multiple get more call in MongoDB Log

[Anil Yadav]

Hi All,

I am not sure weather it's a duplicate question or Not. Below is my question.

Sometimes application shows  latencies at mongo Side. Whenever we are troubleshooting we only found get_more calles in mongodb. Application team is unable to find anything at their end. I want to know when get_more is Being executed.  In what all scnerios mongoldb calling get_more .

Please help 

[Kevin Adistambha]

Hi

getMore is typically called when going through a query result that is larger than a single batch (see Cursor Batches), and is also used by replication.

High query latency could be caused by many things, but the most common cause are:

• Inefficient queries (e.g. number of returned documents is small compared to number of documents examined by MongoDB)
• Unindexed queries (i.e. many queries having collection scan step, forcing MongoDB to examine every document in the collection)
• Underprovisioned hardware (e.g. not enough RAM to service the workload efficiently)

Please see Query Optimization for more information regarding this subject.

Best regards
Kevin

​