Ruby 1.8.6, 1.9, and JRuby running on Java 1.5, 1.6, and 1.7 compared
code: http://svn.concord.org/svn/projects/trunk/common/ruby/benchmarks/mergesort_benchmarks/
mergesort benchmark adapted from:
The measurements below are from running the mergesort test twice in sucession:
Ruby version time speed *
------------------------------------------------
1.8.6 patchlevel 114 9.33 0.42
1.9 svn rev: 20339 3.90 1.0
Java 1.5
jruby 3.96 0.99
jruby --server 3.00 1.30
jruby --fast 3.34 1.17 *
jruby --fast --server 2.42 1.61 *
Java 1.6
jruby, 1.85 2.10
jruby --server, 1.90 2.06
jruby --fast, 1.57 2.47 *
jruby --fast --server, 1.67 2.34 *
Java 1.7
jruby 2.26 1.73
jruby --server 2.06 1.90
jruby --fast 2.04 1.91 *
jruby --fast --server 1.75 2.23 *
* speed normalized to Ruby 1.9, higher is better
* running jruby with the '--fast' option is experimental
see: http://wiki.jruby.org/wiki/Performance_Tuning
Mergesort times
Mergesort speeds
Details
computer: MacBook Pro, 2.5GHz, 4GB memory, Mac OS X 10.5.6 Ruby 1.8.6: ruby 1.8.6 (2008-03-03 patchlevel 114) [universal-darwin9.0] Ruby 1.9: trunk: svn rev:20339 (Feb 2 2009) JRuby: jruby 1.2.0 (ruby 1.8.6 patchlevel 287) (2009-02-04 rev 6586) [i386-java] Java 1.5: java version "1.5.0_16" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-b06-284) Java HotSpot(TM) Client VM (build 1.5.0_16-133, mixed mode, sharing) Java 1.6: java version "1.6.0_07" Java(TM) SE Runtime Environment (build 1.6.0_07-b06-153) Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_07-b06-57, mixed mode) Java 1.7: openjdk version "1.7.0-internal" OpenJDK Runtime Environment (build 1.7.0-internal-stephen_2009_01_25_23_54-b00) OpenJDK Server VM (build 14.0-b10, mixed mode)