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erb和slim的速度比较

程序员文章站 2022-07-15 12:52:41
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看了一个家伙写的《Is Rails Slow?》的ppt，起了测试模板速度的念头。ppt里测试的是haml比erb快，那么我就测试一下slim和erb之间的速度把。我用的gem版本如下：

gemfile

source 'https://rubygems.org'
ruby '2.1.1'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.1.1'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.3'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer',  platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0',          group: :doc

# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring',        group: :development

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

# Use debugger
# gem 'debugger', group: [:development, :test]

gem 'slim-rails', '2.1.4'

 

代码如下：

#users_controller.rb

class UsersController < ApplicationController
  layout :false
  def index
    @users = User.all.to_a
  end
  def show
    @user = User.find_by_id(params[:id])
  end
  def index_slim
    @users = User.all.to_a
  end
  def show_slim
    @user = User.find_by_id(params[:id])
  end
end

 routes.rb

  resources :users, only: [:index, :show] do
    member do
      get :show_slim
    end
    collection do
      get :index_slim
    end
  end

 index.html.erb

<!DOCTYPE html>
<html>
<head>
  <title></title>
</head>
<body>
  <table>
    <tr>
      <td>Name</td>
      <td>Phone</td>
      <td>Address</td>
      <td>Function</td>
    </tr>
    <% @users.each do |user| %>
      <tr>
        <td><%= user.name %></td>
        <td><%= user.phone %></td>
        <td><%= user.address %></td>
        <td><%#= link_to "#{user.name}", user_path(user.id) %></td>
      </tr>
    <% end -%>
  </table>
</body>
</html>

 index_slim.html.slim

html
  head
    title
  body
    table
      tr
        td Name
        td Phone
        td Address
        td Function
      - @users.each do |user|
        tr
          td = user.name
          td = user.phone
          td = user.address
          td
            /= link_to "#{user.name}", show_slim_user_path(user.id)

 ================快乐的分割线====================================

 

下面是测试结果：

注释掉了URL helpers的情况下：

slim的速度：

1～3ms之间浮动

 

Rendered users/index_slim.html.slim (3.0ms)
Rendered users/index_slim.html.slim (1.1ms)
Rendered users/index_slim.html.slim (3.0ms)
Rendered users/index_slim.html.slim (2.1ms)
Rendered users/index_slim.html.slim (1.1ms)
 erb的速度：

 

2～6ms之间浮动

 

Rendered users/index.html.erb (2.4ms)
Rendered users/index.html.erb (3.7ms)
Rendered users/index.html.erb (3.2ms)
Rendered users/index.html.erb (5.7ms)
Rendered users/index.html.erb (3.0ms)
 
加上URL helpers的情况下：

 

slim的速度：
Rendered users/index_slim.html.slim (9.1ms)
Rendered users/index_slim.html.slim (11.1ms)
Rendered users/index_slim.html.slim (6.9ms)
Rendered users/index_slim.html.slim (8.9ms)
Rendered users/index_slim.html.slim (6.9ms)
Rendered users/index_slim.html.slim (7.4ms)
 erb的速度：
Rendered users/index.html.erb (14.1ms)
Rendered users/index.html.erb (10.2ms)
Rendered users/index.html.erb (13.2ms)
Rendered users/index.html.erb (11.4ms)
Rendered users/index.html.erb (12.3ms)
Rendered users/index.html.erb (11.0ms)
 ==============================================================
结论：Slim在有没有URL helper的情况下都会比erb模板的生成html速度快

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