sstephenson/ruby-build — pull request #327 by dmdeller (2013-03-14 22:00:25+00:00)
Title: 1.9.3-p125 with gcdata patch

This is useful for profiling for garbage collection and memory usage.

Based on rbenv instructions here: http://www.synbioz.com/blog/optimize_ruby_code

Further reference: http://guides.rubyonrails.org/performance_testing.html#installing-gc-patched-mri