Question

我的Heroku托管应用程序存在一些内存问题。我正在使用一名工人，只使用1x默认dyno。该应用程序使用Ruby 2.0和Rails 4.1.4与unicorn作为Web服务器。

这是unicorn配置文件。

worker_processes Integer(ENV["WEB_CONCURRENCY"] || 2)
timeout 30
preload_app true

before_fork do |server, worker|

  Signal.trap 'TERM' do
    puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
    Process.kill 'QUIT', Process.pid
  end

  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.connection.disconnect!
end 

after_fork do |server, worker|
  Signal.trap 'TERM' do
    puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
  end

  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.establish_connection
end

我无缘无故地接受了R14内存问题。没有对应用程序的请求，但正如您从屏幕截图中看到的那样，使用的内存会在短时间内翻倍。

Aug 21 00:47:22 ABC heroku/web.1:  source=web.1 dyno=heroku.27639500.25827f7d-f927-465a-898d-dd87d4376efb sample#load_avg_1m=0.35 
Aug 21 00:47:22 ABC heroku/web.1:  source=web.1 dyno=heroku.27639500.25827f7d-f927-465a-898d-dd87d4376efb sample#memory_total=222.71MB sample#memory_rss=222.70MB sample#memory_cache=0.01MB sample#memory_swap=0.00MB sample#memory_pgpgin=62101pages sample#memory_pgpgout=5088pages 
Aug 21 00:47:43 ABC heroku/web.1:  source=web.1 dyno=heroku.27639500.25827f7d-f927-465a-898d-dd87d4376efb sample#load_avg_1m=0.25 
Aug 21 00:47:43 ABC heroku/web.1:  source=web.1 dyno=heroku.27639500.25827f7d-f927-465a-898d-dd87d4376efb sample#memory_total=588.86MB sample#memory_rss=511.95MB sample#memory_cache=0.01MB sample#memory_swap=76.91MB sample#memory_pgpgin=156028pages sample#memory_pgpgout=24968pages 
Aug 21 00:47:43 ABC heroku/web.1:  Process running mem=588M(115.0%) 
Aug 21 00:47:43 ABC heroku/web.1:  Error R14 (Memory quota exceeded) 
Aug 21 00:48:04 ABC heroku/web.1:  source=web.1 dyno=heroku.27639500.25827f7d-f927-465a-898d-dd87d4376efb sample#load_avg_1m=0.17 
Aug 21 00:48:04 ABC heroku/web.1:  source=web.1 dyno=heroku.27639500.25827f7d-f927-465a-898d-dd87d4376efb sample#memory_total=177.77MB sample#memory_rss=83.40MB sample#memory_cache=0.00MB sample#memory_swap=94.36MB sample#memory_pgpgin=181821pages sample#memory_pgpgout=160469pages

谢谢！

Answer 1

优化Ruby垃圾收集可以帮助在heroku实例上保持较低的使用内存。如果Ruby更频繁地触发GC，这会导致一些CPU周期中断，但会降低内存使用率。

Unable to find a suitable version for webcomponentsjs, please choose one: 1) webcomponentsjs#^0.6.0 which resolved to 0.6.3 and is required by polymer#0.5.6 2) webcomponentsjs#^0.7.2 which resolved to 0.7.12 and is required by polymer#1.1.2 3) webcomponentsjs#* which resolved to 0.7.12 and is required by core-component-page#0.5.6的特别高（默认）值可能会导致RUBY_GC_HEAP_GROWTH_FACTOR。

它的默认值是Error R14 (Memory quota exceeded)，这意味着如果需要扩展堆大小，它将增长80％。您可以尝试将此值降低到1.8和1.1之间的任何值。

R14 - 超出内存配额

1 个答案: