Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762267AbYHET7R (ORCPT ); Tue, 5 Aug 2008 15:59:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758564AbYHET7B (ORCPT ); Tue, 5 Aug 2008 15:59:01 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:57925 "EHLO gprs189-60.eurotel.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757951AbYHET7A (ORCPT ); Tue, 5 Aug 2008 15:59:00 -0400 Date: Tue, 5 Aug 2008 22:00:21 +0200 From: Pavel Machek To: Eric Piel Cc: Theodore Tso , Robert Hancock , Alan Cox , Gabor Gombas , Tejun Heo , Elias Oltmanns , Jeff Garzik , Bartlomiej Zolnierkiewicz , James Bottomley , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/5] libata: Implement disk shock protection support Message-ID: <20080805200021.GF7939@elf.ucw.cz> References: <4897D16F.3000504@shaw.ca> <20080805131417.GC8569@mit.edu> <48986E3A.5020707@tremplin-utc.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48986E3A.5020707@tremplin-utc.net> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1215 Lines: 25 On Tue 2008-08-05 17:14:02, Eric Piel wrote: > Theodore Tso schreef: >> The real right answer though is to buy one of the laptop drives (such >> as the Seagate Momentus 7200.2 or 7200.3) which has the anti-shock >> detection built directly into the hard drive. That way you don't have >> to have a daemon that sits in the OS waking up the CPU some 20 to 30 >> times a second and burning up your battery even when the laptop is >> idle. > Well, it's not always _that_ bad. For instance, the accelerometer in the HP > laptops (lis3lv02dl) can monitor free-falls by itself. When the laptop > starts falling, it generates one interrupt. I was told that "when it starts falling" is too late. Thinkpads at least tried to detect the movement before fall: before notebook falls off table, it is very likely to tilt a lot. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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/