PostgreSQL Documentation: autovacuum_max

Type:	`integer`
Défaut:	`3`
Min:	`1`
Max:	`262143`
Contexte:	`postmaster`
Redémarrer:	`true`

Sets the maximum number of simultaneously running autovacuum worker processes

Indique le nombre maximum de processus autovacuum (autre que le lanceur d'autovacuum) qui peuvent être exécutés simultanément. La valeur par défaut est 3. Ce paramètre ne peut être configuré qu'au lancement du serveur.

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Recommandations [EN]

If you have an installation with many tables (100's to 1000's) or with some tables which autovacuum takes hours to process, you may want to add additional autovacuum workers so that multiple tables can be vacuumed at once. Be conservative, though, as each autovacuum worker will utilize a separate CPU core, memory and I/O.

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autovacuum_max_workers

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