FSM - per database or per installation?

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Are the FSM parameters for each database, or the entire Postgres system?  In other words, if I have 100 databases, do I need to increase max_fsm_pages and max_fsm_relations by a factor of 100, or keep them the same as if I just have one database?

I suspect they're per-database, i.e. as I add databases, I don't have to increase the FSM parameters, but the documentation isn't 100% clear on this point.

Thanks,
Craig

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