Hi,

> I always wanted to have kernel spport for this. Some way for aplication
> to tell the kernel about freeable memory and for the kernel to request
> some memory to be freeed instead of swapping it out.

If I recall correctly, there was an Lwn.net article reporting a lkml
(the Linux kernel mailing list) discussion on that subject.  One of
the proposals was for the kernel to send processes a signal (SIGFREE?)
requesting they free up memory (by running a major GC, for example)
whenever memory was running low.  In theory this could in some cases
avoid the invocation of the draconian OOM killer.

Question: just how effective such a feature would be in the Ocaml case?

Best regards,
Dario Teixeira