3 ms·

Reworking Memory Management in CRuby

38 points by ksec 1y ago

Alifatisk 1y ago
> One of the superpowers of MMTk is that it supports parallelism in the garbage collector. Unlike Ruby’s default garbage collector Wow
- sebiw 1y ago
  "Wow" as in "why doesn't Ruby have that already" or as in "parallelism will be great"? :-)
  - Thev00d00 1y ago
    Why not both :D
  - Lio 1y ago
    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.
pjmlp 1y ago
As historical background information, MMTk was initially implemented in Java, and used on the JikesRVM VM, one of the very first bootstraped Java implementations. https://www.jikesrvm.org/UserGuide/MMTk/index.html https://www.jikesrvm.org/UserGuide/MMTk/index.html Eventually they rewrote it in Rust, https://www.mmtk.io/ https://www.mmtk.io/ Thus it is much more than the 5 years mentioned on the post, that only covers the rewrite.
schneems 1y ago
It’s not even remotely close to the main point of the article but: I really like the Chris Seaton callout. I talked about this initiative with him the RubyConf before he passed. Open Source contributors and maintainers feel that there is a constant pressure to be producing. That somehow our worth is somehow only as good as our recent patches. That note says to me: that’s not the case. That even after the contributions stop, or we do, that our efforts and impacts are felt and remembered.
- ksec 1y ago
  >I really like the Chris Seaton callout I miss him. And I really hope someday TruffleRuby will succeed and become mainstream or at least 2nd only to Cruby.
  - schneems 1y ago
    I miss him too. We knew each other online for some time, but that was the first time I ever met him in person. I came back and couldn’t stop talking about him to my wife when she asked how the conf went. Truly an inspiring experience. I hope truffle ruby does well, too. But even if it doesn’t, he’s still made an impact on me, and on the community. I told him “thank you” to his face when we met. I also wish I could have also somehow let him know my thanks and appreciation was unconditional.

38 points by ksec 1y ago

> One of the superpowers of MMTk is that it supports parallelism in the garbage collector. Unlike Ruby’s default garbage collector Wow

sebiw 1y ago
"Wow" as in "why doesn't Ruby have that already" or as in "parallelism will be great"? :-)
- Thev00d00 1y ago
  Why not both :D
- Lio 1y ago
  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.

pjmlp 1y ago

As historical background information, MMTk was initially implemented in Java, and used on the JikesRVM VM, one of the very first bootstraped Java implementations. https://www.jikesrvm.org/UserGuide/MMTk/index.html https://www.jikesrvm.org/UserGuide/MMTk/index.html Eventually they rewrote it in Rust, https://www.mmtk.io/ https://www.mmtk.io/ Thus it is much more than the 5 years mentioned on the post, that only covers the rewrite.

schneems 1y ago

It’s not even remotely close to the main point of the article but: I really like the Chris Seaton callout. I talked about this initiative with him the RubyConf before he passed. Open Source contributors and maintainers feel that there is a constant pressure to be producing. That somehow our worth is somehow only as good as our recent patches. That note says to me: that’s not the case. That even after the contributions stop, or we do, that our efforts and impacts are felt and remembered.

ksec 1y ago
>I really like the Chris Seaton callout I miss him. And I really hope someday TruffleRuby will succeed and become mainstream or at least 2nd only to Cruby.
- schneems 1y ago
  I miss him too. We knew each other online for some time, but that was the first time I ever met him in person. I came back and couldn’t stop talking about him to my wife when she asked how the conf went. Truly an inspiring experience. I hope truffle ruby does well, too. But even if it doesn’t, he’s still made an impact on me, and on the community. I told him “thank you” to his face when we met. I also wish I could have also somehow let him know my thanks and appreciation was unconditional.