PostgreSQL settings to aggressively vacuum, this config was used for an 18000 TPS steadystate workload on i2.xlarge

gistfile1.txt

#------------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS
#------------------------------------------------------------------------------

#autovacuum = on			# Enable autovacuum subprocess?  'on'
					# requires track_counts to also be on.
log_autovacuum_min_duration = 0	# -1 disables, 0 logs all actions and
					# their durations, > 0 logs only
					# actions running at least this number
					# of milliseconds.
autovacuum_max_workers = 10		# max number of autovacuum subprocesses
					# (change requires restart)
autovacuum_naptime = 15s		# time between autovacuum runs
autovacuum_vacuum_threshold = 25	# min number of row updates before
					# vacuum
autovacuum_analyze_threshold = 10	# min number of row updates before
					# analyze
autovacuum_vacuum_scale_factor = 0.1	# fraction of table size before vacuum
autovacuum_analyze_scale_factor = 0.05	# fraction of table size before analyze
#autovacuum_freeze_max_age = 200000000	# maximum XID age before forced vacuum
					# (change requires restart)
autovacuum_vacuum_cost_delay = 5ms	# default vacuum cost delay for
					# autovacuum, in milliseconds;
					# -1 means use vacuum_cost_delay
autovacuum_vacuum_cost_limit = 1000	# default vacuum cost limit for
					# autovacuum, -1 means use
					# vacuum_cost_limit
vacuum_freeze_min_age = 10000000
vacuum_freeze_table_age = 150000000