Ruby on rails Sidekiq失败，mongoid连接超时，可能连接太多

我目前正在运行

sidekiq 4.1.2

。我从来没有能够同时处理超过一把的工作。最近，我似乎遇到了Sidekiq的疑难解答WIKI中描述的一个问题，名为。显然，

mongoid 3

没有正确地断开工人的连接。但是，我使用的是

mongoid 5.1.3

当一个作业在运行其他几个作业时，试图通过查询访问数据库时，我的问题就会出现：

Timeout::Error: Timed out attempting to dequeue connection after 30 sec.
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool/queue.rb:190:in `wait_for_next!'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool/queue.rb:176:in `block in dequeue_connection'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool/queue.rb:190:in `wait_for_next!'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool/queue.rb:176:in `block in dequeue_connection'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool/queue.rb:172:in `loop'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool/queue.rb:172:in `dequeue_connection'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool/queue.rb:62:in `block in dequeue'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool/queue.rb:61:in `synchronize'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool/queue.rb:61:in `dequeue'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool.rb:51:in `checkout'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/connection_pool.rb:107:in `with_connection'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/server/context.rb:63:in `with_connection'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/operation/executable.rb:34:in `execute'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/collection/view/iterable.rb:80:in `send_initial_query'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/collection/view/iterable.rb:41:in `block in each'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/retryable.rb:51:in `call'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/retryable.rb:51:in `read_with_retry'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongo-2.2.5/lib/mongo/collection/view/iterable.rb:39:in `each'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongoid-5.1.3/lib/mongoid/query_cache.rb:207:in `each'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongoid-5.1.3/lib/mongoid/contextual/mongo.rb:121:in `each'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongoid-5.1.3/lib/mongoid/contextual/mongo.rb:295:in `map'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongoid-5.1.3/lib/mongoid/contextual/mongo.rb:295:in `map'
/home/me/applications/myapp/shared/bundle/ruby/2.2.0/gems/mongoid-5.1.3/lib/mongoid/contextual.rb:20:in `map'
/home/me/applications/myapp/releases/20160618143407/app/jobs/myjob.rb:8:in `block in perform'

一个作业失败后，其他作业很快就会失败。这通常发生在几手作业成功完成后，这可能表明这些作业没有与数据库断开连接。查看

top

我看不出mongo的cpu负载太大

与此同时，我注意到我的

sidetiq 0.7.0

启用的定期作业没有正确调度。一个作业已停止排队，其他作业在重新启动后仅排队一次

根据我的Sidekiq web界面，我有一个队列，名为default，有25个线程。最多12-15人同时忙碌

---

知道如何解决此问题吗？

更改mongoid.yml生产配置中添加wait\u queue\u timeout属性：

production:
  clients:
    default:
     uri:  mongodb://aaaaa.com:27017/mongo
     options:
       connect_timeout: 30
       wait_queue_timeout: 30

---

默认的最大池队列大小为5。将

max\u pool\u size

最大值增加到例如25，将启用到数据库的更多连接

production:
  clients:
    default:
      options:
        max_pool_size: 25

---

你试过使用kiqstand吗？没有，但只适合Mongoid 3。根据自述文件，我不需要更新版本。