General Problems for GC'ed Applications?

[Walter Bright]

Frits van Bommel wrote:
> One of the other cool thing this collector does IIRC: it tries to move 
> all objects out of a page that's scheduled to be swapped out if there's 
> space in other (memory resident) pages. If that's successful it then 
> tells the kernel to forget about saving the contents to disk since they 
> won't be needed anymore.

The GC can be improved if it can cooperate with/use the VM hardware. 
I've thought for some time that GC ought to be an OS system service for 
that reason, rather than an app library.