Erjang With the JVM under the Hood

on YouTube ↗49m

" summary

Erjang compiles BEAM modules to JVM bytecode at load time and runs OTP (shell, inet, distribution, NIFs) on Java 7, using Kilim bytecode rewriting for coroutine-style processes and a trampoline for tail calls. Measured sequential code runs 2–10× faster than BEAM, a 10,000-node ring benchmark drops from ~12µs to ~2.8µs per message as the JVM JIT warms up, but global GC pauses and a minimal scheduler hurt latency and multicore scaling. Code reloading uses per-module classloaders; Elixir runs ~98% of tests.

AI-written summary · about

" chapters (12)

1. 0:00Intro
2. 0:35ABOUT FOUR YEARS AGO...
3. 2:32HIGHLIGHTS
4. 6:18JAVA / JVM "CONS"
5. 14:08RING: 100.000 PROCESSES
6. 16:18JIT COMPILER
7. 27:00ERJANG TYPES
8. 28:44TYPE/FLOW ANALYSIS
9. 30:03ENCODING PROCESSES
10. 41:24ELIXIR IS MY HOPE FOR ADOPTION
11. 42:49MAKING ELIXIR RUN
12. 44:24RUNNING ELIXIR

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