独立Ruby代码（gem）的性能和资源测试

require \'profiler\'

def functionToBeProfiled
  a = 0
  1000.times do |i|
    a = a + i * rand
  end
end

Profiler__::start_profile
functionToBeProfiled
Profiler__::stop_profile
Profiler__::print_profile($stdout)

  %   cumulative   self              self     total
 time   seconds   seconds    calls  ms/call  ms/call  name
 16.58     0.03      0.03        1    31.00    93.00  Integer#times
 16.58     0.06      0.03     1000     0.03     0.03  Kernel.rand
  8.56     0.08      0.02        3     5.33    10.33  RubyLex#identify_identifier
  8.56     0.09      0.02       10     1.60     6.20  IRB::SLex::Node#match_io
  8.56     0.11      0.02       84     0.19     0.19  Kernel.===
  8.56     0.13      0.02      999     0.02     0.02  Float#+
  8.56     0.14      0.02        6     2.67     5.33  String#gsub!