From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756877AbYCUK6e (ORCPT ); Fri, 21 Mar 2008 06:58:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754100AbYCUK6H (ORCPT ); Fri, 21 Mar 2008 06:58:07 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:41605 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754031AbYCUK6F (ORCPT ); Fri, 21 Mar 2008 06:58:05 -0400 Date: Fri, 21 Mar 2008 10:42:37 +0000 From: Alan Cox To: osb972ww-linuxczmil@yahoo.com Cc: Tejun Heo , linux-kernel@vger.kernel.org, IDE/ATA development list Subject: Re: 2.6.24.X: SATA/AHCI related boot delay. - not with 2.6.24.3 Message-ID: <20080321104237.72379e41@core> In-Reply-To: <217535.99274.qm@web34505.mail.mud.yahoo.com> References: <217535.99274.qm@web34505.mail.mud.yahoo.com> X-Mailer: Claws Mail 3.3.1 (GTK+ 2.12.5; x86_64-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 20 Mar 2008 20:04:13 -0700 (PDT) osb972ww-linuxczmil@yahoo.com wrote: > > HI Tejun, > > setting irqpoll fixed both problems, and there are no "nasty grams" in dmesg now. The original reason I was trying to use the hdparm -u on /dev/sda was because it was hanging for a few seconds when doing writes to the CFdisk, and in the past that was the kind of thing that hdparm -u would generally fix. Now with the irqpoll kernel option, the /dev/sdb SATA drive was found, and I can mount it and write to it. The CFcard /dev/sda is also responding to writes better than before. > > Thanks for the suggestion to use irqpoll. What is the problem within the driver(s) that is requiring irqpoll. ? irqpoll works around BIOS bugs not driver bugs (well generally speaking anyway). Alan