simple_rdl_benchmark.rb

require "benchmark/ips"
require "rdl"

def sum(a, b)
  a + b
end

type '(Fixnum, Fixnum) -> Fixnum'
def sum_rdl(a, b)
  a + b
end

Benchmark.ips do |results|
  results.report("sum ok") { sum(1, 5) }
  results.report("sum fail") { sum(true, false) rescue nil }

  results.report("sum_rdl ok") { sum_rdl(1, 5) }
  results.report("sum_rdl fail") { sum_rdl(true, false) rescue nil }
end

__END__
Warming up --------------------------------------
              sum ok   246.345k i/100ms
            sum fail    38.719k i/100ms
          sum_rdl ok     7.752k i/100ms
        sum_rdl fail     5.792k i/100ms
Calculating -------------------------------------
              sum ok      9.040M (± 7.9%) i/s -     44.835M in   5.002876s
            sum fail    444.530k (± 7.4%) i/s -      2.246M in   5.084312s
          sum_rdl ok     79.555k (±10.3%) i/s -    395.352k in   5.046667s
        sum_rdl fail     59.882k (± 4.4%) i/s -    301.184k in   5.039990s