3 ms·

I didn't know Ruby has three different JITs

• hartator 11mo ago
  Yes, specially ZJIT is news to me.
  • rurban 11mo ago
    You can ignore it. It's just that the Japanese cannot allow an external jit dominate, and so they came up with a much simplier tier 0 method jit, which will never be able to surpass Maxime's yjit.
• shevy-java 11mo ago
  Mostly the newer ones try to improve the older ones. I guess at some later point one will dominate and the others will go sleep mode. Just like in the movie Highlander - there can only be one. (I couldn't name offhand which JIT is the main one right now ... I always think it is from Takashi Kokubun but that may now be outdated. MJIT YJIT ZJIT HUJIT WAJIT WTFJIT GRANDMAJIT - too many JITs.)
• Lio 11mo ago
  I was actually hoping it would be four JITs and we'd get Tenderlove's tiny FFI JIT too. https://railsatscale.com/2025-02-12-tiny-jits-for-a-faster-ffi/ https://railsatscale.com/2025-02-12-tiny-jits-for-a-faster-f...
• pjmlp 11mo ago
  It actually has several more, if you take into account JRuby + all JVM implementations (OpenJDK based distros, OpenJ9, Azul, PTC,...), ART even if not JVM proper with Ruboto, and TruffleRuby on GraalVM.