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Date:      Sun, 21 Aug 2011 14:54:15 +0100
From:      Chris Rees <utisoft@gmail.com>
To:        kilian <kklimek@uos.de>
Cc:        freebsd-hackers@freebsd.org, "freebsd-rc@freebsd.org" <freebsd-rc@freebsd.org>
Subject:   Re: Concurrent execution of rc-scripts with rcorder(8)
Message-ID:  <CADLo83_=jQoNK5dm4QWCLRWNRzu-NLZeAsxaqexm1hKXFpdh7g@mail.gmail.com>
In-Reply-To: <20110821121509.GA27730@crane.none>
References:  <20110821121509.GA27730@crane.none>

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On 21 Aug 2011 13:39, "kilian" <kklimek@uos.de> wrote:
>
> Hello,
>
> the idea to start services concurrently during boot isn't new and the
> question why FreeBSD doesn't do it has popped up on the forum and
> mailing list occasionally. So, why not give it a shot?
>
> rcorder(8) is normally used during boot to bring the rc-scripts into a
> particular order, so when they are executed linearly by /etc/rc, all
> constraints will be satisfied. I modified rcorder(8) to enable it to
> run rc-scripts concurrently, while keeping track of the constraints as
> rc-scripts start and finish. You can find the code at
> https://github.com/kil/rcorder. As it works now, it will fall back to the
> current mode of execution if anything goes wrong. So, if worst comes to
> worst, booting takes a bit longer.
>
> If you feel brave, give it a try (Actually, not too much bravery is
needed:
> on all boots of my machine it worked perfectly every time.)
>
> I haven't done any measurements yet on how large the speedup is, but
booting
> feels a bit faster with it. Also, there probably is room for improvement.
> Any ideas and feedback are very welcome!
>
> -kilian
>

I might suggest moving this to rc@. I'll try it later, looks interesting.

Chris



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