Multi-JSON vs JSON vs Messagepack

json-msgpack.rb

require 'benchmark/ips'
require 'multi_json'
require 'json'
require 'msgpack'

hash = {
  "site_config"=>
  {
  "created_at"=>"2014-03-24T19:58:25Z",
  "data"=>"",
  "data_value"=>"1",
  "group_id"=>nil,
  "id"=>143,
  "site_config_type_id"=>40500,
  "site_id"=>1,
  "updated_at"=>"2014-04-24T19:57:27Z",
  "user_id"=>nil
  }
}

   Benchmark.ips do |x|
  x.report('multi-json') { MultiJson.load(hash.to_json) }
  x.report('json') { JSON.parse(hash.to_json) }
  x.report('msgpack') { MessagePack.unpack(hash.to_msgpack) }
  x.compare!
end

Calculating -------------------------------------
          multi-json     4.416k i/100ms
                json     5.037k i/100ms
             msgpack    12.149k i/100ms
-------------------------------------------------
          multi-json     46.020k (± 6.5%) i/s -    229.632k
                json     53.548k (± 6.7%) i/s -    271.998k
             msgpack    135.581k (± 6.6%) i/s -    680.344k

Comparison:
             msgpack:   135580.8 i/s
                json:    53547.6 i/s - 2.53x slower
          multi-json:    46020.2 i/s - 2.95x slower