Ruby VMs
Jason Seifer, RailsEnvy.com
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MRI
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“DeFacto” Standard
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Production Ready?
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YES
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YARV
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Production Ready?
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No.
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MacRuby
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Production Ready?
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No.
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XRuby
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Production Ready?
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No.
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“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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Production Ready?
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No.
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Rubinius
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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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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 \"idle-time\" optimization of
programs written in arbitrary imperative
programming languages.”
Wikipedia
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WTF does that mean?
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Production Ready?
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No.
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IronRuby
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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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IronRuby runs on the
DLR
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DLR Supported
Languages
• IronPython • Javascript
• IronRuby • Dynamic VB
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DLR runs on top of the
CLR
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Production Ready?
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No.
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JRuby
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JRuby Wins
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Fatality
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Production Ready?
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YES
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JRuby Benefits
• Corporate backing.
• Use existing Java code.
• Existing Java infrastructure.
• Most performant Ruby implementation.
• Multi-threaded.
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Right now, using JRuby
is the only way to have
true multi-threaded
Ruby programs.
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$ cd <application>
$ glassfish
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Use JRuby for your
enterprise Ruby
applications.
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Thank you.
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