help increase process/kernel memory please

[Per olof Ljungmark]

Hi,

I clearly have a problem figuring out how to increase the limits for 
memory available to a process and the kernel.

I'm running a Perl app that need lots of memory and I would like to make 
around 2G available to it, the box has 4G physical RAM.

Which knob(s) should be tweaked? System is running 6-STABLE from around 
1st of October.

This is what I see when the process exits:
Out of memory during "large" request for 528384 bytes, total sbrk() is 
536416256 bytes

I'm depending on a solution to this and would be a really happy person 
if someone could please guide me.

Per olof