FBSD 7.1 & kern.maxdsiz

[Jeremy Chadwick]

On Wed, Nov 19, 2008 at 06:43:27AM -0800, Drew Tomlinson wrote:
> Mel wrote:
>> 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 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
>>>     
>>
>>
>> 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"
>>   
>
> Thanks for the explanation!  As pointed out by Pieter de Goeje, the  
> default size in FBSD 7 amd 64 is 32 GB, confirmed with the limits  
> command above.  Thus datasize does not appear to be my problem.  I'm  
> shooting in the dark here as Urchin software support is non-existent.   
> Are there any other tuneables related to datasize that I might try  
> increasing?

It would help greatly if you could explain what the problem is that
you're trying to track down?

-- 
| 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 |