local ssd disk.basically everything is local and the one replica set is for supporting transactions
4 cores 3.4 GHz
it is not shared, not a VM, normal Ubuntu desktop IMac computer
create collection is a single line simple function call in Java driver , no strings attatched
also the insertMany is a simple function call
there are no other instructions in between that might cause the delay
cpu is between 50 to 80 percent and Ram is 10GB.
and i dont have any extra index that might effect insertions.
the weird thing is creating collections.it seems it is a very costly task, am i right?
what is a normal expectation for creating a collection in a system described as above?
actually when i run sequentially all create collection and insertions run less the 0.01 sec.
so definitely the concurrency is the problem