max_fsm_pages

PG DB: 8.1.3
12 DB in the cluster

When I do a full vacuum of the database cluster, at the end I am getting the message as follows:

psql:dba_task.sql:1: INFO: free space map contains 8033993 pages in 1023 relations
DETAIL: A total of 8000000 page slots are in use (including overhead).
8201952 page slots are required to track all free space.
Current limits are: 8000000 page slots, 32768 relations, using 49054 KB.
psql:dba_task.sql:1: NOTICE: number of page slots needed (8201952) exceeds max_fsm_pages (8000000)
HINT: Consider increasing the configuration parameter "max_fsm_pages" to a value over 8201952.

My questions are:

1. With out increasing the max_fsm_pages, can I bring down the need for fsm_pages by deleting unnecessary tables?
2. As, the database grows the need for max_fsm_pages grows too, what is the best practice?
3. As a new postgres DBA, how should one manage this parameter?

Thanks
Abu Mushayeed

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