My application use motor 2.0.0 and pymongo 3.11.0 to connect Mongodb cluster , but  when I mistakenly filled in IP as follows，

connector = motor.motor_tornado.MotorClient(‘192.168.0.10， 192.168.0.11’, 27017)

   There is a space character bewteen ',' and '192.168.0.11', so the application cann't connect to 192.168.0.11:27017 mongos process.  But that doesn't affect the app because the first IP is available，and I find that the memory used by the application grows slowly.

  Then I use memory_analyzer tool to profile memory useage. There were 309 ServerDescription objects and 307 AutoReconnect objects at 2020-11-16 16:55:14, 

6610 ServerDescription objects and 6607 AutoReconnect objects at 2020-11-17 10:26:43, the result shows both of the ServerDescription and AutoReconnect objects grows by 6301 in 63089 seconds , the frequency is consistent with the frequency of monitoring.