FBSD 7.1 & kern.maxdsiz

[Jeremy Chadwick]

On Wed, Nov 19, 2008 at 06:06:54AM -0800, 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 at 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
>
> I do not see one named 'kern.maxdsiz'.

Actually, you're not missing anything.  It's me who's missing (part of
my brain).  The loader tunables you want are visible via limits(1), not
sysctl.

Other loader tunables *are* visible through sysctl though, hence my
comment.  Sorry for the confusion.

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |