From: Hiroshi Nakamura Date: 2011-06-23T19:46:46+09:00 Subject: [ruby-core:37317] Re: [Ruby 1.9 - Bug #3924] Performance bug (in require?) Hi, 2011/6/20 Jaros��aw Skrzypek : > You might be also interested in my very short patch: https://gist.github.com/1035322 Basically it reorders conditions to start with fastest ones and execute slower ones only if needed. Here is ��also some description: http://www.lunarlogicpolska.com/blog/2011/06/14/tracing-processes-for-fun-and-profit.html Good perf improvement. Yugui-san, it could be a candidate for 1.9.2 medication, if the backporting 1.9.3dev patches are big to apply. Regards, // NaHi