From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932130AbWFFHKW (ORCPT ); Tue, 6 Jun 2006 03:10:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932131AbWFFHKW (ORCPT ); Tue, 6 Jun 2006 03:10:22 -0400 Received: from nz-out-0102.google.com ([64.233.162.194]:7517 "EHLO nz-out-0102.google.com") by vger.kernel.org with ESMTP id S932130AbWFFHKW (ORCPT ); Tue, 6 Jun 2006 03:10:22 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:content-type:content-transfer-encoding; b=Fxx1BfgSQ+8p8x9N6ghieoxwqEjwnRaKiBDHO+lAcTB+JmXS/eI/b/0Eetj2U/2aW4nIAcSWOBD0JfWNMWyWSQ21dWIUVcRsqePJO2+G7KFI7j3bOT9VXYLtvhV7YKsGuVNkUb8Lq5L8fyH6g6YcFnF8WUS3tinpmgR8oz5R+vs= Message-ID: <44852A53.6050204@gmail.com> Date: Tue, 06 Jun 2006 16:10:11 +0900 From: Tejun Heo User-Agent: Thunderbird 1.5.0.2 (X11/20060516) MIME-Version: 1.0 To: Jens Axboe CC: Robert Hancock , Bill Davidsen , linux-kernel Subject: Re: [git patch] libata resume fix References: <6hAdo-5CV-5@gated-at.bofh.it> <6hXD0-6Y9-1@gated-at.bofh.it> <6icsx-4vp-33@gated-at.bofh.it> <6ih8Y-3ba-15@gated-at.bofh.it> <6iH3h-2xw-59@gated-at.bofh.it> <447E5EAD.5070808@shaw.ca> <20060601134802.GK4400@suse.de> <4485269B.8060602@gmail.com> <20060606070539.GO4400@suse.de> In-Reply-To: <20060606070539.GO4400@suse.de> 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 Jens Axboe wrote: >> Can you measure spin up time for your 15k's? Some controllers can't >> catch the first D2H FIS after POR and have to wait unconditionally for >> spin up for hotplug & resuming from suspend. Currently 8 sec wait is >> used but it seems insufficient for your drives. Failing to spinup in >> that 8 secs would probably result in timeout of the first reset attempt >> and retrial - which currently takes > 30 secs. >> >> Spin-up time can be measured by first issuing STANDBY and then time how >> long IDLE IMMEDIATE takes, I think. > > The 15K RPM is a SCSI drive, I haven't seen any SATA 15K rpm drives yet. > I have the same model in another box, I can measure spinup with > START_STOP unit there. I will do so later today, when I fire it up, if > you still want to know? > Arggh.. Confused w/ 10k drives. But it would be nice to know spin-up time for 15k's if it doesn't waste too much of your time. Thanks. -- tejun