Date: Mon, 13 Jun 2011 11:38:00 -0700 From: Garrett Cooper <yanegomi@gmail.com> To: Chris Rees <utisoft@gmail.com> Cc: Doug Barton <dougb@freebsd.org>, freebsd-current@freebsd.org Subject: Re: rc.d script to load kernel modules Message-ID: <BANLkTim=oxbqZTeVXKC-DzZd0xfGMoLBxw@mail.gmail.com> In-Reply-To: <BANLkTikobRSTzLwh8ZT=LqZ14-w7ABe=Tg@mail.gmail.com> References: <4DF3E98B.40108@FreeBSD.org> <20110612085649.GA11503@DataIX.net> <4DF50AA1.9080607@FreeBSD.org> <E1QW0VI-000Ohl-K4@kabab.cs.huji.ac.il> <4DF63972.8070006@freebsd.org> <BANLkTi=fvm3P2Bc4MG2tWwi%2BZL_dfo0Y7g@mail.gmail.com> <BANLkTi=9HjYCEMwo4QJfmgAADZTx3SbC3g@mail.gmail.com> <BANLkTikobRSTzLwh8ZT=LqZ14-w7ABe=Tg@mail.gmail.com>
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On Mon, Jun 13, 2011 at 10:40 AM, Chris Rees <utisoft@gmail.com> wrote: > > On 13 Jun 2011 18:24, "Garrett Cooper" <yanegomi@gmail.com> wrote: >> >> On Mon, Jun 13, 2011 at 10:00 AM, Chris Rees <utisoft@gmail.com> wrote: >> > On 13 Jun 2011 17:24, "Julian Elischer" <julian@freebsd.org> wrote: >> >> >> >> 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 boo= t. >> >>>> (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 t= he >> >>>> 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 man= y >> >>> hosts -like here where most of the hosts are dataless-, so, moving t= he >> > not >> >>> essential ones to rc.conf was the obvious solution. >> >> >> >> >> >> what would be REALLY cool would be the ability to make loader.conf ha= ve >> > some sort of conditional >> >> clauses.. >> >> >> >> e.g. if MAC=3D=3D 01:02:03:04:05:06 >> >> =A0 =A0 =A0 =A0 =A0blah >> >> >> >> >> > >> > Isn't it just a shell script? >> >> =A0 =A0The values are eval'ed from Forth-code, not /bin/sh -- so it's no= t >> a shell script in the way that you're generally used to :). >> =A0 =A0But yes, it could be made conditional. > > I was talking about rc.conf.... is that Forth too? No, that's definitely bourne shell, but it breaks some tools like Devin Taske's sysrc, etc if you use that :). I thought you were talking about what gets read in with device.hints / loader.conf / loader.rc. Thanks! -Garrett
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