG4Wf s7wfEGbc0bopqArjhKZLrR15nj95TBu2v+Q7yuEWIoETcyWyQv1HzXw+ogrkEc9IdLO3 HzFg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=xuvM19l4tS/whe+xDSqaW8znMri7al0zrYj7EGOa/Qw=; b=ByzS/cDcJzIR6sm9g8P5DKiE6YVS8wdgFI1Z1mtC3Zgrn2N4Ux3xdq36QZESetcrH9 tBjAjnWWJeHlopZ3wLauxGseus0kvqOXu3864U9XMlmgrn2/ohx22eXa6x8UU/BWQQr/ +C93kfKJztovRyAhe6O5uTW7hBd+y7ZV5ZtJIkVfE2p3kTrzXqOVeVLn/6hRz+itxygY QlSbkKmkyM7c8vJK026S5imgRofn4qKW3q/8rN9mAt36zhXDYXz7KNQr84NEQ5JsOacp ApsZkcPRjy0yHbY1+QhBKMSKtnWNf6dbZjWWZbw78t10QpWCFHMEP2UDd4t94Le4VMhc UMKA== X-Gm-Message-State: APjAAAXGI9XRGrnyaKlu7U71hzMsGnXcRoFhNMWa9SiHtJlvKUA0Q21a 7IuFoY3iExpWbvaNOLlQcARxEuryA3iW0Q== X-Google-Smtp-Source: APXvYqx3FuzLyAk9yvLLN2chdH9ynjd0mqX9gBCYS9lmM/nGJ9isxWs8IRv9FqXCoR0+IPMSV99PCg== X-Received: by 2002:a1c:9991:: with SMTP id b139mr3954509wme.53.1554220931372; Tue, 02 Apr 2019 09:02:11 -0700 (PDT) Received: from [192.168.27.65] (sju31-1-78-210-255-2.fbx.proxad.net. [78.210.255.2]) by smtp.googlemail.com with ESMTPSA id b9sm20541332wmc.9.2019.04.02.09.02.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 02 Apr 2019 09:02:10 -0700 (PDT) Subject: Re: [PATCH 3/3] cpuidle/drivers/mbed: Add new governor for embedded systems To: Quentin Perret Cc: rjw@rjwysocki.net, tglx@linutronix.de, ulf.hansson@linaro.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20190308212047.28767-1-daniel.lezcano@linaro.org> <20190308212047.28767-4-daniel.lezcano@linaro.org> <20190402132236.7h264nffbgnojznw@queper01-lin> From: Daniel Lezcano Message-ID: Date: Tue, 2 Apr 2019 18:02:02 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: <20190402132236.7h264nffbgnojznw@queper01-lin> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/04/2019 15:22, Quentin Perret wrote: > Hi Daniel, > > On Friday 08 Mar 2019 at 22:20:47 (+0100), Daniel Lezcano wrote: >> Despite the naive idle state selection for this first iteration, the >> governor provides a performance improvement of 30% for Jankbench >> throughout for the same amount of energy than the menu governor > > Wow, that sounds really good. Which kernel and board did you use for > testing ? What's the perf. metric here ? The 99% percentile of frame > completion time ? Hi Quentin, I tried on a hikey960 with an android kernel 4.19. The used percentile is the 95%, the tests are jankbench list_view and edit_text, and exoplayer. Values are normalized against the menu governor: list_view: frame duration -35% count: +20% energy: +1% edit text: frame duration -45% count: +27% energy: -0.3% For audio and video playback, there is no frame drop. audio - energy: -2.8% video - energy: -3.8% These are preliminary results. -- Daniel -- Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog