From owner-freebsd-current@FreeBSD.ORG Tue Jun 14 06:41:26 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2058D106564A; Tue, 14 Jun 2011 06:41:26 +0000 (UTC) (envelope-from danny@cs.huji.ac.il) Received: from kabab.cs.huji.ac.il (kabab.cs.huji.ac.il [132.65.16.84]) by mx1.freebsd.org (Postfix) with ESMTP id CC3DE8FC17; Tue, 14 Jun 2011 06:41:25 +0000 (UTC) Received: from pampa.cs.huji.ac.il ([132.65.80.32]) by kabab.cs.huji.ac.il with esmtp id 1QWNJQ-000GOK-OW; Tue, 14 Jun 2011 09:41:20 +0300 X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.2 To: Julian Elischer In-reply-to: <4DF63972.8070006@freebsd.org> References: <4DF3E98B.40108@FreeBSD.org> <20110612085649.GA11503@DataIX.net> <4DF50AA1.9080607@FreeBSD.org> <4DF63972.8070006@freebsd.org> Comments: In-reply-to Julian Elischer message dated "Mon, 13 Jun 2011 09:23:14 -0700." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 14 Jun 2011 09:41:20 +0300 From: Daniel Braniss Message-ID: Cc: jhell@DataIX.net, Doug Barton , freebsd-current@freebsd.org Subject: Re: rc.d script to load kernel modules X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Jun 2011 06:41:26 -0000 > On 6/12/11 11:20 PM, Daniel Braniss wrote: > >> On 6/12/2011 1:56 AM, Jason Hellenthal wrote: > >> > >>> Cutting modules out of the kernel in general does help speed up booting > >>> but loading those same modules later in the boot process will just lead > >>> you back to the same boot time. > >> Loading modules via loader.conf is many times slower than doing it from > >> disk after the system is partially booted. (As in, 2-3 seconds per > >> module vs. nearly instantaneous for all 6.) > >> > >> I didn't offer my list as an example of what to do, I offered it as a > >> syntax example. I would of course expect people to use appropriate > >> discretion to load things in loader.conf that are necessary for boot. > >> (Of course, the fact that people can easily get this wrong is a strike > >> against the technique.) > >> > >> There is no point in having an _enable for this script because if the > >> kld_list is empty, nothing happens. > >> > > Doug's solution is what we have been using for a very long time! > > > > the loader.conf solution is not practical when it's shared among many > > hosts -like here where most of the hosts are dataless-, so, moving the not > > essential ones to rc.conf was the obvious solution. > > what would be REALLY cool would be the ability to make loader.conf > have some sort of conditional > clauses.. > > e.g. if MAC== 01:02:03:04:05:06 > blah in case of diskless, this is solved by having a private (per host/per network/etc) rc.conf. in case you use dhcp/pxeboot, you can concatenate several rc.confs to get one tailored. danny