Latest red/black tree benchmark results on Java 7, with and without invokedynamic

gistfile1.txt

system ~/projects/jruby $ jruby -v bench/bench_red_black.rb 
jruby 1.7.0.dev (ruby-1.8.7-p352) (2011-12-18 43cbc21) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_29) [darwin-x86_64-java]
2.748
1.902
1.87
1.877
1.873
1.868
1.864
1.876
1.884
1.886

system ~/projects/jruby $ pickjdk 5
New JDK: 1.7.0u.jdk

system ~/projects/jruby $ jruby -v -Xcompile.invokedynamic=false bench/bench_red_black.rb 
jruby 1.7.0.dev (ruby-1.8.7-p352) (2011-12-18 43cbc21) (OpenJDK 64-Bit Server VM 1.7.0-u2-b21) [darwin-amd64-java]
2.367
1.415
1.378
1.522
1.416
1.395
1.405
1.416
1.415
1.395

system ~/projects/jruby $ jruby -v bench/bench_red_black.rb 
jruby 1.7.0.dev (ruby-1.8.7-p352) (2011-12-18 43cbc21) (OpenJDK 64-Bit Server VM 1.7.0-u2-b21) [darwin-amd64-java]
3.225
1.064
0.792
0.728
1.333
1.005
0.677
0.687
0.673
0.679

system ~/projects/jruby $ rvm 1.9.3 do ruby bench/bench_red_black.rb 
3.426258
3.415173
3.475542
3.497635
3.43508
3.491093
3.413686
3.542578
3.437846
3.626295

There will always be cases where we win or where we lose. Java 7's features have made the win cases more frequent and more impressive. In general if we are slower we consider it a bug and would like bug reports.