https://twitter.com/#!/merbist/status/155066956721045504 https://twitter.com/#!/nari_en/status/155064757567758336 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/41916

Ruby (MRI) trunk finally has a copy-on-write friendly GC. (meaning that forked processes won't copy the entire heap)