You must have missed this part: "Compared to JRuby on Java 6, JRuby on Java 7 without invokedynamic is around 25% faster, and JRuby with invokedynamic is nearl

You must have missed this part: "Compared to JRuby on Java 6, JRuby on Java 7 without invokedynamic is around 25% faster, and JRuby with invokedynamic is nearly 3 times faster."