~/talk

Java Goes AOT

on YouTube 41m
Talkat JVM Language Summit 2015 · 2015-08-10..08-12· [java]

speaker

name:Christian Thalinger
links:none on file

resources

video:https://youtu.be/Xybzyv8qbOc
slides:none on file

summary

An experimental AOT pipeline compiles java.base into shared libraries on Linux x86_64 using Graal as the compiler and libelf to produce ELF shared objects, with a planned jlink plugin. It currently inlines only static/final leaf methods, compiles many paths to avoid deopts, and reports up to 30% startup faster on some workloads; java.base produces ~44k compiled methods (~120 MB library) and per-instance code cache can shrink by ~22 MB. Bootstrap of the compiler itself drops from ~28 s to ~263 ms when a few methods are precompiled.

AI-written summary · about

chapters (13)

  1. 0:00Intro
  2. 1:00Program Agenda
  3. 4:12AOT compiler (1/2)
  4. 10:41Container format
  5. 13:03Current status
  6. 21:01javac Performance
  7. 22:50javac compiling 1.7 javac
  8. 24:37JRuby 9k startup
  9. 28:48SPECjvm98
  10. 31:34SPECjbb2013: Sharing
  11. 33:56Shared library sharing
  12. 36:11Graal bootstrap (1/2)
  13. 39:09Graal- first compilations

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