reducing shutdown time (was: Re: dangerous situation with shutdown process)

[Marc Santhoff]

Am Freitag, den 15.07.2005, 11:15 +0600 schrieb Sergey N. Voronkov:
> On Thu, Jul 14, 2005 at 04:17:06PM -0400, asym wrote:
> > At 15:19 7/14/2005, Wilko Bulte wrote:
> > >On Thu, Jul 14, 2005 at 12:14:49PM -0700, Kevin Oberman wrote..
> > >> > Date: Thu, 14 Jul 2005 20:38:15 +0200
> > >> > From: Anatoliy Dmytriyev <tolid at plab.ku.dk>
> > >> > Sender: owner-freebsd-stable at freebsd.org
[...]
> If you can't increase shutdown timeout, decrease softupdates timers.
> 
> # tail -3 /etc/sysctl.conf
> kern.metadelay=14
> kern.dirdelay=15
> kern.filedelay=17
> 
> That was my solution for shutdown wait timeout.

Intersting, I didn't know these knobs. Would it be okay to set them to
zero on an embedded system with r/o file systems?

And are there other variables tunable for reducing shutdown time (on
4-STABLE)?

TIA,
Marc