Re: MPS: staticpro everything

[Helmut Eller <eller.helmut@gmail.com>]

>>> A cheaper alternative would be to make that whole thing an ambig root,
>>> so that the string data referenced from char *source fields (interior
>>> pointers) become immovable.
>>
>> Maybe we should move strings to the LO (Leaf Object) pool which doesn't
>> move blocks.
>
> Yes, that would might be an alternative.
>
>   If LO is used to allocate large numbers of small objects, the garbage
>   collection performance will degrade. For leaf objects that can move and
>   be protected, it is better to use AMCZ (Automatic Mostly-Copying
>   Zero-rank) instead.
>
> What large and small means in that context is any ones guess :-).

It does indeed look like the LO pool is intended for larger buffers and
the AMCZ for strings.  So let's make it an ambiguous root.  Which is
probably what we always should do "when in doubt".