Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757731AbXFLB75 (ORCPT ); Mon, 11 Jun 2007 21:59:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757580AbXFLB7q (ORCPT ); Mon, 11 Jun 2007 21:59:46 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:50658 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757469AbXFLB7o (ORCPT ); Mon, 11 Jun 2007 21:59:44 -0400 Message-ID: <466DFE09.3020408@garzik.org> Date: Mon, 11 Jun 2007 21:59:37 -0400 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.12 (X11/20070530) MIME-Version: 1.0 To: =?ISO-8859-1?Q?Dagfinn_Ilmari_Manns=E5ker?= CC: Arjan van de Ven , Henrique de Moraes Holschuh , Kristen Carlson Accardi , james.bottomley@steeleye.com, linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, htejun@gmail.com Subject: Re: [patch 3/3] Enable Aggressive Link Power management for AHCI controllers. References: <20070611184146.448266229@intel.com> <20070611114839.907bcae2.kristen.c.accardi@intel.com> <20070612011148.GA9808@khazad-dum.debian.net> <466DF3E9.30303@linux.intel.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.1.8 on srv5.dvmed.net summary: Content analysis details: (-4.3 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1289 Lines: 36 Dagfinn Ilmari Manns?ker wrote: > Arjan van de Ven writes: > >> Henrique de Moraes Holschuh wrote: >>> On Mon, 11 Jun 2007, Kristen Carlson Accardi wrote: >>>> Setting Effect >>>> ---------------------------------------------------------- >>>> min_power ALPM is enabled, and link set to enter lowest >>>> power state (SLUMBER) when idle >>>> Hot plug not allowed. >>>> >>>> max_performance ALPM is disabled, Hot Plug is allowed >>>> >>>> medium_power ALPM is enabled, and link set to enter >>>> second lowest power state (PARTIAL) when >>>> idle. Hot plug not allowed. >>> Just some food for thought: >>> If you split it into a enable/disable (0/1) attribute, and a level >>> attribute >> on/off doesn't really make sense if the question is "do you favor power >> or do you favor performance"....... > > How about just making it a numeric scale with 0 meaning no power saving > and then some fixed number of levels (e.g 0-9)? The original proposal seems far more intuitive than these alternatives. Jeff - 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/