Benchmark of serialization with msgpack (https://github.com/msgpack/msgpack-ruby) vesus Oj (the fatest JSON library https://github.com/ohler55/oj)

msgpack_perf.rb

require 'benchmark'

h = { 'one' => 1, 'array' => [ true, false ] }
n = 50000

require 'oj'
Benchmark.bmbm do |x|
  x.report('Oj.dump') { n.times { Oj.dump(h) } }
end

h_dump = Oj.dump(h)
Benchmark.bmbm do |x|
  x.report('Oj.load') { n.times { Oj.load(h_dump) } }
end

require 'msgpack'
Benchmark.bmbm do |x|
  x.report('to_msgpack') { n.times { h.to_msgpack } }
end

h_dump = h.to_msgpack
Benchmark.bmbm do |x|
  x.report('MessagePack.unpack') { n.times { MessagePack.unpack(h_dump) } }
end

# Rehearsal -------------------------------------------
# Oj.dump   0.790000   0.000000   0.790000 (  0.790353)
# ---------------------------------- total: 0.790000sec

#              user     system      total        real
# Oj.dump   0.760000   0.000000   0.760000 (  0.767639)
#
# Rehearsal -------------------------------------------
# Oj.load   0.090000   0.000000   0.090000 (  0.094122)
# ---------------------------------- total: 0.090000sec
#
#              user     system      total        real
# Oj.load   0.080000   0.010000   0.090000 (  0.091066)
#
# Rehearsal ----------------------------------------------
# to_msgpack   0.040000   0.010000   0.050000 (  0.040576)
# ------------------------------------- total: 0.050000sec
#
#                 user     system      total        real
# to_msgpack   0.030000   0.000000   0.030000 (  0.036711)
#
# Rehearsal ------------------------------------------------------
# MessagePack.unpack   0.080000   0.000000   0.080000 (  0.075730)
# ---------------------------------------------- total: 0.080000sec
#
#                          user     system      total        real
# MessagePack.unpack   0.070000   0.000000   0.070000 (  0.063036)