我們在Heroku上部署了一個Rails應用程序(RAM-512mb)。我們有一個返回13k +對象的API(Growing)。 Heroku應用的內存跨越了200%的內存。如果我重新啓動我的應用程序,並打這個特定的API 3-4次,內存立即跨越內存大小。它是內存泄漏嗎?內存收費太多了嗎?內存超過生產中的Rails應用程序(部署在Heroku上)
Controller code:
def respond
@us_anss= UsAns.respond_to_query(params)
end
型號代碼
def respond_to_query
anss = self.all.includes(:a, :b, :c)
anss.each do |ans|
ans.class.class_eval {attr_accessor :coun, :date, :rec_id}
ans.coun = ans.user.coun
ans.date = ans.created_at.to_date
if ans.rel_id.nil?
ans.rec_id = nil
else
ans.rec_id = ans.user.opponent(ans.rel).id
end
end
return anss
end
Rabl的代碼
Rail code
attributes :ans => :message_content, :user_id => :sen_id
attributes :rec_id, :coun, :date, :latitude, :longitude
collection @us_anss, :object_root => false
child :que do |us_wer|
attributes :que => :text
attributes :id, :tri_date
end
的Gemfile
source 'https://rubygems.org'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.0.0', '>= 5.0.0.1'
gem 'puma', '~> 3.0'
gem 'rabl'
# Also add either `oj` or `yajl-ruby` as the JSON parser
gem 'oj'
# gem for dashboard
gem 'rails_admin', '~> 1.0'
# Gem for push notifications
gem 'rpush', :git => "git://github.com/moldedbits/rpush.git", :branch => 'master'
# Rack::Cors provides support for Cross-Origin Resource Sharing (CORS)
for Rack compatible web applications.
gem 'rack-cors', :require => 'rack/cors'
# Gem for scheduling tasks
gem 'rufus-scheduler'
gem 'jquery-rails', '~> 4.2', '>= 4.2.1'
gem 'bootstrap-sass', '~> 3.3', '>= 3.3.7'
gem 'sass-rails', '~> 5.0', '>= 5.0.6'
gem 'haml', '~> 4.0', '>= 4.0.7'
gem 'newrelic_rpm'
# Use ActiveModel has_secure_password
gem 'bcrypt', '~> 3.1.7'
gem 'geocoder'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
# Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin AJAX possible
# gem 'rack-cors'
gem 'obscenity', '~> 1.0', '>= 1.0.2'
group :development, :test do
gem 'dotenv-rails'
gem 'factory_girl_rails'
gem 'shoulda-matchers', '~> 3.1', '>= 3.1.1'
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platform: :mri
gem 'rspec-rails', '~> 3.5'
gem 'airborne'
gem 'faker', '~> 1.6', '>= 1.6.6'
# Use sqlite3 as the database for Active Record
end
gem 'rake', '>=11.3.0'
gem 'scout_apm'
group :development do
gem 'sqlite3'
gem 'listen', '~> 3.0.5'
gem 'letter_opener'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
end
gem 'exception_notification'
group :production do
gem 'pg'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
我甩生產數據庫,並與derailed_benchmarks寶石跑了本地。我使用這個特性來獲得運行時的內存大小。
PATH_TO_HIT=/users/new bundle exec derailed exec perf:mem_over_time
這裏是上面的命令的日誌
86.640625
41.62109375
36.15625
86.3671875
73.2265625
72.78515625
93.78515625
163.53515625
192.04296875
168.1953125
221.4609375
281.02734375
92.8046875
315.203125
150.9609375
209.9453125
324.18359375
327.5390625
346.625
346.76953125
353.06640625
355.0
360.96484375
369.99609375
385.41015625
388.75
391.203125
378.58203125
375.23046875
387.6640625
389.33984375
390.8828125
399.21484375
415.59375
415.8359375
419.88671875
435.46484375
437.91796875
430.77734375
417.00390625
425.43359375
425.58984375
430.51171875
425.8671875
430.2578125
431.16796875
390.44140625
358.81640625
393.890625
399.44140625
403.44921875
412.859375
363.3515625
359.390625
379.11328125
398.55859375
400.31640625
406.91015625
423.31640625
420.875
425.875
426.91796875
426.5859375
430.390625
386.78515625
377.77734375
374.86328125
252.625
我用頂部看存儲器大小和命中API本地50倍。這裏是頂部的日誌 Tops stats
我在開發和生產中使用新的遺蹟。它表明響應時間的主要部分是由控制器方法消耗的。
爲什麼你需要返回所有13K +元素一個要求嗎?這不會縮放。爲什麼你需要重新計算'coun','date'和'rel_id'對每個請求的每個元素?難道不能將這些值存儲在數據庫中,或者至少在數據庫中計算它們嗎? – spickermann