[ruby-on-rails] 느린 뷰 렌더링의 원인 진단

이것이 언제 시작되었는지 확실하지 않지만 내 앱에서 이상한 일이 발생하고 있습니다 (개발 컴퓨터에서 로컬로 실행). 갑자기 다음과 같은 메시지가 표시됩니다.

Started GET "/" for 127.0.0.1 at 2013-03-10 12:10:24 +1300
Processing by PagesController#home as HTML
  Rendered pages/home.html.erb within layouts/application (2.4ms)
Completed 200 OK in 3242ms (Views: 3241.4ms | ActiveRecord: 0.0ms)

보시다시피 홈 페이지 (비교적 간단한 페이지)를로드하는 데 3 초가 걸립니다. … 우리는 하드 페이지 새로 고침을 말하는 것이 아닙니다. 다른 페이지에서 “홈”링크를 다시 클릭하기 만하면됩니다.

여기서 시작해야 할 부분이 확실하지 않지만 이것은 내 application.rb입니다.

#config/boot.rb is loaded
require File.expand_path('../boot', __FILE__)

require 'rails/all'

if defined?(Bundler)
  Bundler.require(*Rails.groups(:assets => %w(development test)))
end

module Goodsounds
  class Application < Rails::Application
    config.encoding = "utf-8"
    config.filter_parameters += [:password]
    config.assets.initialize_on_precompile = false
    config.assets.enabled = true
    config.action_controller.assets_dir = "#{File.dirname(File.dirname(__FILE__))}/public"
    config.assets.version = '1.0'
    config.autoload_paths += Dir["#{Rails.root}/lib/modules"]
    config.assets.paths += Dir["#{Rails.root}/app/assets/fonts/*"]
    config.assets.precompile += %w( .svg .eot .woff .ttf )
  end
end

… 그리고 dev.rb :

Goodsounds::Application.configure do
  # Settings specified here will take precedence over those in config/application.rb
    Paperclip.options[:command_path] = "/usr/bin/"

    config.action_mailer.default_url_options = { :host => 'localhost:3000' }

  config.action_mailer.raise_delivery_errors = true

  # set delivery method to :smtp, :sendmail or :test
  config.action_mailer.delivery_method = :smtp

  # these options are only needed if you choose smtp delivery

  config.action_mailer.smtp_settings = { :address => "localhost", :port => 1025 }

  # In the development environment your application's code is reloaded on
  # every request. This slows down response time but is perfect for development
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = false

  # Log error messages when you accidentally call methods on nil.
  config.whiny_nils = true

  # Show full error reports and disable caching
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false

  # Print deprecation notices to the Rails logger
  config.active_support.deprecation = :log

  # Only use best-standards-support built into browsers
  config.action_dispatch.best_standards_support = :builtin

  # Raise exception on mass assignment protection for Active Record models
  config.active_re
cord.mass_assignment_sanitizer = :strict

  # Log the query plan for queries taking more than this (works
  # with SQLite, MySQL, and PostgreSQL)
  config.active_record.auto_explain_threshold_in_seconds = 0.5

  # Do not compress assets
  config.assets.compress = false

  # Expands the lines which load the assets
  config.assets.debug = true
end

편집하다:

좋아요, 여기에 새로운 유물에 대한 내용이 있습니다. 그래도 정말 도움이되지 않습니다. 이견있는 사람?

여기에 이미지 설명 입력

여기에 이미지 설명 입력

아 그리고 Chrome 타임 라인에서 배운 내용 :

Send Request - Details
Duration    0 (at 655 ms)
Resource    localhost
Request Method  GET

Receive Response - Details
Duration    0.043ms (at 4.17 s)
Resource    localhost
Status Code 200
MIME Type   text/html

Receive Data - Details
Duration    176.329ms (at 4.17 s)
Self Time   7.037ms
CPU Time    176.329ms
Aggregated Time 061.194ms114.664ms0.471ms0
Resource    localhost
Encoded Data Length 303 Bytes
Used Heap Size  29.1MB (+5.7 MB)

Finish Loading - Details
Duration    0 (at 4.35 s)
Resource    localhost

그건 그렇고 나는 터미널에서 무엇을 발견 할 수 있는지보기 위해 quiet_assets gem을 비활성화했습니다. 다시 .. 도움이되지 않습니다.

Started GET "/" for 127.0.0.1 at 2013-03-10 21:46:40 +1300
Processing by PagesController#home as HTML
  Rendered pages/home.html.erb within layouts/application (43.4ms)
Completed 200 OK in 3501ms (Views: 3480.9ms | ActiveRecord: 19.4ms)


Started GET "/assets/dataTables/jquery.dataTables.bootstrap.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /dataTables/jquery.dataTables.bootstrap.css - 304 Not Modified (11ms)


Started GET "/assets/chosen.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /chosen.css - 304 Not Modified (5ms)


Started GET "/assets/select2.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /select2.css - 304 Not Modified (4ms)


Started GET "/assets/autocomplete.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /autocomplete.css - 304 Not Modified (1ms)


Started GET "/assets/branches.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /branches.css - 304 Not Modified (2ms)


Started GET "/assets/bubbles.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bubbles.css - 304 Not Modified (1ms)


Started GET "/assets/business_show.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /business_show.css - 304 Not Modified (1ms)


Started GET "/assets/chunkyfive_font.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /chunkyfive_font.css - 304 Not Modified (1ms)


Started GET "/assets/consumer_show.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /consumer_show.css - 304 Not Modified (2ms)


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Served asset /datatable_styling.css - 304 Not Modified (1ms)


Started GET "/assets/datepicker.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /datepicker.css - 304 Not Modified (2ms)


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Served asset /devise_links.css - 304 Not Modified (1ms)


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Served asset /dispenser_show.css - 304 Not Modified (1ms)


Started GET "/assets/fonts.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /fonts.css - 304 Not Modified (1ms)


Started GET "/assets/forms.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /forms.css - 304 Not Modified (2ms)


Started GET "/assets/gmaps4rails.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /gmaps4rails.css - 304 Not Modified (1ms)


Started GET "/assets/jquery-ui-1.10.0.custom.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /jquery-ui-1.10.0.custom.css - 304 Not Modified (2ms)


Started GET "/assets/jumbotrons.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /jumbotrons.css - 304 Not Modified (1ms)


Started GET "/assets/layout.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /layout.css - 304 Not Modified (1ms)


Started GET "/assets/open_sans.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /open_sans.css - 304 Not Modified (2ms)


Started GET "/assets/popover.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /popover.css - 304 Not Modified (1ms)


Started GET "/assets/reviews.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /reviews.css - 304 Not Modified (1ms)


Started GET "/assets/spinner.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /spinner.css - 304 Not Modified (2ms)


Started GET "/assets/style_show.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /style_show.css - 304 Not Modified (2ms)


Started GET "/assets/style_show_reviews.css?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /style_show_reviews.css - 304 Not Modified (2ms)


Started GET "/assets/jquery.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /jquery.js - 304 Not Modified (3ms)


Started GET "/assets/jquery_ujs.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /jquery_ujs.js - 304 Not Modified (3ms)


Started GET "/assets/ui.custom.min.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /ui.custom.min.js - 304 Not Modified (1ms)


Started GET "/assets/bootstrap-transition.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-transition.js - 304 Not Modified (5ms)


Started GET "/assets/bootstrap-affix.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-affix.js - 304 Not Modified (3ms)


Started GET "/assets/bootstrap-alert.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-alert.js - 304 Not Modified (4ms)


Started GET "/assets/bootstrap-button.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-button.js - 304 Not Modified (5ms)


Started GET "/assets/bootstrap-carousel.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-carousel.js - 304 Not Modified (3ms)


Started GET "/assets/bootstrap-collapse.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-collapse.js - 304 Not Modified (3ms)


Started GET "/assets/bootstrap-dropdown.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-dropdown.js - 304 Not Modified (3ms)


Started GET "/assets/bootstrap-modal.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-modal.js - 304 Not Modified (3ms)


Started GET "/assets/bootstrap-scrollspy.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-scrollspy.js - 304 Not Modified (3ms)


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Served asset /bootstrap-tab.js - 304 Not Modified (3ms)


Started GET "/assets/bootstrap-tooltip.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-tooltip.js - 304 Not Modified (5ms)


Started GET "/assets/bootstrap-popover.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-popover.js - 304 Not Modified (52ms)


Started GET "/assets/bootstrap-typeahead.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap-typeahead.js - 304 Not Modified (3ms)


Started GET "/assets/bootstrap.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /bootstrap.js - 304 Not Modified (13ms)


Started GET "/assets/gmaps4rails/gmaps4rails.base.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /gmaps4rails/gmaps4rails.base.js - 304 Not Modified (1ms)


Started GET "/assets/gmaps4rails/gmaps4rails.bing.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /gmaps4rails/gmaps4rails.bing.js - 304 Not Modified (2ms)


Started GET "/assets/gmaps4rails/gmaps4rails.googlemaps.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /gmaps4rails/gmaps4rails.googlemaps.js - 304 Not Modified (2ms)


Started GET "/assets/gmaps4rails/gmaps4rails.mapquest.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /gmaps4rails/gmaps4rails.mapquest.js - 304 Not Modified (2ms)


Started GET "/assets/gmaps4rails/gmaps4rails.openlayers.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
Served asset /gmaps4rails/gmaps4rails.openlayers.js - 304 Not Modified (2ms)


Started GET "/assets/jqueryplugins/addresspicker.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
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Started GET "/assets/jqueryplugins/browser_detect.js?body=1" for 127.0.0.1 at 2013-03-10 21:46:44 +1300
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그건 그렇고, reddit에 대한 제안에 따라 자산을 미리 컴파일하고 서버를 실행했습니다. 환상적인 속도보기 :

Processing by PagesController#home as HTML
Rendered pages/home.html.erb within layouts/application (1.1ms)
Completed 200 OK in 6ms (Views: 5.4ms | ActiveRecord: 0.0ms)

이것이 도움을 제공하는지 확실하지 않지만 스택의 두 코드 줄 사이에 주요 지연이 발생합니다.

From: /home/funkdified/.rvm/gems/ruby-1.9.3-p392@goodsounds/gems/actionpack-3.2.13.rc1/lib/action_controller/metal/implicit_render.rb @ line 5 ActionController::ImplicitRender#send_action:

    3: def send_action(method, *args)
    4:   ret = super
 => 5:   default_render unless response_body
    6:   ret
    7: end

[2] pry(#<PagesController>)> next

주요 지연

From: /home/funkdified/.rvm/gems/ruby-1.9.3-p392@goodsounds/gems/actionpack-3.2.13.rc1/lib/action_controller/metal/implicit_render.rb @ line 6 ActionController::ImplicitRender#send_action:

    3: def send_action(method, *args)
    4:   ret = super
    5:   default_render unless response_body
 => 6:   ret
    7: end



답변

좋아, 나는 그것을 알아 냈다 (마침내). 내 실제 자산을 변경하지 않고 이제 이것이 개발임을 알 수 있습니다.

Started GET "/" for 127.0.0.1 at 2013-03-11 23:14:33 +1300
Processing by PagesController#home as HTML
Rendered pages/home.html.erb within layouts/application (1.3ms)

지연은 config.assets.debug = truedevelopment.rb 내부 에서 발생한 것으로 밝혀졌습니다 . 이를 설정 false하면 문제가 해결됩니다.

Rails 핵심 팀 이 기본적으로이 기능을 끄는 것에 대해 토론 했지만 아이디어에 반대하는 것 같습니다. 앞으로 나는 그들이 사용자들에게 상당한 지연 가능성을 알려주기 위해 development.rb의 코멘트 섹션에 무언가를 넣는 것을보고 싶습니다.

다음을 제안하겠습니다.

# Expands the lines which load the assets 
# May cause significant delays in view rendering

좋아, 그들은 내가 중얼 거리는 것을 들었고 레일을 업데이트했다 !


답변

Rails 4.1 이상에서도 동일한 문제가 발생했습니다. Abram의 대답은 부분적으로 만 완성되었습니다.

나갈 수 config.assets.debug = true있지만 새로운 자산 확인 기능을 비활성화해야합니다.

# Adds additional error checking when serving assets at runtime.
# Checks for improperly declared sprockets dependencies.
# Raises helpful error messages.
config.assets.raise_runtime_errors = false

config.assets.debug비활성화 된 솔루션은 자산을 한 번 컴파일하고 자산을 한 번 확인하기 때문에 작동합니다. 자산 검증은 대부분의 시간을 소비하는 곳입니다.


답변

Rails 3.2.13에서 오는 경우 많은 사람들이이 문제를 경험했으며 3.2.12로 되 돌리면 해결되는 것 같습니다. github에서 더 많은 정보를 찾을 수 있습니다 .

필자의 경우 비활성화 config.assets.debug하면 약간의 속도가 빨라졌지만 3.2.12로 되 돌리면 요청 시간이 약 4 초에서 약 250ms로 감소했습니다.


답변

NewRelic.com을 살펴 보십시오 -비용이 들지만 무료 평가판을 사용하면 응용 프로그램을 완전히 분석하고 병목 현상이있는 곳을 찾을 수 있습니다.

New Relic을 제외하고는 언제 시작 되었습니까? 최근에 무엇을 바꿨나요? Rails 및 / 또는 보석을 업그레이드 했습니까? 소스 제어에서 몇 가지 이전 버전을 확인하고 실행하고 문제를 일으킨 커밋을 구체적으로 시도하고 해결하십시오.

모든 브라우저에서 문제가 발생합니까? Chrome 타임 라인 뷰어를 실행하면 브라우저가 특정 자바 스크립트 부분에서 멈춰 있는지 확인할 수 있습니다.

또한 로컬 개발 웹 서버를 씬으로 전환 해보십시오. 문제가 지속됩니까?

행운을 빕니다!


답변

OSX를 사용 중이고 .local을 통해 서비스를 제공하고 있습니까?

그렇다면 해결책으로 내 의견에서 찾은 게시물을 던질 것입니다. 하위 도메인 제약 조건 (레일 3)은 로컬 서버 (씬)를 너무
느리게 만듭니다.


답변