JRuby Fiber perf compared to 1.9.3

gistfile1.txt

# Ruby 1.9.3

ruby-1.9.3-p0 ~/projects/jruby $ ruby -v bench/bench_fiber_ring.rb 5 100 1000
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin10.8.0]
bench/bench_fiber_ring.rb:23: warning: mismatched indentations at 'end' with 'def' at 21
100 fibers / 1000 passes:   0.150000   0.000000   0.150000 (  0.155022)
100 fibers / 1000 passes:   0.150000   0.000000   0.150000 (  0.153985)
100 fibers / 1000 passes:   0.150000   0.000000   0.150000 (  0.153822)
100 fibers / 1000 passes:   0.150000   0.000000   0.150000 (  0.152370)
100 fibers / 1000 passes:   0.160000   0.000000   0.160000 (  0.155857)

# JRuby default, using threads for fibers

ruby-1.9.3-p0 ~/projects/jruby $ jruby --1.9 bench/bench_fiber_ring.rb 10 100 1000
100 fibers / 1000 passes:   1.871000   0.000000   1.871000 (  1.871000)
100 fibers / 1000 passes:   1.495000   0.000000   1.495000 (  1.495000)
100 fibers / 1000 passes:   1.278000   0.000000   1.278000 (  1.278000)
100 fibers / 1000 passes:   1.257000   0.000000   1.257000 (  1.257000)
100 fibers / 1000 passes:   1.291000   0.000000   1.291000 (  1.291000)
100 fibers / 1000 passes:   1.102000   0.000000   1.102000 (  1.103000)
100 fibers / 1000 passes:   1.098000   0.000000   1.098000 (  1.099000)
100 fibers / 1000 passes:   1.139000   0.000000   1.139000 (  1.139000)
100 fibers / 1000 passes:   1.180000   0.000000   1.180000 (  1.180000)
100 fibers / 1000 passes:   1.097000   0.000000   1.097000 (  1.097000)

# JRuby on OpenJDK with coroutine support

ruby-1.9.3-p0 ~/projects/jruby $ jruby --1.9 -Xfiber.coroutines=true bench/bench_fiber_ring.rb 10 100 1000100 fibers / 1000 passes:   0.821000   0.000000   0.821000 (  0.820000)
100 fibers / 1000 passes:   0.582000   0.000000   0.582000 (  0.582000)
100 fibers / 1000 passes:   0.355000   0.000000   0.355000 (  0.354000)
100 fibers / 1000 passes:   0.292000   0.000000   0.292000 (  0.292000)
100 fibers / 1000 passes:   0.307000   0.000000   0.307000 (  0.307000)
100 fibers / 1000 passes:   0.260000   0.000000   0.260000 (  0.260000)
100 fibers / 1000 passes:   0.223000   0.000000   0.223000 (  0.223000)
100 fibers / 1000 passes:   0.246000   0.000000   0.246000 (  0.246000)
100 fibers / 1000 passes:   0.226000   0.000000   0.226000 (  0.226000)
100 fibers / 1000 passes:   0.222000   0.000000   0.222000 (  0.222000)

# JRuby on OpenJDK with coroutine support, invokedynamic disabled

ruby-1.9.3-p0 ~/projects/jruby $ jruby --1.9 -Xcompile.invokedynamic=false -Xfiber.coroutines=true bench/bench_fiber_ring.rb 10 100 1000
100 fibers / 1000 passes:   0.298000   0.000000   0.298000 (  0.299000)
100 fibers / 1000 passes:   0.114000   0.000000   0.114000 (  0.114000)
100 fibers / 1000 passes:   0.095000   0.000000   0.095000 (  0.095000)
100 fibers / 1000 passes:   0.099000   0.000000   0.099000 (  0.099000)
100 fibers / 1000 passes:   0.102000   0.000000   0.102000 (  0.102000)
100 fibers / 1000 passes:   0.085000   0.000000   0.085000 (  0.085000)
100 fibers / 1000 passes:   0.091000   0.000000   0.091000 (  0.091000)
100 fibers / 1000 passes:   0.113000   0.000000   0.113000 (  0.113000)
100 fibers / 1000 passes:   0.084000   0.000000   0.084000 (  0.084000)
100 fibers / 1000 passes:   0.080000   0.000000   0.080000 (  0.080000)