【发布时间】：2014-02-22 17:14:31
【问题描述】：
当我的网站获得高流量时，我通过 Google Analytics（分析）定期看到流量下降，并且 nginx 错误日志中出现这种错误：
App 17888 stderr: [ 2014-02-22 17:02:23.5307 19258/0x0000000609a820(Worker 1) utils.rb:68 ]: *** Exception Errno::ECONNRESET in Rack body object #each method (Connection reset by peer) (process 19258, thread 0x0000000609a820(Worker 1)):
App 17888 stderr: from /usr/lib/ruby/vendor_ruby/phusion_passenger/utils/unseekable_socket.rb:114:in `write'
App 17888 stderr: from /usr/lib/ruby/vendor_ruby/phusion_passenger/utils/unseekable_socket.rb:114:in `write'
App 17888 stderr: from /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/thread_handler_extension.rb:141:in `block in process_request'
App 17888 stderr: from /home/ubuntu/.rvm/gems/ruby-1.9.3-p484/gems/activerecord-3.2.12/lib/active_record/query_cache.rb:46:in `each'
App 17888 stderr: from /home/ubuntu/.rvm/gems/ruby-1.9.3-p484/gems/activerecord-3.2.12/lib/active_record/query_cache.rb:46:in `each'
App 17888 stderr: from /home/ubuntu/.rvm/gems/ruby-1.9.3-p484/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_pool.rb:460:in `each'
App 17888 stderr: from /home/ubuntu/.rvm/gems/ruby-1.9.3-p484/gems/rack-1.4.5/lib/rack/body_proxy.rb:31:in `each'
App 17888 stderr: from /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/thread_handler_extension.rb:140:in `process_request'
App 17888 stderr: from /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:142:in `accept_and_process_next_request'
App 17888 stderr: from /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:110:in `main_loop'
App 17888 stderr: from /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler.rb:441:in `block (3 levels) in start_threads'
我认为这与打开的套接字数量或其他有关，我不知道。所以问题是这是什么，我该如何解决。
这是关于我的服务器和应用程序的一些信息：
Nginx：
- worker_processes：32
- worker_connections：4096
- passgener_max_queue_size: 0
- passenger_max_pool_size: 75
- passenger_min_instances: 75
导轨：
- 活动记录池大小：16（这太小了吗？）
服务器：
- 32 个 CPU
- 60GB 内存
我还将允许打开的套接字数增加到 500K，允许打开的文件数增加到 300K。
【问题讨论】：
标签： ruby-on-rails performance ubuntu nginx passenger