Rubinius vs MRI

gistfile1.rb

flow.task do
  2.times do
    25_000_000.times {}
  end
end

MRI       2.400000   0.000000   2.400000 (  2.398510)
Rubinius  0.834417   0.000243   0.834660 (  0.830375)

2.times do
  flow.task do
    25_000_000.times {}
  end
end

MRI       2.410000   0.000000   2.410000 (  2.413958)
Rubinius  1.441695   0.002414   1.444109 (  0.669596)

10.times do
  flow.task do
    25_000_000.times {}
  end
end

MRI       12.240000   0.030000  12.270000 ( 12.279808)
Rubinius  9.036620   0.019799   9.056419 (  2.389200)

flow.task do
  10.times do
    25_000_000.times {}
  end
end

MRI       11.900000   0.010000  11.910000 ( 11.907605)
Rubinius  6.457743   0.003660   6.461403 (  6.448730)

puts Benchmark.measure {
  25_000_000.times {}
  25_000_000.times {}
}

MRI       2.530000   0.000000   2.530000 (  2.531881)
Rubinius  0.846639   0.000494   0.847133 (  0.840795)

puts Benchmark.measure {
  t = Thread.new do
    25_000_000.times {}
  end
  25_000_000.times {}
  t.join
}

MRI       2.400000   0.010000   2.410000 (  2.397585)
Rubinius  1.527682   0.001035   1.528717 (  0.733810)

puts Benchmark.measure {
  t1 = Thread.new do
    25_000_000.times {}
  end

  t2 = Thread.new do
    25_000_000.times {}
  end

  t1.join
  t2.join
}

MRI       2.410000   0.000000   2.410000 (  2.410826)
Rubinius  1.353337   0.003410   1.356747 (  0.680599)

puts Benchmark.measure {
  t = []

  10.times do |i|
    th = Thread.new do
      25_000_000.times {}
    end
    t[i] = th
  end

  t.each { |th| th.join }
}

MRI       12.450000   0.020000  12.470000 ( 12.482419)
Rubinius  8.700109   0.015655   8.715764 (  2.232997)