Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752408AbaAGQT5 (ORCPT ); Tue, 7 Jan 2014 11:19:57 -0500 Received: from service87.mimecast.com ([91.220.42.44]:45250 "EHLO service87.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752004AbaAGQTv (ORCPT ); Tue, 7 Jan 2014 11:19:51 -0500 From: Morten Rasmussen To: peterz@infradead.org, mingo@kernel.org Cc: rjw@rjwysocki.net, markgross@thegnar.org, vincent.guittot@linaro.org, catalin.marinas@arm.com, morten.rasmussen@arm.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [0/11][REPOST] Energy-aware scheduling use-cases and scheduler issues Date: Tue, 7 Jan 2014 16:19:36 +0000 Message-Id: <1389111587-5923-1-git-send-email-morten.rasmussen@arm.com> X-Mailer: git-send-email 1.7.9.5 X-OriginalArrivalTime: 07 Jan 2014 16:19:46.0471 (UTC) FILETIME=[47E4DB70:01CF0BC4] X-MC-Unique: 114010716194902901 Content-Type: text/plain; charset=WINDOWS-1252 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.home.local id s07GK1ZB019848 Reposting the series with LKML on cc as well. Original thread (with a few replies) can be found here: http://article.gmane.org/gmane.linux.power-management.general/41501 Sorry for double-posting. Morten ------------------------------------------------------------------------ Hi, One of the requests from the scheduler maintainers at the Energy-aware Scheduling workshop at Kernel Summit this year was to provide plain text descriptions of use-cases (workloads) and system topologies. To get that moving I have written some short texts about some use-cases. In addition I described a list of issues that today prevent mainly the scheduler from achieving a good energy/performance balance in common use-cases. The follow-up emails are structured as follows: 1-6: Current issues related to energy/performance balance. 7-10: Use-cases (overall behaviour and energy/performance goals) 11: DVFS example (for reference) I'm hoping that this provides some of the background for why I'm interested in improving energy-awareness in the scheduler. I'm aware that the use-cases and issues/wishlist don't cover everyone's area of interest. Input is needed to fix that. Comments and input are appreciated. Morten -- 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/