autovacuum is ON in the system but commented out in postgresql.conf

Subramanian,Ramachandran <ramachandran.subramanian@alte-leipziger.de>

From: "Subramanian,Ramachandran" <ramachandran.subramanian@alte-leipziger.de>
To: "pgsql-novice@lists.postgresql.org" <pgsql-novice@lists.postgresql.org>
Date: 2026-05-13T10:15:34Z
Lists: pgsql-novice
Hello,

I am running PG V16.13.

I see the autovacuum is on , but when I look at postgresql.conf all the relevant lines are commented out.  How should I understand this ?

LG

Ram




postgres=# show autovacuum
postgres-# ;
autovacuum
------------
on
(1 row)



#------------------------------------------------------------------------------
# AUTOVACUUM
#------------------------------------------------------------------------------

#autovacuum = on                        # Enable autovacuum subprocess?  'on'
                                        # requires track_counts to also be on.
#autovacuum_max_workers = 3             # max number of autovacuum subprocesses
                                        # (change requires restart)
#autovacuum_naptime = 1min              # time between autovacuum runs
#autovacuum_vacuum_threshold = 50       # min number of row updates before
                                        # vacuum
#autovacuum_vacuum_insert_threshold = 1000      # min number of row inserts
                                        # before vacuum; -1 disables insert
                                        # vacuums
#autovacuum_analyze_threshold = 50      # min number of row updates before
                                        # analyze
#autovacuum_vacuum_scale_factor = 0.2   # fraction of table size before vacuum
#autovacuum_vacuum_insert_scale_factor = 0.2    # fraction of inserts over table
                                        # size before insert vacuum
#autovacuum_analyze_scale_factor = 0.1  # fraction of table size before analyze
#autovacuum_freeze_max_age = 200000000  # maximum XID age before forced vacuum
                                        # (change requires restart)
#autovacuum_multixact_freeze_max_age = 400000000        # maximum multixact age
                                        # before forced vacuum
                                        # (change requires restart)
#autovacuum_vacuum_cost_delay = 2ms     # default vacuum cost delay for
                                        # autovacuum, in milliseconds;
                                        # -1 means use vacuum_cost_delay
#autovacuum_vacuum_cost_limit = -1      # default vacuum cost limit for
                                        # autovacuum, -1 means use
                                        # vacuum_cost_limit


Freundliche Grüße

i. A. Ramachandran Subramanian
Zentralbereich Informationstechnologie

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