mongodb: how can I see the execution time for the aggregate command?

Question

I execute the follow mongodb command in mongo shell

db.coll.aggregate(...)

and i see the list of result. but is it possible to see the query execution time? Is there any equivalent function for explain method for aggregation queries.

Answer 1

var before = new Date()
#aggregation query
var after = new Date()
execution_mills = after - before