[SERVER-48213] database creation get slower for each databases created - MongoDB Jira

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Backwards Compatibility:
Fully Compatible
Operating System:
ALL
Steps To Reproduce:

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I ran this script against a mongo 4.2

https://gist.github.com/emilien-puget/6f9d2f840d4dbe0e613da8c634bf2cc2

and got this result

databases creation benchmarks - 4.2 databases creation no load.csv

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I ran this script against a mongo 4.2 https://gist.github.com/emilien-puget/6f9d2f840d4dbe0e613da8c634bf2cc2 and got this result databases creation benchmarks - 4.2 databases creation no load.csv

Creating databases with indexes takes more time the more databases have been created

is duplicated by

SERVER-40703 Resource leakage + slowness after creating and deleting few thousands of DBs

related to

SERVER-40703 Resource leakage + slowness after creating and deleting few thousands of DBs