Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932079AbWJCDCa (ORCPT ); Mon, 2 Oct 2006 23:02:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750823AbWJCDC3 (ORCPT ); Mon, 2 Oct 2006 23:02:29 -0400 Received: from ug-out-1314.google.com ([66.249.92.175]:23960 "EHLO ug-out-1314.google.com") by vger.kernel.org with ESMTP id S1750733AbWJCDC2 (ORCPT ); Mon, 2 Oct 2006 23:02:28 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=ktYIG1W4/ZY90qIv5iKeotkY3waa4uCAVih4Bil5eheUSjfxrWGzFamHEoyKQgt87TfNvTthq+Sz7RfXbLCuHDxQfBkN9BGQQBhKxv9fGEmhrNnP0tE3XRRGhRbzdwTwSH6/DsG6jOS6cmLgAiV6pw+OFg9ISZm278sBKVQVZEU= Message-ID: <41840b750610022002j4d73ab23l83a88ec757925b08@mail.gmail.com> Date: Tue, 3 Oct 2006 05:02:25 +0200 From: "Shem Multinymous" To: "Jeff Garzik" Subject: Re: SATA status reports update Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, "Pavel Machek" , "Tejun Heo" In-Reply-To: <451CE8EC.1020203@garzik.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <451CE8EC.1020203@garzik.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1022 Lines: 28 Hi Jeff, On 9/29/06, Jeff Garzik wrote: > Software status: > http://linux-ata.org/software-status.html It says: "Over and above the power management specified in the ATA/ATAPI specification, one can aggressively control the power consumption of SATA hosts, the SATA bus, and the SATA device. [...] There is little demand at the present time for aggressive, automatic power management under Linux." What about laptops on batteries? Pavel reports a 1W power draw by his ThinkPad's ICH7M SATA controller [1]. It would be neat to eliminate this when the disk is not in use (and powering up the silicon can't take much longer than spinning up a chunk glass to 7200RPM). Shem [1] http://atrey.karlin.mff.cuni.cz/~pavel/swsusp/8hours.pdf slide 11 - 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/