私はRails 3.2プロジェクトに取り組んでおり、プロジェクトが大規模であるとは考えていませんが、アセットはここ数か月でかなり増加しました。アセットは JS (コーヒー スクリプトなし) と SASS ファイルで構成されます。かなりの数の画像がありますが、初期の頃から数が減っているため、重要な要素ではないと思います. 約 12 個のライブラリがあり、ほとんどが小規模で、最大のものは Jquery UI JS です。デプロイは Capistrano を介して行われ、ステージングへのデプロイは本番環境へのデプロイよりも大幅に高速であることが明らかになり始めました。さまざまなサーバーとネットワークの影響に関する要因を回避しながら説明するために、ラップトップで次の 3 つのコマンドを次のように順番に実行しました。
$ time RAILS_ENV=production bundle exec rake assets:precompile
^Crake aborted!
[Note I aborted this run as I felt it was getting stupidly long...]
real 52m33.656s
user 50m48.993s
sys 1m42.165s
$ time RAILS_ENV=staging bundle exec rake assets:precompile
real 0m41.685s
user 0m38.808s
sys 0m2.803s
$ time RAILS_ENV=development bundle exec rake assets:precompile
real 0m12.157s
user 0m10.567s
sys 0m1.531s
だから私は頭を悩ませています。さまざまな環境の間になぜこれほど大きな違いがあるのでしょうか? 開発とステージングのギャップは理解できますが、ステージングと本番の構成は同じです。(実動コンパイルは約 2 時間後に完了します!)
最終的にはプリコンパイルが高速化されますが、これを達成するには、常にどこに行くのか、Rails 環境間に大きな違いがある理由を理解する必要があります。さまざまなコンプレッサーなどの使用に関する他の投稿を見たことがありますが、これらの rake タスクをデバッグして時間が費やされている場所を特定し、どの設定がそのような劇的な違いを引き起こしている可能性があるかを特定する方法に関する情報を見つけることができません。
I don't know what additional information people may need so will update if and when comments ask. TIA
Update: additional information supplied below
config/environments/production.rb and config/environments/staging.rb (they're exactly the same):
MyRailsApp::Application.configure do
# Code is not reloaded between requests
config.cache_classes = true
# Full error reports are disabled and caching is turned on
config.consider_all_requests_local = false
config.action_controller.perform_caching = true
# Disable Rails's static asset server (Apache or nginx will already do this)
config.serve_static_assets = true
config.static_cache_control = "public, max-age=31536000"
config.action_controller.asset_host = "//#{MyRailsApp::CONFIG[:cdn]}"
# Compress JavaScripts and CSS
config.assets.compress = true
# Don't fallback to assets pipeline if a precompiled asset is missed
config.assets.compile = false
# Generate digests for assets URLs
config.assets.digest = true
# Enable locale fallbacks for I18n (makes lookups for any locale fall back to
# the I18n.default_locale when a translation can not be found)
config.i18n.fallbacks = true
# Send deprecation notices to registered listeners
config.active_support.deprecation = :notify
end
The base config/application.rb is:
require File.expand_path('../boot', __FILE__)
require 'rails/all'
if defined?(Bundler)
# If you precompile assets before deploying to production, use this line
Bundler.require(*Rails.groups(:assets => %w(development test)))
# If you want your assets lazily compiled in production, use this line
# Bundler.require(:default, :assets, Rails.env)
end
module MyRailsApp
CONFIG = YAML.load_file(File.join(File.dirname(__FILE__), 'config.yml'))[Rails.env]
class Application < Rails::Application
# Custom directories with classes and modules you want to be autoloadable.
config.autoload_paths += %W(#{config.root}/lib)
config.autoload_paths += %W(#{config.root}/app/workers)
# Configure the default encoding used in templates for Ruby 1.9.
config.encoding = "utf-8"
# Configure sensitive parameters which will be filtered from the log file.
config.filter_parameters += [:password]
# Enable the asset pipeline
config.assets.enabled = true
# Stop precompile from looking for the database
config.assets.initialize_on_precompile = false
# Version of your assets, change this if you want to expire all your assets
config.assets.version = '1.0'
# Fix fonts in assets pipeline
# http://stackoverflow.com/questions/6510006/add-a-new-asset-path-in-rails-3-1
config.assets.paths << Rails.root.join('app','assets','fonts')
config.middleware.insert 0, 'Rack::Cache', {
:verbose => true,
:metastore => URI.encode("file:#{Rails.root}/tmp/dragonfly/cache/meta"),
:entitystore => URI.encode("file:#{Rails.root}/tmp/dragonfly/cache/body")
} # unless Rails.env.production? ## uncomment this 'unless' in Rails 3.1,
## because it already inserts Rack::Cache in production
config.middleware.insert_after 'Rack::Cache', 'Dragonfly::Middleware', :images
config.action_mailer.default_url_options = { :host => CONFIG[:email][:host] }
config.action_mailer.asset_host = 'http://' + CONFIG[:email][:host]
end
end
Gem file:
source 'http://rubygems.org'
gem 'rails', '3.2.13'
gem 'mysql2'
gem 'dragonfly', '>= 0.9.14'
gem 'rack-cache', :require => 'rack/cache'
gem 'will_paginate'
gem 'dynamic_form'
gem 'amazon_product' # for looking up Amazon ASIN codes of books
gem 'geoip'
gem 'mobile-fu'
gem 'airbrake'
gem 'newrelic_rpm'
gem 'bartt-ssl_requirement', '~>1.4.0', :require => 'ssl_requirement'
gem 'dalli' # memcache for api_cache
gem 'api_cache'
gem 'daemons'
gem 'delayed_job_active_record'
gem 'attr_encrypted'
gem 'rest-client'
gem 'json', '>= 1.7.7'
gem 'carrierwave' # simplify file uploads
gem 'net-scp'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'therubyracer'
gem 'sass-rails', '~> 3.2.3'
gem 'compass', '~> 0.12.alpha'
gem 'uglifier', '>= 1.0.3'
gem 'jquery-fileupload-rails'
end
gem 'jquery-rails'
gem 'api_bee', :git => 'git://github.com/ismasan/ApiBee.git', :ref => '3cff959fea5963cf46b3d5730d68927cebcc59a8'
gem 'httparty', '>= 0.10.2'
gem 'twitter'
# Auth providers
gem 'omniauth-facebook'
gem 'omniauth-twitter'
gem 'omniauth-google-oauth2'
gem 'omniauth-identity'
gem 'omniauth-readmill'
gem 'bcrypt-ruby', "~> 3.0.0" # required for omniauth-identity
gem 'mail_view'
# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'
# Deploy with Capistrano
group :development do
gem 'capistrano'
gem 'capistrano-ext'
gem 'capistrano_colors'
gem 'rvm-capistrano'
# requirement for Hoof, Linux equivalent of Pow
gem 'unicorn'
end
group :test, :development do
gem 'rspec-rails'
gem 'pry'
gem 'pry-rails'
end
group :test do
gem 'factory_girl_rails'
gem 'capybara'
gem 'cucumber-rails'
gem 'database_cleaner'
gem 'launchy'
gem 'ruby-debug19'
# Pretty printed test output
gem 'shoulda-matchers'
gem 'simplecov', :require => false
gem 'email_spec'
gem 'show_me_the_cookies'
gem 'vcr'
gem 'webmock', '1.6'
end