Takashi Kokubun
where else to find them
what they talk about
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where they keep going back
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on a stage with
- Aaron Pattersononce
- Arkadiusz Turlewiczonce
- Hiroshi Kawadaonce
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who talks about the same things
- Maxime Chevalier Boisvert13 talks
- Charles Oliver Nutter61 talks
- Thomas E Enebo26 talks
- Chris Seaton6 talks
- Jemma Issroff9 talks
- Maple Ong6 talks
| title | conference | date |
|---|---|---|
| Lightning-Fast Method Calls with Ruby 4.1 ZJIT | RubyKaigi 2026 | 2026-04-22 |
Proposes replacing per-call frame writes with driver frames in ZJIT, collapsing ~10–40 memory writes down to three by lazy-materializing frame metadata and… | ||
| ZJIT: The future of Ruby performance | San Francisco Ruby Conference 2025 | 2025-11-19 |
YJIT already delivers 10–20% production speedups; ZJIT is a new method-level JIT merged into Ruby 4.0 that adds a Ruby-aware high-level IR (ZJIT HR) and… | ||
| Evaluating YJIT’s Performance in a Production Context: A Pragmatic Approach | MPLR 2023 | 2023-10-22 |
YJIT is a CRuby-integrated JIT using Lazy Basic Block Versioning and a simple “compile after N calls” heuristic, with a multiplatform backend (x86_64 and… | ||
| Optimizing Production Performance with MRI JIT | RubyConf 2021 | 2021-11-08 |
Claims that MRI JIT finally speeds real Rails apps on Ruby 3.0 and gives measurable wins when tuned: use Ruby 3.0.0 (3.0.1 is broken, 3.0.2 differs), increase… | ||
| Performance Improvement of Ruby 2.7 JIT in Real World | RailsConf 2019 | 2019-05-01 |
Ruby 2.6 JIT speeds microbenchmarks like Optcarrot but slows real Rails workloads; Ruby 2.7 targets Rails-specific fixes. Experiments show linking many .o into… | ||
| The secret power of Ruby 2.6: JIT | RubyConf 2018 | 2018-11-28 |
Ruby 2.6’s MJIT is usable with --jit (or RUBYOPT="--jit") and can speed some workloads ~2.5× (Optcarrot to ~60 FPS) but also makes Rails/Sidekiq slower when it… | ||
| LLVM-based JIT compiler for MRI byTakashi Kokubun | RubyConf 2017 | 2017-11-15 |
Experiment builds an LLVM-based JIT for MRI that compiles YARV ISeq to LLVM IR or generates C and produces .so via Clang, uses inlining and LICM, runs… | ||
| Lightning Talks | RubyKaigi 2017 | 2017-09-18 |
Ten rapid demos show concrete results: Mastodon moves to ActivityPub with a unified actor model and a shared inbox not yet implemented; a WebSocket proxy… | ||
| Evaluate Ruby Without Ruby | RubyConf 2016 | 2016-11-10 |
Claim: Ruby DSL can run without MRI by embedding mruby, producing a single binary either via go-mruby (Go + mruby bridge) or mruby-cli (pure mruby). Built… | ||
| High Performance Template Engine: Guide to optimize your Ruby code | RubyKaigi 2015 | 2015-12-11 |
Built two faster Haml engines, Faml and Hamlit, by measuring with benchmark-ips and profiling with stackprof / rblineprof; attribute handling is classified… | ||
| Lightning Talks | RubyKaigi 2015 | 2015-12-11 |
Eight rapid demos: a GitHub‑API service that automates bundle updates and automatic security update service (claims about a ~90‑hour time saving); a Rails i18n… | ||
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