Benchmark script via miloops' arel fork via DataMapper's AR compariso…

…n script

activerecord/examples/.gitignore

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+performance.sql

activerecord/examples/performance.rb

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+#!/usr/bin/env ruby -KU
+
+TIMES = (ENV['N'] || 10000).to_i
+
+require 'rubygems'
+gem 'addressable',  '~>2.0'
+gem 'faker',        '~>0.3.1'
+gem 'rbench',       '~>0.2.3'
+require 'addressable/uri'
+require 'faker'
+require 'rbench'
+
+__DIR__ = File.dirname(__FILE__)
+$:.unshift "#{__DIR__}/../lib"
+require 'active_record'
+
+conn = { :adapter => 'mysql',
+  :database => 'activerecord_unittest',
+  :username => 'rails', :password => '',
+  :encoding => 'utf8' }
+
+conn[:socket] = Pathname.glob(%w[
+  /opt/local/var/run/mysql5/mysqld.sock
+  /tmp/mysqld.sock
+  /tmp/mysql.sock
+  /var/mysql/mysql.sock
+  /var/run/mysqld/mysqld.sock
+]).find { |path| path.socket? }
+
+ActiveRecord::Base.establish_connection(conn)
+
+class User < ActiveRecord::Base
+  connection.create_table :users, :force => true do |t|
+    t.string :name, :email
+    t.timestamps
+  end
+
+  has_many :exhibits
+end
+
+class Exhibit < ActiveRecord::Base
+  connection.create_table :exhibits, :force => true do |t|
+    t.belongs_to :user
+    t.string :name
+    t.text :notes
+    t.timestamps
+  end
+
+  belongs_to :user
+
+  def look; attributes end
+  def feel; look; user.name end
+
+  def self.look(exhibits) exhibits.each { |e| e.look } end
+  def self.feel(exhibits) exhibits.each { |e| e.feel } end
+end
+
+sqlfile = "#{__DIR__}/performance.sql"
+
+if File.exists?(sqlfile)
+  mysql_bin = %w[mysql mysql5].select { |bin| `which #{bin}`.length > 0 }
+  `#{mysql_bin} -u #{conn[:username]} #{"-p#{conn[:password]}" unless conn[:password].blank?} #{conn[:database]} < #{sqlfile}`
+else
+  puts 'Generating data...'
+
+  # pre-compute the insert statements and fake data compilation,
+  # so the benchmarks below show the actual runtime for the execute
+  # method, minus the setup steps
+
+  # Using the same paragraph for all exhibits because it is very slow
+  # to generate unique paragraphs for all exhibits.
+  notes = Faker::Lorem.paragraphs.join($/)
+  today = Date.today
+
+  puts 'Inserting 10,000 users and exhibits...'
+  10_000.times do
+    user = User.create(
+      :created_on => today,
+      :name       => Faker::Name.name,
+      :email      => Faker::Internet.email
+    )
+
+    Exhibit.create(
+      :created_on => today,
+      :name       => Faker::Company.name,
+      :user       => user,
+      :notes      => notes
+    )
+  end
+
+  mysqldump_bin = %w[mysqldump mysqldump5].select { |bin| `which #{bin}`.length > 0 }
+  `#{mysqldump_bin} -u #{conn[:username]} #{"-p#{conn[:password]}" unless conn[:password].blank?} #{conn[:database]} exhibits users > #{sqlfile}`
+end
+
+RBench.run(TIMES) do
+  column :times
+  column :ar
+
+  report 'Model#id', (TIMES * 100).ceil do
+    ar_obj = Exhibit.find(1)
+
+    ar { ar_obj.id }
+  end
+
+  report 'Model.new (instantiation)' do
+    ar { Exhibit.new }
+  end
+
+  report 'Model.new (setting attributes)' do
+    attrs = { :name => 'sam' }
+    ar { Exhibit.new(attrs) }
+  end
+
+  report 'Model.first' do
+    ar { Exhibit.first.look }
+  end
+
+  report 'Model.all limit(100)', (TIMES / 10).ceil do
+    ar { Exhibit.look Exhibit.all(:limit => 100) }
+  end
+
+  report 'Model.all limit(100) with relationship', (TIMES / 10).ceil do
+    ar { Exhibit.feel Exhibit.all(:limit => 100, :include => :user) }
+  end
+
+  report 'Model.all limit(10,000)', (TIMES / 1000).ceil do
+    ar { Exhibit.look Exhibit.all(:limit => 10000) }
+  end
+
+  exhibit = {
+    :name       => Faker::Company.name,
+    :notes      => Faker::Lorem.paragraphs.join($/),
+    :created_on => Date.today
+  }
+
+  report 'Model.create' do
+    ar { Exhibit.create(exhibit) }
+  end
+
+  report 'Resource#attributes=' do
+    attrs_first  = { :name => 'sam' }
+    attrs_second = { :name => 'tom' }
+    ar { exhibit = Exhibit.new(attrs_first); exhibit.attributes = attrs_second }
+  end
+
+  report 'Resource#update' do
+    ar { Exhibit.first.update_attributes(:name => 'bob') }
+  end
+
+  report 'Resource#destroy' do
+    ar { Exhibit.first.destroy }
+  end
+
+  report 'Model.transaction' do
+    ar { Exhibit.transaction { Exhibit.new } }
+  end
+
+  summary 'Total'
+end
+
+ActiveRecord::Migration.drop_table "exhibits"
+ActiveRecord::Migration.drop_table "users"