so i have a script that bulk upserts batches of 1000's into a sharded
cluster, as well as in a replica set. In the beginning, everything worked
fine but after a while, the script kept pausing for seconds, now minutes
and even hours, before it continues to run.
I have monitored the db servers and the cpu seems to be busy, but theres no
i/o during the pauses. My guess is that its creating indexes so i tried
monitoring the index creation process but with no luck.
So i am kind of stuck and don't know where to look next, any hint is