Ruby Lugdunum 2012: Message in a Bottle

Transcript

1. MESSAGE IN
   A BOTTLE
   Konstantin Haase
   Ruby Lugdunum
   June 23, 2012
   

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

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

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

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11. Surprise!
    Ruby 1.9 is interpreted, too.
    

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12. THANKS
    

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13. Ruby
    

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14. Internals
    

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15. Performance
    

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17. RubyMotion
    

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18. WHAT WE’LL
    LOOK INTO
    MRI: method dispatch and execution
    Rubinius: inline caches and JIT
    JRuby: invokedynamic
    

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20. THEY JUST LOVE
    BYTECODE
    

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22. MRI
    

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23. Rubinius
    

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24. JRuby (JVM 1.6)
    

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26. Source Code
    Parser
    Parse Tree
    Interpreter Bytecode Compiler
    Bytecode
    Interpreter JIT
    Machine Code
    CPU
    VM
    

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27. THE PLAN
    Find Method
    Execute Method
    

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28. Performance
    

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

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

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

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33. rb_method_entry
    rb_method_entry_without_cache
    search_method
    

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

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55. Process
    invokedynamic
    JVM method
    bootstrap guard fallback
    

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57. THANKS
    

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