MRI-1.8.6-p399: ruby 1.8.6 (2010-02-05 patchlevel 399) [x86_64-linux]
  /usr/bin/time /home/kurt/local/ruby/1.8.6-p399/bin/ruby  problem/string_build.rb "MRI-1.8.6-p399" "measurement/string_build-MRI-1.8.6-p399.rb"
warmup: 5000000.. GO!
                                              user     system      total        real
n = 5000000 : String#+                   11.300000   0.000000  11.300000 ( 11.298186)
n = 5000000 : String Interpolation        4.880000   0.000000   4.880000 (  4.886864)

FINISHED!
34.51user 0.00system 0:34.51elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+8outputs (0major+687minor)pagefaults 0swaps

  MRI-1.8.7: ruby 1.8.7 (2010-04-20 patchlevel 254) [x86_64-linux]
  /usr/bin/time /home/kurt/local/ruby/1.8.7-git/bin/ruby  problem/string_build.rb "MRI-1.8.7" "measurement/string_build-MRI-1.8.7.rb"
warmup: 5000000.. GO!
                                              user     system      total        real
n = 5000000 : String#+                    9.830000   0.000000   9.830000 (  9.832910)
n = 5000000 : String Interpolation        4.640000   0.000000   4.640000 (  4.634464)

FINISHED!
29.54user 0.02system 0:29.55elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+8outputs (0major+695minor)pagefaults 0swaps

  MRI-1.9: ruby 1.9.2dev (2010-05-05 trunk 27618) [x86_64-linux]
  /usr/bin/time /home/kurt/local/ruby/trunk/bin/ruby  problem/string_build.rb "MRI-1.9" "measurement/string_build-MRI-1.9.rb"
warmup: 5000000.. GO!
                                              user     system      total        real
n = 5000000 : String#+                    3.420000   0.000000   3.420000 (  3.422943)
n = 5000000 : String Interpolation        2.890000   0.000000   2.890000 (  2.893667)

FINISHED!
12.64user 0.00system 0:12.64elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+8outputs (0major+1056minor)pagefaults 0swaps

  JRuby-1.4: jruby 1.4.1 (ruby 1.8.7 patchlevel 174) (2010-04-26 ea6db6a) (OpenJDK 64-Bit Server VM 1.6.0_0) [amd64-java]
  /usr/bin/time /home/kurt/local/ruby/jruby-1.4.1/bin/jruby --fast problem/string_build.rb "JRuby-1.4" "measurement/string_build-JRuby-1.4.rb"
warmup: 5000000.. GO!
                                              user     system      total        real
n = 5000000 : String#+                    3.270000   0.000000   3.270000 (  3.222000)
n = 5000000 : String Interpolation        2.431000   0.000000   2.431000 (  2.432000)

FINISHED!
13.40user 0.31system 0:12.86elapsed 106%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+72outputs (1major+67366minor)pagefaults 0swaps

  Rubinius: rubinius 1.0.0-rc4 (1.8.7 9098d4d7 2010-03-31 JI) [x86_64-unknown-linux-gnu]
  /usr/bin/time /home/kurt/local/rubinius/master/bin/rbx  problem/string_build.rb "Rubinius" "measurement/string_build-Rubinius.rb"
warmup: 5000000.. GO!
                                              user     system      total        real
n = 5000000 : String#+                    7.384131   0.000000   7.384131 (  7.384128)
n = 5000000 : String Interpolation        1.986118   0.000000   1.986118 (  1.986136)

FINISHED!
19.45user 0.03system 0:19.39elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+32outputs (0major+13974minor)pagefaults 0swaps