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Autovacuum loose end mop-up. Provide autovacuum-specific vacuum cost

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delay and limit, both as global GUCs and as table-specific entries in
pg_autovacuum.  stats_reset_on_server_start is now OFF by default,
but a reset is forced if we did WAL replay.  XID-wrap vacuums do not
ANALYZE, but do FREEZE if it's a template database.  Alvaro Herrera
This commit is contained in:
Tom Lane
2005-08-11 21:11:50 +00:00
parent f6c30d54fa
commit d90c531188
18 changed files with 456 additions and 209 deletions
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6
src/backend/utils/misc/postgresql.conf.sample
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@ -288,7 +288,7 @@
#stats_command_string = off
#stats_block_level = off
#stats_row_level = off
#stats_reset_on_server_start = on
#stats_reset_on_server_start = off
#---------------------------------------------------------------------------
@ -301,6 +301,10 @@
#autovacuum_analyze_threshold = 500 # min # of tuple updates before analyze
#autovacuum_vacuum_scale_factor = 0.4 # fraction of rel size before vacuum
#autovacuum_analyze_scale_factor = 0.2 # fraction of rel size before analyze
#autovacuum_vacuum_cost_delay = -1 # default vacuum cost delay for autovac
# -1 means use vacuum_cost_delay
#autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for autovac
# -1 means use vacuum_cost_limit
#---------------------------------------------------------------------------