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我在 Heroku 上运行一个使用 Thin、Ruby 2.0.0 的 Sinatra 应用程序。每隔 16 小时左右，我就会在日志中收到此错误，并且我的 rufus-scheduler 计划块中的所有内容都停止运行。

关于出了什么问题的任何想法？

  70217056739720     Rufus::Scheduler::EveryJob "5m" {}
  70217056739720     70217056739720
  70217056739720     ThreadError
  70217056739720     can't create Thread (11)
{ 70217056739720 rufus-scheduler intercepted an error:
  70217056739720   job:
  70217056739720   error:
  70217056739720       /app/lib/pusher_benchmarker.rb:26:in `initialize'
  70217056739720       /app/lib/services_runner.rb:13:in `new'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/pusher-client-0.4.0/lib/pusher-client/socket.rb:62:in `initialize'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/pusher-client-0.4.0/lib/pusher-client/socket.rb:62:in `connect'
  70217056739720       /app/lib/services_runner.rb:9:in `initialize'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/pusher-client-0.4.0/lib/pusher-client/socket.rb:62:in `new'
  70217056739720       /app/lib/pusher_benchmarker.rb:34:in `connect'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/rufus-scheduler-3.0.6/lib/rufus/scheduler/jobs.rb:288:in `block (2 levels) in start_work_thread'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/rufus-scheduler-3.0.6/lib/rufus/scheduler/jobs.rb:285:in `block (3 levels) in start_work_thread'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/rufus-scheduler-3.0.6/lib/rufus/scheduler/jobs.rb:288:in `call'
  70217056739720       /app/app.rb:46:in `new'
  70217056739720       /app/app.rb:46:in `block (2 levels) in <class:BenchmarkAnalysis>'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/rufus-scheduler-3.0.6/lib/rufus/scheduler/jobs.rb:224:in `call'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/rufus-scheduler-3.0.6/lib/rufus/scheduler/jobs.rb:224:in `do_call'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/rufus-scheduler-3.0.6/lib/rufus/scheduler/jobs.rb:248:in `do_trigger'
  70217056739720       /app/lib/services_runner.rb:13:in `initialize_services'
} 70217056739720 .
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/rufus-scheduler-3.0.6/lib/rufus/scheduler/jobs.rb:274:in `loop'
  70217056739720       /app/vendor/bundle/ruby/2.0.0/gems/rufus-scheduler-3.0.6/lib/rufus/scheduler/jobs.rb:274:in `block in start_work_thread'
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1 回答 1

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因此，如果 Heroku 限制线程数，我会限制 rufus-scheduler 中的工作线程。

https://github.com/jmettraux/rufus-scheduler/#max_work_threads

您可以在实例化调度程序时对其进行调整，例如：

scheduler = Rufus::Scheduler.new(:max_work_threads => 7)

默认情况下 max_work_threads 为 28。

于 2014-03-07T11:35:49.903 回答