We're running a MongoDB 3.0 server with multiple users accessing it and we're experiencing very frequent disk reads by mongod
process utilizing our SSD drives to 100%
During these peaks the page faults increase by 30x - it seems like a query is accessing data not in memory which in turn needs to be loaded.
I couldn't find a way how to monitor which query/collection/db triggers these reads. Any ideas if it's even possible with MongoDB?
All we can see is that iotop
reports 10-15s disk read at full speed from mongod process.