Re: Large arrays (again), problem case for GNAT

[Robert A Duff <bobduff@shell01.TheWorld.com>]

Mark Lorenzen <mark.lorenzen@surfpost.dk> writes:

> A simple "man malloc" specifies that the default overcommitting
> behaviour can be turned of by writing the letter "2" to the file
> /proc/sys/vm/overcommit_memory . F.x.:
> 
> echo 2 > /proc/sys/vm/overcommit_memory

Well, that's not much use.  Whether you want to overcommit depends on
the situation.  Some programs are written with overcommit in mind,
so you can't just globally turn it off.  Ideally, it would be
controllable on a per-object basis.  It should be controlled by
the programmer, not by the user/system-administrator.

Not just heap objects, either.  I'd like to have overcommit for
statically allocated (library level) variables, so I'd want to
be able to turn that off or on.

- Bob