Ruby Lugdunum 2012: Message in a Bottle

Transcript

1. MESSAGE IN A BOTTLE Konstantin Haase Ruby Lugdunum June 23,

   2012

2. @konstantinhaase (I’m sorry about that) rkh on github

3. Sinatra Rack, Tilt, Rubinius, ...

4. None
5. None
6. None
7. None
8. None
9. None

10. Ruby 1.8 is slow because it's interpreted.

11. Surprise! Ruby 1.9 is interpreted, too.

12. THANKS

13. Ruby

14. Internals

15. Performance

16. None

17. RubyMotion

18. WHAT WE’LL LOOK INTO MRI: method dispatch and execution Rubinius:

    inline caches and JIT JRuby: invokedynamic
19. None

20. THEY JUST LOVE BYTECODE

21. None

22. MRI

23. Rubinius

24. JRuby (JVM 1.6)

25. None

26. Source Code Parser Parse Tree Interpreter Bytecode Compiler Bytecode Interpreter

    JIT Machine Code CPU VM

27. THE PLAN Find Method Execute Method

28. Performance

29. HOW TO SPEED UP? Find Method Faster Execute Method Faster

30. FIND FASTER Inline Cache (aka Call/ Send Site Cache) Lookup

    Cache Inlining

31. EXECUTE FASTER Reduce operations Just-in-time compilation Speed up search

32. None

33. rb_method_entry rb_method_entry_without_cache search_method

34. None
35. None
36. None
37. None
38. None
39. None
40. None
41. None
42. None
43. None
44. None
45. None
46. None

47. SPECIALIZED METHODS cached bytecode code with breakpoints specialized for arguments

    JITed code
48. None
49. None
50. None
51. None
52. None
53. None
54. None

55. Process invokedynamic JVM method bootstrap guard fallback

56. None

57. THANKS