On Fri, Jun 21, 2002 at 09:17:43PM -0400, Douglas Troeger wrote:
> 
> I am running 1.5.2, with a generic kernel, on a machine with 256Meg of
> ram.  Under bash, ulimit -m returns 250316 (kbytes).
> 
> Nonetheless, my scheme processes are being killed by out-of-memory
> errors at 128M, even though top reports that the system has memory
> to spare.
> 
> In fact, the following program
> 
> --------------------------
> 
> #include <stdio.h>
> 
>  int main()
>  {
>     while (1) { malloc(4096); }
>  }
> 
> --------------------------
> 
> allocates 128M (according to top), and no more.
> 
> 
> 
> I would be most grateful if someone could explain this to me!  Can
> the effective upper limit on process size be increased?

You likely need to raise ulimit -d as well.

The max for this will be 1G on a default kernel. If you need more, you
can adjust /usr/src/sys/arch/i386/include/vmparam.h and compile a
kernel.

See the MAXxxxx defines in that file. 

-- 
David Maxwell, david@vex.net|david@maxwell.net -->
If you don't spend energy getting what you want,
	You'll have to spend it dealing with what you get.
					      - Unknown