Hm, that's unfortunately to hear. Ruby 1.8 implemented green threads by using stack copying. It was discovered that this resulted in significant performance hit

Hm, that's unfortunately to hear. Ruby 1.8 implemented green threads by using stack copying. It was discovered that this resulted in significant performance hits: http://timetobleed.com/fixing-threads-in-ruby-18-a-2-10x-performance-boost/ http://timetobleed.com/fixing-threads-in-ruby-18-a-2-10x-per...