Alan Wu
Alan Wu
  • @alanwusx

Alan is a Ruby committer and a member of the Ruby and Rails infrastructure team at Shopify. Alan mostly speaks English even though in university he took Japanese lessons.

Stories from developing YJIT

YJIT is CRuby's second just-in-time compiler first released with Ruby 3.1.0. Much sweat and tears were shed during YJIT's development. What are the performance goals of YJIT and how are we going for them? How do CPUs react to YJIT's output? What is it like to retrofit a JIT compiler into a runtime system with a long history? Why is Rust involved now?

Presentation Material

Recorded video