Concurrent execution of rc-scripts with rcorder(8)
joris.dedieu at gmail.com
Sun Aug 21 14:48:08 UTC 2011
2011/8/21 kilian <kklimek at uos.de>:
> 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!
There is another implementation which had been posted here (maybe)
some times ago. Maybe a good thing to compare.
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