Currently, PMM requires profiling to be enabled for QAN to work. Profiling can be expensive if there's a lot of queries to be logged. Instead, mongod.log can be used to gather this data and is much less impactful performance-wise.

Enabling profiling on production systems is a concern for many users, especially the ones migrating from OpsManager.

Proposed solution: Read slow queries statistics from mongod.log instead of system.profile

 
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