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YARV

Developer(s)	Koichi Sasada
Stable release	3.4.1  / 25 December 2024; 0 days ago (25 December 2024)
Repository	github.com/ruby/ruby
Written in	C
Operating system	Cross-platform
Predecessor	Ruby MRI
Type	Ruby Virtual Machine
License	Ruby License
Website	www.ruby-lang.org

YARV (Yet another Ruby VM) is a bytecode interpreter that was developed for the Ruby programming language by Koichi Sasada. The goal of the project was to greatly reduce the execution time of Ruby programs.

Since YARV has become the official Ruby interpreter for Ruby 1.9, it is also named KRI (Koichi's Ruby Interpreter), in the same vein as the original Ruby MRI, named in honor of Ruby's creator Yukihiro Matsumoto.

Performance

Benchmarks by rubychan.de showed significant increases in performance. Benchmarks by Antonio Cangiano showed speed improvements over other Ruby VMs, with 1.9 on average four times faster than the original interpreter. All evaluations comprised a mix of mostly synthetic benchmarks.

History

YARV was merged into the Ruby Subversion repository on January 1, 2007. It was released as part of Ruby 1.9.0 on December 26, 2007, replacing Ruby MRI.

See also

• Parrot virtual machine
• Rubinius
• Ruby programming language

References

1. ""Ruby 3.2.1 Released"".
2. Sasada, Koichi (16 October 2005). YARV: yet another RubyVM (PDF). p. 158. doi:10.1145/1094855.1094912. ISBN 1-59593-193-7. {{cite book}}: |website= ignored (help)
3. "Benchmarks: Ruby 1.8 and Ruby 1.9". rubychan.de.
4. Cangiano, Antonio (2007-12-16). "The Great Ruby Shootout". November 2007 tests
5. Cangiano, Antonio (2009-02-07). "The Great Ruby Shootout (December 2008)".
6. Yukihiro Matsumoto; Koichi Sasada (16 February 2007). "The Ruby VM: Episode I". Gray Productions. Archived from the original on May 26, 2012.
7. "merge YARV announcement by Koichi Sasada".

External links

• YARV home page Note: obsolete now that YARV is merged into Ruby
• YARV: Yet Another RubyVM ... on Rails? - Koichi Sasada's RubyConf 2006 presentation

v t e Ruby programming language
Implementations	Active Ruby MRI; YARV mruby JRuby RubyMotion Discontinued MacRuby IronRuby XRuby HotRuby MagLev Rubinius
IDE	Aptana Studio Komodo IDE RubyMine
Applications	Capistrano Hackety Hack Interactive Ruby Shell Pry Rake Redmine RSpec RubyGems RVM Chef Puppet Vagrant Homebrew CocoaPods
Libraries and frameworks	Adhearsion eRuby (RHTML) Merb Padrino RubyCocoa Ruby on Rails Shoes Sinatra QtRuby
Server software	mod_ruby Mongrel Phusion Passenger (mod_rails/mod_rack) Rack WEBrick
People	Yukihiro Matsumoto David Heinemeier Hansson why the lucky stiff Dave Thomas
Other	Document format why's (poignant) Guide to Ruby Ruby Central RubyKaigi RubyForge Ruby License
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