Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751987AbWJaFjW (ORCPT ); Tue, 31 Oct 2006 00:39:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752025AbWJaFjW (ORCPT ); Tue, 31 Oct 2006 00:39:22 -0500 Received: from colo.lackof.org ([198.49.126.79]:51844 "EHLO colo.lackof.org") by vger.kernel.org with ESMTP id S1751987AbWJaFjV (ORCPT ); Tue, 31 Oct 2006 00:39:21 -0500 Date: Mon, 30 Oct 2006 22:39:19 -0700 From: Grant Grundler To: Matthew Wilcox Cc: Kyle Moffett , Linus Torvalds , "Adam J. Richter" , akpm@osdl.org, bunk@stusta.de, greg@kroah.com, linux-kernel@vger.kernel.org, linux-pci@atrey.karlin.mff.cuni.cz, pavel@ucw.cz, shemminger@osdl.org Subject: Re: [patch] drivers: wait for threaded probes between initcall levels Message-ID: <20061031053919.GA4726@colo.lackof.org> References: <200610282350.k9SNoljL020236@freya.yggdrasil.com> <20061030144259.GD10235@parisc-linux.org> <87F87E8E-9434-4844-AA3F-ED850BEFAD29@mac.com> <20061030191307.GE10235@parisc-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061030191307.GE10235@parisc-linux.org> X-Home-Page: http://www.parisc-linux.org/ User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 922 Lines: 24 On Mon, Oct 30, 2006 at 12:13:07PM -0700, Matthew Wilcox wrote: > Probing PCI devices really doesn't take that long. Yeah - usually measured in "milliseconds". > It's the extra stuff > the drivers do at ->probe that takes the time. And the stand-out > offender here is SCSI (and FC), which I'm working to fix. Firewire, USB > and SATA are somewhere intermediate. ISTR that the SATA Port timeout is 5 seconds or something like that. And some cards have lots of ports...so my impression is SATA would benefit alot from parallelism as well. I'm certainly no SATA expert...maybe someone else could speak more definitely on the topic of worst case SATA timeout. thanks, grant - 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/