Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751503AbXFLEBb (ORCPT ); Tue, 12 Jun 2007 00:01:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750762AbXFLEBV (ORCPT ); Tue, 12 Jun 2007 00:01:21 -0400 Received: from mga06.intel.com ([134.134.136.21]:37419 "EHLO orsmga101.jf.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750698AbXFLEBU (ORCPT ); Tue, 12 Jun 2007 00:01:20 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.16,410,1175497200"; d="scan'208";a="253334607" Message-ID: <466E1A32.90306@linux.intel.com> Date: Mon, 11 Jun 2007 20:59:46 -0700 From: Arjan van de Ven User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: Henrique de Moraes Holschuh CC: Jeff Garzik , =?ISO-8859-1?Q?Dagfinn_Ilmari_Mann?= =?ISO-8859-1?Q?s=E5ker?= , 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> <466DFE09.3020408@garzik.org> <20070612035928.GB9808@khazad-dum.debian.net> In-Reply-To: <20070612035928.GB9808@khazad-dum.debian.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 756 Lines: 17 Henrique de Moraes Holschuh wrote: > On Mon, 11 Jun 2007, Jeff Garzik wrote: >>>> on/off doesn't really make sense if the question is "do you favor power >>>> or do you favor performance"....... > > Actually, it does if you think of it as "do you need hotplug right now or > not?". that's a temporary shortcoming; even with these power savings you can do hotplug as long as you're willing to poll for it at a reasonable interval and are willing to wait the time between polls for a hotplug to take effect.. - 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/