From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bokhan Artem Subject: Re: [PATCH #upstream-fixes] sata_mv: don't issue two DMA commands concurrently Date: Thu, 14 Aug 2008 01:04:10 +0700 Message-ID: <48A3221A.1050504@ngs.ru> References: <489C19CE.6030708@ngs.ru> <48A2BBDC.2090201@ngs.ru> <48A2BC5D.5060801@gmail.com> <48A2C35C.7020400@ngs.ru> <48A2C460.6040504@gmail.com> <48A2C770.2040200@ngs.ru> <48A2CB1B.4000200@gmail.com> <48A2CE09.9090806@ngs.ru> <87f94c370808130957g5aa7ac0ax881de81af8e8f926@mail.gmail.com> <48A31A0E.4010703@ngs.ru> <87f94c370808131050w767623f7s51f0c667a06dcb0a@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from smtpout1.ngs.ru ([195.93.186.195]:45161 "EHLO smtpout1.ngs.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751460AbYHMSEP (ORCPT ); Wed, 13 Aug 2008 14:04:15 -0400 In-Reply-To: <87f94c370808131050w767623f7s51f0c667a06dcb0a@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Greg Freemyer Cc: Tejun Heo , linux-ide@vger.kernel.org But as I understand my problem, all retries and delays are made inside linux kernel, not inside hardware... Greg Freemyer ?????: > On Wed, Aug 13, 2008 at 1:29 PM, Bokhan Artem wrote: > >> I have particular fast, simple and cheap controller(s) (MV88SX6081 8-port >> SATA II PCI-X) with a bunch of disks w/o sw/hw raid. >> I need to return an error to application ASAP if media error detected. >> >> > > My thought was that if speed is more important than reliability in > your case, then you could buy a "Enterprise" version hard drive and > eliminate the time it takes the drive to internally do retries. > > ie. The concept for which Enterprise drives exist is raid, but that > does not mean you have to use them that way. > > Greg >