Thread: Aggressive vacuum frequency on a table

The maximum time that a table can go unvacuumed is two billion transactions minus the vacuum_freeze_min_age value at the time of the last aggressive vacuum.

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This implies that if a table is not otherwise vacuumed, autovacuum will be invoked on it approximately once every autovacuum_freeze_max_age minus vacuum_freeze_min_age transactions.

From what I have understood, a table is eligible for aggressive vacuum when it reaches vacuum_freeze_table_age.

Then each table row becomes eligible when it reaches vacuum_freeze_min_age.

The autovacuum frequency would be then autovacuum_freeze_max_age minus vacuum_freeze_table_age transactions (and not autovacuum_freeze_max_age minus vacuum_freeze_min_age transactions).

Thanks for any answer
Regards