hard memory limits

[Fredrik Lundh]

Mike Meyer wrote:

> Without platform information, it's hard to say. On a modern Unix
> system, you only run into system resource limits when the system is
> heavily loaded. Otherwise, you're going to hit per-process limits. In
> the latter case, adding RAM or swap won't help at all. Raising the
> per-process limits is the solution.

does Mac OS X ship with memory limits set by default?  isn't that
a single-user system?

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