json_benchmark.rb

require 'oj'
require 'active_support/all'
require 'benchmark'


null = nil
hash = {
  "photo"=> {
    "id"=> 4928401,
    "user_id"=> 164677,
    "name"=> "Northern Fulmar",
    "description"=> "Photographed during a pelagic trip east of Cape Cod. This seabird species only comes to land to nest and stays on the open sea the rest of the year. They can drink saltwater and excrete the excess salt through a gland on top of the bill.",
    "camera"=> "Canon EOS-1D Mark IV",
    "lens"=> "",
    "focal_length"=> "700",
    "iso"=> "400",
    "shutter_speed"=> "1/2000",
    "aperture"=> "6.3",
    "times_viewed"=> 167,
    "rating"=> 97.1,
    "status"=> 1,
    "created_at"=> "2012-02-09T21=>11=>53-05=>00",
    "category"=> 11,
    "privacy"=> false,
    "latitude"=> null,
    "longitude"=> null,
    "taken_at"=> "2010-11-13T08=>37=>37-05=>00",
    "hi_res_uploaded"=> 0,
    "for_sale"=> false,
    "width"=> 588,
    "height"=> 750,
    "votes_count"=> 36,
    "favorites_count"=> 18,
    "comments_count"=> 36,
    "nsfw"=> false,
    "sales_count"=> 0,
    "for_sale_date"=> null,
    "highest_rating"=> 97.1,
    "highest_rating_date"=> "2012-04-16T15=>05=>56-04=>00",
    "image_url"=> "http=>//pcdn.500px.net/4928401/16666558d7ba410f50922f86f736888d8cfaf9bb/4.jpg",
    "images"=> {"size"=> 4, "url"=> "http=>//pcdn.500px.net/4928401/16666558d7ba410f50922f86f736888d8cfaf9bb/4.jpg"},
    "store_download"=> false,
    "store_print"=> false,
    "voted"=> false,
    "favorited"=> false,
    "purchased"=> false,
    "user"=> {
      "id"=> 164677,
      "username"=> "axelhildebrandt",
      "firstname"=> "Axel",
      "lastname"=> "Hildebrandt",
      "city"=> "Bethlehem",
      "country"=> "U.S.",
      "fullname"=> "Axel Hildebrandt",
      "userpic_url"=> "http=>//acdn.500px.net/164677.jpg",
      "upgrade_status"=> 0
    }
  },
  "comments"=> [
    {
      "id"=> 8482806,
      "user_id"=> 584607,
      "to_whom_user_id"=> 164677,
      "body"=> "Test",
      "created_at"=> "2012-04-16T15=>07=>54-04=>00",
      "parent_id"=> null,
      "user"=> {
        "id"=> 584607,
        "username"=> "ArseniyIvanov",
        "firstname"=> "Arseniy",
        "lastname"=> "Ivanov",
        "fullname"=> "Arseniy Ivanov",
        "userpic_url"=> "http=>//acdn.500px.net/584607/36708ac62be191405639ad071f6bb772186c8679/1.jpg?103",
        "upgrade_status"=> 2
      }
    },
    {
      "id"=> 8477321,
      "user_id"=> 413718,
      "to_whom_user_id"=> 164677,
      "body"=> "Like!",
      "created_at"=> "2012-02-10T00=>59=>44-05=>00",
      "parent_id"=> null,
      "user"=> {
        "id"=> 413718,
        "username"=> "SilviaSil",
        "firstname"=> "Silvia",
        "lastname"=> "S.",
        "fullname"=> "Silvia S.",
        "userpic_url"=> "/graphics/userpic.png",
        "upgrade_status"=> 0
      }
    }
  ]
}

Benchmark.bmbm do |x|

  x.report("ActiveSupport") do
    1_000.times { ActiveSupport::JSON.encode(hash) }
  end

  x.report("OJ") do
    1_000.times { Oj.dump(hash) }
  end
end

Rehearsal -------------------------------------------------
ActiveSupport   1.150000   0.020000   1.170000 (  1.183642)
OJ              0.020000   0.000000   0.020000 (  0.012479)
---------------------------------------- total: 1.190000sec

                    user     system      total        real
ActiveSupport   1.150000   0.000000   1.150000 (  1.160273)
OJ              0.010000   0.000000   0.010000 (  0.011651)