Re: basic questions on MPS

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

I'd also have some MPS related questions.  Just curiosity.

1) Does somebody have experience with this MMTK [https://www.mmtk.io/]?
How does it compare to MPS?

2) When I learned that MPS uses hardware based read barriers, I was
surprised.  I had somewhere in the back of my mind some vague
memory/opinion that those are too slow to be practical.  But I actually
don't know why that should be the case.  Can somebody explain what the
problem with hardware based read barriers could be?

3) MPS uses a mostly-copying strategy.  Copying works well for
short-lived objects.  For long-lived objects it's not so great.  The big
guys (OpenJDK, V8 etc.) switch to mark-compact or something else for
older generations.  Does MPS do something special for long-lived
objects?

And I have to say that MPS looks great to me.  Especially the
documentation.

Helmut