Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Towards Ruby 4 JIT / RubyKaigi 2022
Search
Takashi Kokubun
September 08, 2022
Programming
3
10k
Towards Ruby 4 JIT / RubyKaigi 2022
RubyKaigi 2022
Takashi Kokubun
September 08, 2022
Tweet
Share
More Decks by Takashi Kokubun
See All by Takashi Kokubun
YJIT Makes Rails 1.7x faster / RubyKaigi 2024
k0kubun
7
8.4k
Ruby JIT Hacking Guide / RubyKaigi 2023
k0kubun
2
9.2k
YJIT: Dive into Ruby's JIT compiler written in Rust / Rust.Tokyo 2022
k0kubun
1
1.9k
Optimizing Production Performance with MRI JIT / RubyConf 2021
k0kubun
1
380
Why Ruby's JIT was slow / RubyKaigi Takeout 2021
k0kubun
3
1.8k
数時間かかる週一リリースを毎日何度も爆速でできるようにするまで / CI/CD Conference 2021
k0kubun
21
14k
Ruby 3 JIT's roadmap / RubyConf China 2020
k0kubun
0
710
Ruby 3.0 JIT on Rails
k0kubun
9
8.9k
JIT ロードマップ / Ruby 3 さみっと
k0kubun
2
1.3k
Other Decks in Programming
See All in Programming
最近追加した型の紹介とその振り返り
aki19035vc
0
180
Architectures with Lightweight Stores: New Rules and Options
manfredsteyer
PRO
0
100
Ruby メモリ管理 プログラミング
megmogmog1965
0
130
DDDを志して3年経ったら「DDDの皮を被ったクリーンアーキテクチャ」になった話【デブサミ2024夏】
texmeijin
1
620
Cloudflare Workers x AWS Lambdaの組み合わせユースケース / Cloudflare Workers x AWS Lambda Combination Use Case
seike460
PRO
2
310
日付と正規化
megmogmog1965
0
140
Clean Architecture by TypeScript & NestJS
ryounasso
0
150
しくじり先生 Image Matching Challenge 2024 編
goosehaaan
0
810
開発部に不満を持っていたCSがエンジニアにジョブチェンしてわかった「勝手に諦めない」ことの大切さ
sakuraikotone
28
16k
feature環境をGitHub ActionsとCloudFormationでいい感じに管理する
nealle
2
310
AWSでゲームサーバーを運用! Amazon GameLiftのお話
iriikeita
0
200
Rubyのパフォーマンスプロファイリングの改善 / Enhancing performance profiling for Ruby
osyoyu
1
410
Featured
See All Featured
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
23
1.9k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
26
2.1k
ParisWeb 2013: Learning to Love: Crash Course in Emotional UX Design
dotmariusz
105
6.8k
Music & Morning Musume
bryan
43
5.9k
Teambox: Starting and Learning
jrom
130
8.6k
Speed Design
sergeychernyshev
9
270
StorybookのUI Testing Handbookを読んだ
zakiyama
15
4.9k
GraphQLの誤解/rethinking-graphql
sonatard
59
9.6k
Writing Fast Ruby
sferik
623
60k
Designing on Purpose - Digital PM Summit 2013
jponch
113
6.6k
The Art of Programming - Codeland 2020
erikaheidi
48
13k
Fantastic passwords and where to find them - at NoRuKo
philnash
42
2.7k
Transcript
Towards Ruby 4 JIT @k0kubun
@k0kubun Maintain: MJIT, Haml, ERB Shopify team
GitHub Sponsors
Haml 6
Introduction to Ruby JIT
How does Ruby JIT work? Ruby
How does Ruby JIT work? 1 + 2 Ruby Abstract
Syntax Tree
How does Ruby JIT work? 1 + 2 putobject 1
putobject 2 opt_plus leave Ruby Abstract Syntax Tree Instruction Sequence (Bytecode)
How does Ruby JIT work? 1 + 2 putobject 1
putobject 2 opt_plus leave Ruby Abstract Syntax Tree Instruction Sequence (Bytecode) Machine Code
How does Ruby JIT work?
CRuby JIT 1: MJIT
CRuby JIT 2: YJIT
Current CRuby JITs speed.yjit.org
Current CRuby JITs speed.yjit.org
Current CRuby JITs • YJIT • Available since Ruby 3.1
• --jit or --yjit • MJIT • Available since Ruby 2.6 • --mjit
Current CRuby JITs • YJIT • Ruby 3.1: x86_64 only,
no code GC, written in C • Ruby 3.2: arm64 support, (hopefully) code GC, written in Rust • MJIT • Ruby 3.1: Stable-ish, portable, native threads, written in C • Ruby 3.2: Experimental, fork + SIGCHLD, written in Ruby
MJIT in Ruby
None
None
mjit.rb: Secret "standard library" in Ruby 3.2 • mjit.rb •
Even more powerful than TracePoint • You can monkey-patch CRuby JIT • No compatibility guarantee • Every module is private, so const_get is required
BYOJ: Bring Your Own JIT
BYOJ: Bring Your Own JIT • Load and pause MJIT
with --mjit=pause • Define RubyVM::MJIT.compile • Use RubyVM::MJIT.const_get(:C) to hack RubyVM • Call RubyVM::MJIT.resume to start JIT With Ruby 3.2:
YJIT-style JIT • Monkey-patch RubyVM::MJIT.compile
MJIT-style JIT • Monkey-patch RubyVM::MJIT::Compiler.compile
MJIT-style JIT
Everyone is writing CRuby JIT
Benchmarking Ruby JIT
yjit-bench
yjit-bench • yjit-bench has three kinds of benchmarks: 1. Headlining
Benchmarks 2. Other Benchmarks 3. Micro Benchmarks
1. Headlining benchmarks • activerecord • hexapdf • liquid-render •
mail • psych-load • railsbench ✉
2. Other Benchmarks • binarytrees, fankuchredux, nbody • chunky_png •
erubi, erubi_rails • lee • optcarrot • rubykon
3. Micro Benchmarks • 30k_ifelse, 30k_methods • cfunc_itself, str_concat •
fib • getivar, setivar • keyword_args • respond_to
None
Benchmark Your Own JIT • ./run_benchmarks.rb -e “/path/to/ruby --any-option” •
Pass multiple -e options to compare different JITs
Towards Ruby 4 JIT
My wish on Ruby 4 JIT • I want Ruby
4 to be as fast as Java or JavaScript • Ruby 4's performance should be a reason to leave Python
None
More Concrete Examples
None
None
None
Ruby 4 Canary • true is mov-ed (immediate) • No
opt_* VM instruction • Constant folding • Ruby / C method inlining
Ruby 4 Canary’ • Single branch instruction to access @one
• Single register to access two • No heap allocation • No stack frame
None
None
Ruby 4 Canary 2 • 5000050000 is mov-ed (immediate) •
Ruby -> C -> Ruby inlining
How can we get there?
Optimization Challenges 1. Constants 2. Variables 3. Method calls 4.
Garbage collection
1. Constants
1. Constants
1. Constants
1. Constants
1. Constants
1. Constants
1. Constants
1. Constants
2. Variables
2. Variables
2. Variables
2. Variables
2. Variables
2. Variables
2. Variables
2. Variables
2. Variables
2. Variables
2. Variables
2. Variables 2021 2022 (tomorrow)
3. Method calls
3. Method calls
3. Method calls
3. Method calls
3. Method calls
3. Method calls
3. Method calls • Code locality • Method inlining: C
㱻 Ruby • Pass arguments with native ABI • Deoptimization on redefinition or interruption (or TracePoint)
4. Garbage collection
4. Garbage collection
4. Garbage collection
Next Steps • We still have a lot of rooms
for improvements on yjit-bench • More cross-instruction optimizations • More method inlining over Ruby and C
Conclusion • Build your own JIT with Ruby 3.2 •
Benchmark your JIT with yjit-bench