rc.d script to load kernel modules

Daniel Braniss danny at cs.huji.ac.il
Mon Jun 13 06:51:50 UTC 2011

> 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 boot. 
> (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 the 
> 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 many
hosts -like here where most of the hosts are dataless-, so, moving the not
essential ones to rc.conf was the obvious solution.

my .5


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