Concurrent execution of rc-scripts with rcorder(8)

[joris dedieu]

2011/8/24 Vitaly Magerya <vmagerya at gmail.com>:
>> 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?
>
> As someone who uses FreeBSD on hist laptop and is constantly annoyed
> by the lack of suspend-to-disk, every second trimmed of from boot
> time is a win.
>
> In line of the recent FreeBSD problems & solutions discussion, would
> any commiter take time to review and commit this? "FreeBSD 9.1
> introduces concurrent startup, improves boot speed" is the kind of
> buzz we're after.
>
>> Any ideas and feedback are very welcome!
>
> One thing to try is to attach a diagnostics feature that will produce
> data about rc script dependencies and execution times, which can
> be used to visualize which scripts take most time, and how to
> reorganize dependencies to improve boot time (one example I noticed
> is moused: it is only started after network is up, which is a shame,
> since it could easily start while DHCP negotiation is in progress).

Perhaps   background_dhclient="YES" should solve it ? I think
background approach (which is current archlinux one [1] ) is not so
bad. It's clearly  less powerful than automagic parallelization  but
it's maybe less invasive and more flexible for sysadmins.

I gave it a try with a little patch for rc.subr that introduces a
background keyword  (eg: moused_enable="background"). It's surly buggy
with some variables like rc_quiet. I have to check more.

[1] https://wiki.archlinux.org/index.php/DAEMONS

Joris

> _______________________________________________
> freebsd-hackers at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe at freebsd.org"
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: rc.subr.patch
Type: text/x-patch
Size: 3373 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-rc/attachments/20110825/ecf626a8/rc.subr.bin