Hi.
Something is probably wrong.
kern.dfldsiz on my machine does not influence.
I.e. after booting I run
$ limits
and it shows me the old 500M.

Now, a point about 'maxdsiz'= 3.0-3.5G instead of 4G - this one I must check.
I tried 3.9G   :)

Thanks,
Dima.

On 3/12/07, Chuck Swiger wrote:

It is certainly possible to configure FreeBSD to allow a single
process to access more memory than is phyiscally installed.  For
example, I have a machine with 512MB of RAM, and set:

   kern.dfldsiz="1G"

...in /boot/loader.conf, and this works just fine.  Admittedly, when
a process does exceed 512MB in dsize, the system starts swapping
quite a bit, but that's how virtual memory works.

However, you cannot set maxdsiz greater than 4GB [1] if you are
running a 32-bit version of FreeBSD.  Enabling PAE will let the
kernel access more than 4GB of physical RAM, but nothing is going to
let a 32-bit system give more than 4 GB [1] to a single process...if
you want to do that, then you'll need to switch to running a 64-bit
version of FreeBSD.

--
-Chuck

[1]: Well, 3.5GB or 3GB, actually...due to the top portion of address
space being occupied by PCI device space and the kernel.

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