gistfile1.txt

rvm use ruby-1.9.3-p0-new_hash2
which ruby
/Users/yury/.rvm/rubies/ruby-1.9.3-p0-new_hash2/bin/ruby

/usr/bin/time -l rspec spec/models/import_spec.rb

       61.94 real        63.29 user         1.42 sys
 184184832  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
    164563  page reclaims
         8  page faults
         0  swaps
         0  block input operations
        39  block output operations
        85  messages sent
       399  messages received
         0  signals received
       905  voluntary context switches
      8156  involuntary context switches

       62.46 real        63.87 user         1.40 sys
 199901184  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
    169738  page reclaims
         8  page faults
         0  swaps
         4  block input operations
       126  block output operations
        85  messages sent
       399  messages received
         0  signals received
       377  voluntary context switches
      8558  involuntary context switches

       64.32 real        65.62 user         1.47 sys
 193404928  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
    166716  page reclaims
         8  page faults
         0  swaps
         0  block input operations
        15  block output operations
        85  messages sent
       399  messages received
         0  signals received
       630  voluntary context switches
     10024  involuntary context switches

rvm 1.9.3-p0-new_hash
which ruby                                       
/Users/yury/.rvm/rubies/ruby-1.9.3-p0-new_hash/bin/ruby

       72.08 real        71.70 user         1.80 sys
 210591744  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
    174156  page reclaims
      1218  page faults
         0  swaps
       294  block input operations
       339  block output operations
        85  messages sent
       399  messages received
         0  signals received
      3680  voluntary context switches
      8194  involuntary context switches

       67.56 real        68.85 user         1.45 sys
 203124736  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
    175766  page reclaims
         8  page faults
         0  swaps
         3  block input operations
        17  block output operations
        85  messages sent
       399  messages received
         0  signals received
       781  voluntary context switches
      9080  involuntary context switches

       66.89 real        68.23 user         1.53 sys
 208879616  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
    174989  page reclaims
         8  page faults
         0  swaps
         3  block input operations
        43  block output operations
        85  messages sent
       399  messages received
         0  signals received
       175  voluntary context switches
      9420  involuntary context switches

rvm 1.9.3-p0
which ruby
/Users/yury/.rvm/rubies/ruby-1.9.3-p0/bin/ruby

       66.28 real        66.07 user         1.73 sys
 221683712  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
    174990  page reclaims
      1216  page faults
         0  swaps
       342  block input operations
       355  block output operations
        85  messages sent
       399  messages received
         0  signals received
      3512  voluntary context switches
      5356  involuntary context switches

       67.33 real        68.62 user         1.60 sys
 218476544  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
    177485  page reclaims
         8  page faults
         0  swaps
         2  block input operations
        23  block output operations
        85  messages sent
       399  messages received
         0  signals received
       174  voluntary context switches
     10839  involuntary context switches

       63.73 real        65.16 user         1.43 sys
 220450816  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
    179718  page reclaims
        10  page faults
         0  swaps
        20  block input operations
        21  block output operations
        85  messages sent
       399  messages received
         0  signals received
       168  voluntary context switches
      8179  involuntary context switches