~/NetBeansProjects/jruby ➔ jruby -J-server -rbenchmark -e "def foo; if false; eval; end; end; Benchmark.bmbm {|bm| bm.report { 10_000_000.times { foo } } }"
Rehearsal ------------------------------------
   2.661000   0.000000   2.661000 (  2.661000)
--------------------------- total: 2.661000sec

       user     system      total        real
   2.222000   0.000000   2.222000 (  2.222000)
~/NetBeansProjects/jruby ➔ ruby -rbenchmark -e "def foo; if false; eval; end; end; Benchmark.bmbm {|bm| bm.report { 10_000_000.times { foo } } }"
Rehearsal ------------------------------------
   3.410000   0.020000   3.430000 (  3.442044)
--------------------------- total: 3.430000sec

       user     system      total        real
   3.410000   0.020000   3.430000 (  3.435986)
~/NetBeansProjects/jruby ➔ ../ruby1.9/ruby -I ../ruby1.9/lib -rbenchmark -e "def foo; if false; eval; end; end; Benchmark.bmbm {|bm| bm.report { 10_000_000.times { foo } } }"
Rehearsal ------------------------------------
   2.090000   0.010000   2.100000 (  2.099342)
--------------------------- total: 2.100000sec

       user     system      total        real
   2.080000   0.010000   2.090000 (  2.151790)