Commits on Aug 21, 2026

1. Add autovacuum_warning to report concurrent vacuum collisions

   Introduce a new GUC, autovacuum_warning (off by default), that logs a
   message when an autovacuum worker attempts to process a table that is
   already being vacuumed by another worker.  Such collisions are a sign
   that autovacuum may not be keeping up, so surfacing them helps operators
   diagnose the situation.  This is modeled after checkpoint_warning, which
   similarly logs when checkpoints occur too frequently.
   The message carries a generic hint to tune the autovacuum configuration,
   since a collision has no single root cause and naming one parameter
   could be misleading.
   Author: Shinya Kato <shinya11.kato@gmail.com>
   Reviewed-by:
   Discussion: https://postgr.es/m/

   

   authored and Commitfest Bot committed

   Aug 21, 2026
   Configuration menu

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2. Configuration menu

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