rescue-bench.rb

require 'benchmark'

def no_rescue
  1 + 1
end

def rescued
  1 + 1
rescue Exception
end

Benchmark.bm do |x|
  x.report do
    100_000_000.times do
      no_rescue
    end
  end
end

Benchmark.bm do |x|
  x.report do
    100_000_000.times do
      rescued
    end
  end
end

__END__

howaboutwe@colvin:~$ ruby rescue_bench.rb
       user     system      total        real
   8.240000   0.010000   8.250000 (  8.300086)
       user     system      total        real
   8.280000   0.010000   8.290000 (  8.327114)