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TIMES = (ENV['N'] || 10000).to_i
require 'rubygems'
require "active_record"
conn = { :adapter => 'sqlite3', :database => ':memory:' }
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
puts 'Generating data...'
module ActiveRecord
class Faker
LOREM = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse non aliquet diam. Curabitur vel urna metus, quis malesuada elit. Integer consequat tincidunt felis. Etiam non erat dolor. Vivamus imperdiet nibh sit amet diam eleifend id posuere diam malesuada. Mauris at accumsan sem. Donec id lorem neque. Fusce erat lorem, ornare eu congue vitae, malesuada quis neque. Maecenas vel urna a velit pretium fermentum. Donec tortor enim, tempor venenatis egestas a, tempor sed ipsum. Ut arcu justo, faucibus non imperdiet ac, interdum at diam. Pellentesque ipsum enim, venenatis ut iaculis vitae, varius vitae sem. Sed rutrum quam ac elit euismod bibendum. Donec ultricies ultricies magna, at lacinia libero mollis aliquam. Sed ac arcu in tortor elementum tincidunt vel interdum sem. Curabitur eget erat arcu. Praesent eget eros leo. Nam magna enim, sollicitudin vehicula scelerisque in, vulputate ut libero. Praesent varius tincidunt commodo".split
def self.name
LOREM.grep(/^\w*$/).sort_by { rand }.first(2).join ' '
end
def self.email
LOREM.grep(/^\w*$/).sort_by { rand }.first(2).join('@') + ".com"
end
end
end
# 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 = ActiveRecord::Faker::LOREM.join ' '
today = Date.today
puts 'Inserting 10,000 users and exhibits...'
10_000.times do
user = User.create(
:created_at => today,
:name => ActiveRecord::Faker.name,
:email => ActiveRecord::Faker.email
)
Exhibit.create(
:created_at => today,
:name => ActiveRecord::Faker.name,
:user => user,
:notes => notes
)
end
require 'benchmark'
Benchmark.bm(46) do |x|
ar_obj = Exhibit.find(1)
attrs = { :name => 'sam' }
attrs_first = { :name => 'sam' }
attrs_second = { :name => 'tom' }
exhibit = {
:name => ActiveRecord::Faker.name,
:notes => notes,
:created_at => Date.today
}
x.report("Model#id (x#{(TIMES * 100).ceil})") do
(TIMES * 100).ceil.times { ar_obj.id }
end
x.report 'Model.new (instantiation)' do
TIMES.times { Exhibit.new }
end
x.report 'Model.new (setting attributes)' do
TIMES.times { Exhibit.new(attrs) }
end
x.report 'Model.first' do
TIMES.times { Exhibit.first.look }
end
x.report("Model.all limit(100) (x#{(TIMES / 10).ceil})") do
(TIMES / 10).ceil.times { Exhibit.look Exhibit.limit(100) }
end
x.report "Model.all limit(100) with relationship (x#{(TIMES / 10).ceil})" do
(TIMES / 10).ceil.times { Exhibit.feel Exhibit.limit(100).includes(:user) }
end
x.report "Model.all limit(10,000) x(#{(TIMES / 1000).ceil})" do
(TIMES / 1000).ceil.times { Exhibit.look Exhibit.limit(10000) }
end
x.report 'Model.create' do
TIMES.times { Exhibit.create(exhibit) }
end
x.report 'Resource#attributes=' do
TIMES.times {
exhibit = Exhibit.new(attrs_first)
exhibit.attributes = attrs_second
}
end
x.report 'Resource#update' do
TIMES.times { Exhibit.first.update_attributes(:name => 'bob') }
end
x.report 'Resource#destroy' do
TIMES.times { Exhibit.first.destroy }
end
x.report 'Model.transaction' do
TIMES.times { Exhibit.transaction { Exhibit.new } }
end
x.report 'Model.find(id)' do
id = Exhibit.first.id
TIMES.times { Exhibit.find(id) }
end
x.report 'Model.find_by_sql' do
TIMES.times {
Exhibit.find_by_sql("SELECT * FROM exhibits WHERE id = #{(rand * 1000 + 1).to_i}").first
}
end
x.report "Model.log x(#{TIMES * 10})" do
(TIMES * 10).times { Exhibit.connection.send(:log, "hello", "world") {} }
end
x.report "AR.execute(query) (#{TIMES / 2})" do
(TIMES / 2).times { ActiveRecord::Base.connection.execute("Select * from exhibits where id = #{(rand * 1000 + 1).to_i}") }
end
end
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