Ruby例外処理の計測

benchmark_exception.rb

# Ruby 2.5.1
# ----- Result ------
# Normal: 0.0035529999986465555s
# Exception: 0.08799100000032922s
# Exception/Normal: 24.765268796467108
# Catch&Throw: 0.027447000000393018s
# Catch&Throw/Normal: 7.725021111975346

require 'benchmark'

exception_result = Benchmark.realtime do |b|
  100000.times do
    begin
      raise
    rescue
    end
  end
end

normal_result = Benchmark.realtime do |b|
  100000.times do
  end
end

throw_result = Benchmark.realtime do |b|
  100000.times do
    catch :test do
      throw :test
    end
  end
end

p "Normal: #{normal_result}s"
p "Exception: #{exception_result}s"
p "Exception/Normal: #{exception_result/normal_result}"
p "Catch&Throw: #{throw_result}s"
p "Catch&Throw/Normal: #{throw_result/normal_result}"