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From: Mel <fbsd.questions@rachie.is-a-geek.net>
To: freebsd-questions@freebsd.org
Date: Wed, 19 Nov 2008 15:16:06 +0100
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Cc: Drew Tomlinson <drew@mykitchentable.net>,
	Jeremy Chadwick <koitsu@freebsd.org>, Polytropon <freebsd@edvax.de>
Subject: Re: FBSD 7.1 & kern.maxdsiz
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On Wednesday 19 November 2008 15:06:54 Drew Tomlinson wrote:
> Jeremy Chadwick wrote:
> > On Tue, Nov 18, 2008 at 04:10:55PM -0800, Drew Tomlinson wrote:
> >> Polytropon wrote:
> >>> On Tue, 18 Nov 2008 15:34:32 -0800, Drew Tomlinson 
<drew@mykitchentable.net> wrote:
> >>>> The Urchin installation docs [...]
> >>>> contain a note for FreeBSD users waring of a "hard coded process
> >>>> datasiz limit of 500 MB" and instruct on to set
> >>>> "kern.maxdsiz="1073741824"" in /boot/loader.conf.  However FBSD 7.1
> >>>> doesn't appear to have this sysctl.  How can I do the equivalent of
> >>>> this in FBSD 7.1?
> >>>
> >>> Exactly, it is *not* a sysctl setting. It's a loader tunable, as
> >>> I learned from this list some time ago. Don't search to find
> >>> it in the sysctl list, you won't find it there. :-)
> >>>
> >>> In FreeBSD 7 you should be able to set this setting using
> >>> the file /boot/loader.conf. I think I had this setting on a
> >>> FreeBSD 5 machine, I'll go and check.
> >>
> >> Thanks for your reply.  I guess I expected to be able to view it via
> >> sysctl even though I understood it could only be changed with a reboot.
> >> Is there some way to view the current setting?
> >
> > Through sysctl.
>
> OK, what am I missing?
>
> urchin# sysctl -a | grep maxdsiz
> compat.ia32.maxdsiz: 536870912
> compat.linux32.maxdsiz: 536870912


limits -H. Some loader tuneables aren't exported to sysctl.

$ limits -Hd
Resource limits (current):
  datasize           786432 kB

$ grep maxdsiz /boot/loader.conf
kern.maxdsiz="768M"

-- 
Mel

Problem with today's modular software: they start with the modules
    and never get to the software part.