> If this guesswork is right, I don't really have any idea how to go ab=
out
> fixing it, though -- that would be something for the VM experts among=
 us.

Intuitively it would seem that some memory should be reserved for
e.g. the pool allocator and that backpressure on the other users of
physical memory needs to imposed a bit earler than before we run
completely out.

Regards,

- H=E5vard