JRuby & MRI call vs send

run.sh

#!/bin/sh

source ~/.bash_profile

echo "======================== JRUBY ========================="
rvm use jruby &&
ruby -v &&

TIMES=100_000 ruby test.rb
TIMES=1000_000 ruby test.rb
TIMES=100_000_000 ruby test.rb


echo "======================== MRI ========================="
rvm use jruby &&
rvm use 1.9.3 &&
ruby -v &&

TIMES=100_000 ruby test.rb
TIMES=1000_000 ruby test.rb
TIMES=100_000_000 ruby test.rb

terminal.sh

> sh run.sh 
======================== JRUBY =========================
Using /Users/dnagir/.rvm/gems/jruby-1.6.5.1
jruby 1.6.5.1 (ruby-1.9.2-p136) (2011-12-27 1bf37c2) (Java HotSpot(TM) Client VM 1.6.0_29) [darwin-i386-java]
Benchmark for 100000 iterations
      user     system      total        real
send  0.068000   0.000000   0.068000 (  0.069000)
call  0.017000   0.000000   0.017000 (  0.017000)
Benchmark for 1000000 iterations
      user     system      total        real
send  0.460000   0.000000   0.460000 (  0.460000)
call  0.145000   0.000000   0.145000 (  0.145000)
Benchmark for 100000000 iterations
      user     system      total        real
send 43.735000   0.000000  43.735000 ( 43.735000)
call 14.309000   0.000000  14.309000 ( 14.309000)
======================== MRI =========================
Using /Users/dnagir/.rvm/gems/jruby-1.6.5.1
Using /Users/dnagir/.rvm/gems/ruby-1.9.3-p0
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.2.0]
Benchmark for 100000 iterations
       user     system      total        real
send  0.040000   0.000000   0.040000 (  0.044717)
call  0.020000   0.000000   0.020000 (  0.021673)
Benchmark for 1000000 iterations
       user     system      total        real
send  0.430000   0.000000   0.430000 (  0.439424)
call  0.220000   0.000000   0.220000 (  0.221586)
Benchmark for 100000000 iterations
       user     system      total        real
send 46.150000   0.010000  46.160000 ( 46.163589)
call 23.390000   0.000000  23.390000 ( 23.387312)

test.rb

require 'benchmark'

class Sample
  def hello
  end
end

max = ENV['TIMES'].to_i
puts "Benchmark for #{max} iterations"

Benchmark.bm do |x|
  x.report("send") { max.times {|n| Sample.new.send("hello") } }
  x.report("call") { max.times {|n| Sample.new.hello } }
end