ruby 1.9.3 vs 2.0.0 vs rbx (rails env loading)

ruby-1.9.3-vs-2.0.0-vs-rbx-head.txt

>> time rails runner "puts 1"

ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin11.4.2]
       22.35 real        18.03 user         2.80 sys
       19.59 real        17.33 user         2.18 sys
       18.62 real        16.53 user         2.02 sys
       18.81 real        16.61 user         2.14 sys


ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin12.2.1]
        8.72 real         7.10 user         1.56 sys
        8.28 real         6.77 user         1.48 sys
        8.39 real         6.87 user         1.49 sys
        8.33 real         6.82 user         1.47 sys


rubinius 2.0.0.rc1 (1.9.3 d7bc796f yyyy-mm-dd JI) [x86_64-apple-darwin12.2.1]
       37.52 real        54.82 user         5.59 sys
       36.79 real        42.91 user         4.24 sys
       37.51 real        43.99 user         4.30 sys
       36.75 real        42.90 user         4.26 sys



>> time rake -T > /dev/null

ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin11.4.2]
       14.95 real        13.12 user         1.80 sys
       15.78 real        13.78 user         1.92 sys
       16.14 real        14.05 user         2.03 sys
       15.56 real        13.62 user         1.90 sys


ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin12.2.1]
        7.06 real         5.58 user         1.44 sys
        6.64 real         5.34 user         1.28 sys
        6.60 real         5.30 user         1.28 sys
        6.71 real         5.38 user         1.31 sys


rubinius 2.0.0.rc1 (1.9.3 d7bc796f yyyy-mm-dd JI) [x86_64-apple-darwin12.2.1]
       29.01 real        32.42 user         3.77 sys
       28.81 real        32.19 user         3.78 sys
       30.60 real        33.73 user         4.04 sys
       29.40 real        32.61 user         3.78 sys