From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261439AbVGDHgd (ORCPT ); Mon, 4 Jul 2005 03:36:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261412AbVGDHgd (ORCPT ); Mon, 4 Jul 2005 03:36:33 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:11738 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S261608AbVGDH1Z (ORCPT ); Mon, 4 Jul 2005 03:27:25 -0400 Subject: Re: IBM HDAPS things are looking up (was: Re: [Hdaps-devel] Re: [ltp] IBM HDAPS Someone interested? (Accelerometer)) From: Arjan van de Ven To: Jens Axboe Cc: Alejandro Bonilla , Lenz Grimmer , Jesper Juhl , Dave Hansen , Henrik Brix Andersen , hdaps-devel@lists.sourceforge.net, LKML List In-Reply-To: <20050704072231.GG1444@suse.de> References: <9a8748490507031832546f383a@mail.gmail.com> <42C8D06C.2020608@grimmer.com> <20050704061713.GA1444@suse.de> <42C8C978.4030409@linuxwireless.org> <20050704063741.GC1444@suse.de> <1120461401.3174.10.camel@laptopd505.fenrus.org> <20050704072231.GG1444@suse.de> Content-Type: text/plain Date: Mon, 04 Jul 2005 09:27:16 +0200 Message-Id: <1120462037.3174.25.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.2.2 (2.2.2-5) Content-Transfer-Encoding: 7bit X-Spam-Score: 3.7 (+++) X-Spam-Report: SpamAssassin version 2.63 on pentafluge.infradead.org summary: Content analysis details: (3.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 1.1 RCVD_IN_DSBL RBL: Received via a relay in list.dsbl.org [] 2.5 RCVD_IN_DYNABLOCK RBL: Sent directly from dynamic IP address [80.57.133.107 listed in dnsbl.sorbs.net] 0.1 RCVD_IN_SORBS RBL: SORBS: sender is listed in SORBS [80.57.133.107 listed in dnsbl.sorbs.net] X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > > Yeah, that likely needs a little help from the ide driver. If you force > a spindown, you will effectively have parked the head for as long as the > spindown + spinup takes. That could turn out to be enough, it will take > more than 1-2 seconds anyways. I doubt it; laptop disks seem to be optimized for spinning up/down fast (for powersaving reasons) so while for normal disks I'd agree with you, for laptop disks I'm far less sure.