Date: Tue, 19 Jun 2012 04:20:19 -0700 From: Garrett Cooper <yanegomi@gmail.com> To: Richard Yao <ryao@gentoo.org> Cc: Doug Barton <dougb@freebsd.org>, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, Vincent Hoffman <vince@unsane.co.uk>, Nathan Whitehorn <nwhitehorn@freebsd.org>, Outback Dingo <outbackdingo@gmail.com>, Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>, openrc@gentoo.org, =?ISO-8859-1?Q?Atte_Peltom=E4ki?= <atte.peltomaki@iki.fi> Subject: Re: Replacing rc(8) (Was: FreeBSD Boot Times) Message-ID: <CAGH67wR%2BzUNcQ_v3%2BQZUgVpc47DjoWaayzKjf2qeZStVYS5ToA@mail.gmail.com> In-Reply-To: <4FE0086F.4000507@gentoo.org> References: <20120615124849.GI96212@ass.kameli.org> <CAKYr3zxSOFOUghqao=3U_8sBNHwqce8AGK6mSFd6is11qzjS8w@mail.gmail.com> <20120618081140.GK96212@ass.kameli.org> <4FDF6177.5050608@unsane.co.uk> <4FDF6586.9060501@gentoo.org> <4FDFB166.2040709@FreeBSD.org> <alpine.BSF.2.00.1206190636100.1823@wojtek.tensor.gdynia.pl> <4FE0086F.4000507@gentoo.org>
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On Mon, Jun 18, 2012 at 10:04 PM, Richard Yao <ryao@gentoo.org> wrote:
> On 06/19/2012 12:39 AM, Wojciech Puchar wrote:
>> - delay at rc.d scripts - there are some delays inserted.
>>
>>> The latter item is the only place where making changes to rc.d is going
>>> to help, and only then by parellelizing, and even then you are not
>>> really going to gain much since most things at boot time are serial.
>>
>> grep sleep /etc/rc.d/* usr/local/etc/rc.d/*
>>
>>>
>>> So while talk of how to get your favorite boot-time manager into FreeBSD
>>> may be entertaining, it's not likely to be productive, and almost
>>
>> it is unimportant as FreeBSD don't crash.
>
> OpenRC init scripts lack such delays. They store dependency information,
> which enables OpenRC to start them as soon as their dependencies are ready.
Assuming that the hacks aren't working around other issues, like
routes not already being available for a certain period of time, e.g.
defaultroute, etc (which doesn't work 100% of the time, e.g. static
gateways and mounting NFS shares).
This is something that launchd, systemd, upstart, etc handle
(because they either have more knowledge of the system or it's been
coded into the files that execute the jobs/services), or alternatively
the services need to fail more gracefully (this is more difficult --
but not impossible -- to code). Even OpenRC in gentoo doesn't handle
this, unless things have changed dramatically since I used Gentoo ~2
years ago...
Thanks!
-Garrett
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