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Date: Tue, 5 Oct 2010 21:54:16 +0000
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From: Paul B Mahol <onemda@gmail.com>
To: Mark Stosberg <mark@summersault.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: altering "maxdsiz" or "datasize" limit ?
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On 10/5/10, Mark Stosberg <mark@summersault.com> wrote:
>
> Hello,
>
> We've been satisfied FreeBSD users for several years at our hosting
> company.
>
> Recently we ran into into a problem where a long running cron script was
> dying early because it is hitting FreeBSD's data segment size limit of
> 512 Megs, even though the machine has plenty more memory. I would like
> to raise this limit, and am currently using FreeBSD 6.2.
>
> When I researched this, I first found references to tuning "maxdsiz" in
> loader.conf, then some pointed out what I found myself.... this variable
> is no longer documented and perhaps no longer present in FreeBSD 6.2.
>
> I also found that it appears you can report on it and change it with the
> "limits" command:
>
>  limits -d 1g
>
> That appears to work in the sense that the command is allowed and no
> error is returned, but then if I run a follow up "limits" report again,
> I see that no change is reported to have happened.
>
> So, how I can actually increase this limit? (Both immediately and
> persisting through a reboot).

kern.maxdsiz

In /boot/loader.conf

You cant increase it immediately.