我们在Heroku上部署了一个Rails应用程序(RAM-512mb)。我们有一个返回13k +对象的API(Growing)。 Heroku应用的内存跨越了200%的内存。如果我重新启动我的应用程序,并打这个特定的API 3-4次,内存立即跨越内存大小。它是内存泄漏吗?内存收费太多了吗?内存超过生产中的Rails应用程序(部署在Heroku上)
Controller code:
def respond
@us_anss= UsAns.respond_to_query(params)
end
型号代码
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的代码
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]
我甩生产数据库,并与derailed_benchmarks宝石跑了本地。我使用这个特性来获得运行时的内存大小。
PATH_TO_HIT=/users/new bundle exec derailed exec perf:mem_over_time
这里是上面的命令的日志
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
我用顶部看存储器大小和命中API本地50倍。这里是顶部的日志 Tops stats
我在开发和生产中使用新的遗迹。它表明响应时间的主要部分是由控制器方法消耗的。
为什么你需要返回所有13K +元素一个要求吗?这不会缩放。为什么你需要重新计算'coun','date'和'rel_id'对每个请求的每个元素?难道不能将这些值存储在数据库中,或者至少在数据库中计算它们吗? – spickermann