pg array parser 性能測定

gistfile1.rb

require 'benchmark'
require 'benchmark/ips'
require 'ruby-prof'
require 'pg_array_parser'
require 'active_record/connection_adapters/postgresql/array_parser'

class MyPgArrayParser
  include PgArrayParser
end

class RailsPgArrayParser
  include ActiveRecord::ConnectionAdapters::PostgreSQL::ArrayParser
end

test_string = '{some,strings that,"May have some ,\'s"}'

Benchmark.ips do |x|
  x.report('pg_array_parser') do
    parser = MyPgArrayParser.new
    parser.parse_pg_array test_string
  end
  x.report('rails_pg_array_parser') do
    parser = RailsPgArrayParser.new
    parser.parse_pg_array test_string
  end
  x.compare!
end

##########################
Calculating -------------------------------------
     pg_array_parser    66.151k i/100ms
rails_pg_array_parser
                         5.554k i/100ms
-------------------------------------------------
     pg_array_parser      1.308M (± 5.7%) i/s -      6.549M
rails_pg_array_parser
                         56.155k (± 7.2%) i/s -    283.254k

Comparison:
     pg_array_parser:  1308030.9 i/s
rails_pg_array_parser:    56154.7 i/s - 23.29x slower