sample/concat.rb (taken from hotruby.yukoba.jp/benchmark/bm_loop_times.html)
rbv8: 0.987 sec
Firefox 3: 3.636 sec
Safari 3: 4.368 sec
Opera 9.50: 4.679 sec
Ruby 1.8.6: 9.565 sec
Ruby 1.9.0: 9.669 sec
Rubinius 0.8.0: 15.576 sec
JRuby 1.1 b1: 42.691 sec
On the other hand, the other scripts in sample are super slow on rbv8...
Source: https://habr.com/ru/post/38876/