Ruby serialization

gistfile1.rb

require 'msgpack'
require 'benchmark'
require 'stringio'
require 'json'

hash = (1..100000).reduce({}) { |hsh, e|
  hsh[e] = ['-' * 50, '-' * 50]
  hsh
}

Benchmark.bm 25 do |x|
  x.report('to_s') do
    hash.to_s
  end

  x.report('Marshal.dump') do
    Marshal.dump(hash)
  end

  x.report('JSON.dump') do
    JSON.dump(hash)
  end

  x.report('MessagePack.pack') do
    MessagePack.pack(hash)
  end

  x.report('manual string composition') do
    hash.map { |kv| kv.join("\t") }.join($/)
  end
end

gistfile2.txt

                                user     system      total        real
to_s                        0.920000   0.060000   0.980000 (  0.987841)
Marshal.dump                0.760000   0.030000   0.790000 (  0.796507)
JSON.dump                   0.500000   0.050000   0.550000 (  0.555070)
MessagePack.pack            0.100000   0.020000   0.120000 (  0.122173)
manual string composition   0.500000   0.040000   0.540000 (  0.546654)