> One of the superpowers of MMTk is that it supports parallelism in the garbage ...

sebiw · 2025-10-17T10:00:14 1760695214

"Wow" as in "why doesn't Ruby have that already" or as in "parallelism will be great"? :-)

Lio · 2025-10-17T11:29:37 1760700577

When we say "Ruby" doesn't have parallel GC we're really just talking about MRI cRuby.

Both the JRuby and TruffleRuby implemenations have had parellel GC for a very long time.

I think Peter Zhu work on cRuby has been brilliant here and is really appreciated.

Thev00d00 · 2025-10-17T10:07:38 1760695658

Why not both :D