1. Ruby VMs
Jason Seifer, RailsEnvy.com
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2. 2

3. 3

4. MRI
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5. 5

6. “DeFacto” Standard
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7. Production Ready?
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8. YES
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9. YARV
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10. Production Ready?
10

11. No.
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12. MacRuby
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13. Production Ready?
13

14. No.
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15. XRuby
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16. Production Ready?
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17. No.
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18. 18

19. “The GemStone/S object server provides
an advanced platform for developing,
deploying and managing scalable, mission-
critical applications. It provides the robust,
scalable, secure and flexible environment
required for mission-critical applications,
and supports the high-availability online
environment demanded by 24X7
operations.”
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20. Production Ready?
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21. No.
21

22. Rubinius
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23. Rubinius VM
• “Ruby in Ruby”
• Used to be C and Ruby
• New VM written in C++
• Better Organized
• Better Tested
• More Potential
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24. LLVM
“The Low Level Virtual Machine, generally
known as LLVM, is a compiler
infrastructure, written in C++, which is
designed for compile-time, link-time, run-
time, and quot;idle-timequot; optimization of
programs written in arbitrary imperative
programming languages.”
Wikipedia
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25. WTF does that mean?
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26. Production Ready?
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27. No.
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28. IronRuby
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29. Iron Ruby
•Ruby on .Net
•Released under MPL
•Committed to making
IronRuby a first-class Ruby
implementation.
•Major milestone: 1.0
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30. IronRuby runs on the
DLR
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31. DLR Supported
Languages
• IronPython • Javascript
• IronRuby • Dynamic VB
31

32. 32

33. DLR runs on top of the
CLR
33

34. 34

35. Production Ready?
35

36. No.
36

37. JRuby
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38. JRuby Wins
38

39. Fatality
39

40. Production Ready?
40

41. YES
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42. JRuby Benefits
• Corporate backing.
• Use existing Java code.
• Existing Java infrastructure.
• Most performant Ruby implementation.
• Multi-threaded.
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43. Right now, using JRuby
is the only way to have
true multi-threaded
Ruby programs.
43

44. $ cd <application>
$ glassfish
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45. Use JRuby for your
enterprise Ruby
applications.
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46. Thank you.
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