$ bundle exec ruby bench.rb 
Warming up --------------------------------------
                 URI    18.622k i/100ms
         Addressable     6.465k i/100ms
          uri_parser    22.454k i/100ms
    Addressable Intl     5.385k i/100ms
     uri_parser Intl    12.766k i/100ms
Calculating -------------------------------------
                 URI    193.270k (± 8.1%) i/s -    968.344k in   5.054300s
         Addressable     62.432k (± 3.8%) i/s -    316.785k in   5.082109s
          uri_parser    238.980k (± 2.8%) i/s -      1.213M in   5.077765s
    Addressable Intl     55.547k (± 3.7%) i/s -    280.020k in   5.048548s
     uri_parser Intl    135.370k (± 2.9%) i/s -    676.598k in   5.002692s

Comparison:
          uri_parser:   238980.3 i/s
                 URI:   193269.9 i/s - 1.24x  slower
     uri_parser Intl:   135370.3 i/s - 1.77x  slower
         Addressable:    62432.2 i/s - 3.83x  slower
    Addressable Intl:    55546.6 i/s - 4.30x  slower