MRI does GC runs like they're going out of style. I recently did some comparisons with JRuby and saw 100x more GC runs on MRI, and easily 10x more time doing th

MRI does GC runs like they're going out of style. I recently did some comparisons with JRuby and saw 100x more GC runs on MRI, and easily 10x more time doing those runs. GC::Profiler ends up eating a crapload of memory as a result. Check out slide 37 and surrounding slides. If you're complaining about GC and aren't giving JRuby a shot, you're missing out. http://www.slideshare.net/CharlesNutter/why-jruby-rubyconf-2012 http://www.slideshare.net/CharlesNutter/why-jruby-rubyconf-2...