Benchmark: shallow_attributes vs virtus

shallow_attributes_vs_virtus.rb

require 'benchmark/ips'
require 'shallow_attributes'
require 'virtus'

hash = {
  addresses: [
    {
      street: 'Street 1/2',
      city: {
        name: 'NYC'
      }
    },
    {
      street: 'Street 3/2',
      city: {
        name: 'Moscow'
      }
    }
  ]
}


class City
  include ShallowAttributes

  attribute :name, String
  attribute :size, Integer, default: 9000
end

class Address
  include ShallowAttributes

  attribute :street,  String
  attribute :zipcode, String, default: '111111'
  attribute :city,    City
end

class Person
  include ShallowAttributes

  attribute :name,      String
  attribute :address,   Address
  attribute :addresses, Array, of: Address
end

class VirtusCity
  include Virtus.model

  attribute :name, String
  attribute :size, Integer, default: 9000
end

class VirtusAddress
  include Virtus.model

  attribute :street,  String
  attribute :zipcode, String, default: '111111'
  attribute :city,    VirtusCity
end

class VirtusUser
  include Virtus.model

  attribute :name,      String
  attribute :address,   VirtusAddress
  attribute :addresses, Array[VirtusAddress]
end

shallow_attributes = Person.new(hash)
virtus = VirtusUser.new(hash)

Benchmark.ips do |x|
  x.report('Initialize: SA') { Person.new(hash) }
  x.report('Initialize: virtus') { VirtusUser.new(hash) }

  x.report('Getter: SA') { shallow_attributes.addresses.first.city.size }
  x.report('Getter: virtus') { virtus.addresses.first.city.size }

  x.report('Setter: SA') { shallow_attributes.addresses.first.city.size = '12' }
  x.report('Setter: virtus') { virtus.addresses.first.city.size = '12' }

  x.report('Attributes: SA') { shallow_attributes.attributes }
  x.report('Attributes: virtus') { virtus.attributes }

  x.report('Equals: SA') { shallow_attributes == virtus }
  x.report('Equals: virtus') { virtus == shallow_attributes }
  x.compare!
end

# Warming up --------------------------------------
#       Initialize: SA     2.053k i/100ms
#   Initialize: virtus   934.000  i/100ms
#           Getter: SA   118.291k i/100ms
#       Getter: virtus    34.085k i/100ms
#           Setter: SA    42.493k i/100ms
#       Setter: virtus     4.589k i/100ms
#       Attributes: SA    44.074k i/100ms
#   Attributes: virtus    18.233k i/100ms
#           Equals: SA    13.352k i/100ms
#       Equals: virtus   133.364k i/100ms
# 
# Calculating -------------------------------------
#       Initialize: SA     22.119k (± 8.2%) i/s -    110.862k
#   Initialize: virtus     11.572k (±19.3%) i/s -     55.106k
# 
#           Getter: SA      6.470M (±14.5%) i/s -     31.347M
#       Getter: virtus    755.849k (± 9.7%) i/s -      3.749M
# 
#           Setter: SA    635.142k (± 9.7%) i/s -      3.144M
#       Setter: virtus     46.577k (± 6.5%) i/s -    234.039k
# 
#       Attributes: SA    534.020k (±23.0%) i/s -      2.556M
#   Attributes: virtus    182.737k (±22.0%) i/s -    856.951k
# 
#           Equals: SA    150.006k (± 8.2%) i/s -    747.712k
#       Equals: virtus      9.704M (± 5.2%) i/s -     48.411M