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Yes, it was introduced in Ruby 2.6 (2018): https://www.ruby-lang.org/en/news/2018/12/25/ruby-2-6-0-released/ https://www.ruby-lang.org/en/news/2018/12/25/ruby-2

Yes, it was introduced in Ruby 2.6 (2018): https://www.ruby-lang.org/en/news/2018/12/25/ruby-2-6-0-released/ https://www.ruby-lang.org/en/news/2018/12/25/ruby-2-6-0-rele...

pizza234 6y ago
Well, yes and no (althought the question is a bit open). It's more or less beta quality, and very primitive. It's discouraged to be used with Rails, so I'd be inclined to state that "we didn't get it yet". I'm also personally skeptical that the unusual approach (invoking a whole C compiler in a separate thread) will stand in the long term - but that's my own take.
- jashmatthews 6y ago
  The CRuby JIT is stable but whether it improves performance or not is workload dependent. It's simple not primitive. MJIT is designed to take advantage of a C compilers optimization. "Compile to C" worked for Chicken Scheme for the past 20 years and continues to be a popular way for functional langauges to compile. It's also how Nim works. It's all about different trade-offs.
  - oblio 6y ago
    Chicken Scheme compiles ahead of time, doesn't it?
    - pansa2 6y ago
      Nim does too.
    - jashmatthews 6y ago
      Yeah but it's not an important distinction.
      - oblio 6y ago
        Isn't it? Compiling C takes time, with Ruby you would be doing it for each execution. Is there some catching involved?
        jashmatthews 6y ago
        Almost everything is in a pre-compiled header. Its actually similar overhead to an LLVM based JIT. You wouldn’t want to do it for a browser JIT but for a server side app it’s OK.
        oblio 6y ago
        Does Ruby ship with a compiler? How will this work on Windows?
  - pizza234 6y ago
    Are there any benchmarks available? It seems I can find very little (OptCarrot, some microbenchmarks, and some general assessments about usage with Rails), and a broad(er) overview is crucial to assess the overall performance (I suppose that you can have workloads where the performance degrades).

Yes, it was introduced in Ruby 2.6 (2018): https://www.ruby-lang.org/en/news/2018/12/25/ruby-2-6-0-released/ https://www.ruby-lang.org/en/news/2018/12/25/ruby-2-6-0-rele...

pizza234 6y ago

Well, yes and no (althought the question is a bit open). It's more or less beta quality, and very primitive. It's discouraged to be used with Rails, so I'd be inclined to state that "we didn't get it yet". I'm also personally skeptical that the unusual approach (invoking a whole C compiler in a separate thread) will stand in the long term - but that's my own take.

jashmatthews 6y ago
The CRuby JIT is stable but whether it improves performance or not is workload dependent. It's simple not primitive. MJIT is designed to take advantage of a C compilers optimization. "Compile to C" worked for Chicken Scheme for the past 20 years and continues to be a popular way for functional langauges to compile. It's also how Nim works. It's all about different trade-offs.
- oblio 6y ago
  Chicken Scheme compiles ahead of time, doesn't it?
  - pansa2 6y ago
    Nim does too.
  - jashmatthews 6y ago
    Yeah but it's not an important distinction.
    - oblio 6y ago
      Isn't it? Compiling C takes time, with Ruby you would be doing it for each execution. Is there some catching involved?
      - jashmatthews 6y ago
        Almost everything is in a pre-compiled header. Its actually similar overhead to an LLVM based JIT. You wouldn’t want to do it for a browser JIT but for a server side app it’s OK.
        oblio 6y ago
        Does Ruby ship with a compiler? How will this work on Windows?
- pizza234 6y ago
  Are there any benchmarks available? It seems I can find very little (OptCarrot, some microbenchmarks, and some general assessments about usage with Rails), and a broad(er) overview is crucial to assess the overall performance (I suppose that you can have workloads where the performance degrades).