From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phillip Susi Subject: Re: Disk spin-up optimization during system resume Date: Fri, 17 Jan 2014 22:20:25 -0500 Message-ID: <52D9F2F9.2050304@ubuntu.com> References: <20140116220409.GA1183@linux.intel.com> <20140118012420.GA11405@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120]:62197 "EHLO cdptpa-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752100AbaARDU0 (ORCPT ); Fri, 17 Jan 2014 22:20:26 -0500 In-Reply-To: <20140118012420.GA11405@linux.intel.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: todd.e.brandt@linux.intel.com, Alan Stern Cc: Aaron Lu , Tejun Heo , SCSI development list -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 01/17/2014 08:24 PM, Todd E Brandt wrote: > 10 seconds?! The only possible way that could happen is if the test > unit ready SCSI command actually triggered an ata port wakeup; at > which point you've already done the one thing you were trying not > to do. A typical ATA disk is already spinning up on its own as soon as power is applied. They don't respond to any commands until they finish. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCgAGBQJS2fL5AAoJEI5FoCIzSKrw0MMIAIy8Ue/Ny+pq095ZHJjOtfq2 gsEQgfEjp1s2Aekv4md/H2tstit8CC1dKkIhppuLJV/0BZgckDEO+ee8SmVKf+8I ctolLIAKy+vP6jAYHaOVUGvwWEyaLsVyAuPulunvDKs9crRijI/7fFK/RtbAVQSS +fVnhriAlm7Vsd/okt3sgXMiVQGzlA5dA+0NrklAf4OZckeC/6ZqSrz3z1j1jc1k dyItvfQxdG9Sys6DrxPJGF+FKHu6btZ/m060jRSth2+i62qtTHkgLJRe0QnjmGKK 0G8AtI5WYy10igtB5xDTr8tSfxnc9bmruZQNOU+jHEerIeBDxUAAomN5t9157Sc= =O0TD -----END PGP SIGNATURE-----