Memory Problem - Mailing list pgsql-general
| From | Volkan YAZICI |
|---|---|
| Subject | Memory Problem |
| Date | |
| Msg-id | 87abh0radx.fsf@alamut.mobiliz.com.tr Whole thread Raw |
| Responses |
Re: Memory Problem
|
| List | pgsql-general |
Hi,
We have an IBM System x3850 machine running on RHEL 4.5 Cluster Suite
with high-availability enabled. During a huge delete process, PostgreSQL
(8.3.1) exhausts available memory and receives an OOM kill.
$ /srv/usr/bin/psql -e -f ~/schemas/working/test_1_5_1_0-schema-delete-bogus-2-20080625.sql 1_5_1_0_20080625
...
DELETE FROM mudailyreportlog
WHERE NOT EXISTS (SELECT 1
FROM mobileunit
WHERE mobileunit.muid = mudailyreportlog.muid);
DELETE 0
DELETE FROM mudistancelog
WHERE NOT EXISTS (SELECT 1
FROM mobileunit
WHERE mobileunit.muid = mudistancelog.muid);
psql:/home/postgres/schemas/working/test_1_5_1_0-schema-delete-bogus-2-20080625.sql:16: server closed the connection
unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
psql:/home/postgres/schemas/working/test_1_5_1_0-schema-delete-bogus-2-20080625.sql:16: connection to server was lost
Above "DELETE FROM mudistancelog ..." query runs for nearly 1 hour and
then causes PostgreSQL to receive an OOM kill. mudistancelog is a table
of size ~11GiG. And below is the execution plan of the DELETE statement.
Seq Scan on mudistancelog (cost=0.00..1730580560.83 rows=104441936 width=6)
Filter: (NOT (subplan))
SubPlan
-> Index Scan using pk_mobileunit_muid on mobileunit (cost=0.00..8.27 rows=1 width=0)
Index Cond: (muid = $0)
Here are the related PostgreSQL log lines.
2008-07-02 10:36:09.032 EEST LOG: server process (PID 22391) was terminated by signal 9: Killed
2008-07-02 10:36:09.032 EEST LOG: terminating any other active server processes
...
test_1_5_1_0 emove 2008-07-02 10:36:09.151 EEST FATAL: the database system is in recovery mode
test_1_5_1_0 emove 2008-07-02 10:36:09.152 EEST FATAL: the database system is in recovery mode
test_1_5_1_0 emove 2008-07-02 10:36:09.159 EEST FATAL: the database system is in recovery mode
...
test_1_5_1_0 emove 2008-07-02 10:36:09.209 EEST FATAL: the database system is in recovery mode
2008-07-02 10:36:09.210 EEST LOG: all server processes terminated; reinitializing
test_1_5_1_0 emove 2008-07-02 10:36:09.528 EEST FATAL: the database system is in recovery mode
...
test_1_5_0_0 postgres 2008-07-02 10:36:09.537 EEST FATAL: the database system is in recovery mode
2008-07-02 10:36:09.540 EEST LOG: database system was interrupted; last known up at 2008-07-02 10:12:57 EEST
test_1_5_1_0 emove 2008-07-02 10:36:09.542 EEST FATAL: the database system is in recovery mode
...
test_1_5_1_0 emove 2008-07-02 10:36:09.567 EEST FATAL: the database system is in recovery mode
2008-07-02 10:36:09.567 EEST LOG: database system was not properly shut down; automatic recovery in progress
test_1_5_1_0 emove 2008-07-02 10:36:09.572 EEST FATAL: the database system is in recovery mode
test_1_5_1_0 emove 2008-07-02 10:36:09.574 EEST FATAL: the database system is in recovery mode
test_1_5_1_0 emove 2008-07-02 10:36:09.575 EEST FATAL: the database system is in recovery mode
test_1_5_1_0 emove 2008-07-02 10:36:09.577 EEST FATAL: the database system is in recovery mode
2008-07-02 10:36:09.578 EEST LOG: redo starts at 4F/2600EFF0
test_1_5_1_0 emove 2008-07-02 10:36:09.578 EEST FATAL: the database system is in recovery mode
2008-07-02 10:37:09.073 EEST LOG: autovacuum launcher started
2008-07-02 10:37:09.074 EEST LOG: database system is ready to accept connections
I've attached my postgresql.conf and related /var/log/messages
parts. (Server has a memory and swap space of size 8GiG.) What might be
causing this problem? How can I configure postgresql.conf to avoid such
situations? Any kind of help will be really appreciated.
Regards.
Jul 2 10:33:00 mobilizc1 kernel: oom-killer: gfp_mask=0x1d2
Jul 2 10:33:00 mobilizc1 kernel: Mem-info:
Jul 2 10:33:00 mobilizc1 kernel: Node 0 DMA per-cpu:
Jul 2 10:33:00 mobilizc1 kernel: cpu 0 hot: low 2, high 6, batch 1
Jul 2 10:33:00 mobilizc1 kernel: cpu 0 cold: low 0, high 2, batch 1
Jul 2 10:33:00 mobilizc1 kernel: cpu 1 hot: low 2, high 6, batch 1
Jul 2 10:33:00 mobilizc1 kernel: cpu 1 cold: low 0, high 2, batch 1
Jul 2 10:33:00 mobilizc1 kernel: cpu 2 hot: low 2, high 6, batch 1
Jul 2 10:33:00 mobilizc1 kernel: cpu 2 cold: low 0, high 2, batch 1
Jul 2 10:33:00 mobilizc1 kernel: cpu 3 hot: low 2, high 6, batch 1
Jul 2 10:33:00 mobilizc1 kernel: cpu 3 cold: low 0, high 2, batch 1
Jul 2 10:33:00 mobilizc1 kernel: cpu 4 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 4 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 5 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 5 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 6 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 6 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 7 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 7 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 8 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 8 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 9 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 9 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 10 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 10 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 11 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 11 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 12 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 12 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 13 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 13 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 14 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 14 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 15 hot: low 2, high 6, batch 1
Jul 2 10:36:09 mobilizc1 kernel: cpu 15 cold: low 0, high 2, batch 1
Jul 2 10:36:09 mobilizc1 kernel: Node 0 Normal per-cpu:
Jul 2 10:36:09 mobilizc1 kernel: cpu 0 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 0 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 1 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 1 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 2 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 2 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 3 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 3 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 4 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 4 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 5 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 5 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 6 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 6 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 7 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 7 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 8 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 8 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 9 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 9 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 10 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 10 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 11 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 11 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 12 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 12 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 13 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 13 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 14 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 14 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 15 hot: low 32, high 96, batch 16
Jul 2 10:36:09 mobilizc1 kernel: cpu 15 cold: low 0, high 32, batch 16
Jul 2 10:36:09 mobilizc1 kernel: Node 0 HighMem per-cpu: empty
Jul 2 10:36:09 mobilizc1 kernel:
Jul 2 10:36:09 mobilizc1 kernel: Free pages: 13592kB (0kB HighMem)
Jul 2 10:36:09 mobilizc1 kernel: Active:1041573 inactive:963333 dirty:0 writeback:0 unstable:0 free:3398 slab:9922
mapped:1871737pagetables:10366
Jul 2 10:36:09 mobilizc1 kernel: Node 0 DMA free:10568kB min:4kB low:8kB high:12kB active:0kB inactive:0kB
present:16384kBpages_scanned:263364 all_unreclaimable? yes
Jul 2 10:36:09 mobilizc1 kernel: protections[]: 0 0 0
Jul 2 10:36:09 mobilizc1 kernel: Node 0 Normal free:3024kB min:3060kB low:6120kB high:9180kB active:4166292kB
inactive:3853332kBpresent:9420800kB pages_scanned:8846310 all_unreclaimable? yes
Jul 2 10:36:09 mobilizc1 kernel: protections[]: 0 0 0
Jul 2 10:36:09 mobilizc1 kernel: Node 0 HighMem free:0kB min:128kB low:256kB high:384kB active:0kB inactive:0kB
present:0kBpages_scanned:0 all_unreclaimable? no
Jul 2 10:36:09 mobilizc1 kernel: protections[]: 0 0 0
Jul 2 10:36:09 mobilizc1 kernel: Node 0 DMA: 0*4kB 1*8kB 4*16kB 4*32kB 6*64kB 2*128kB 0*256kB 1*512kB 1*1024kB
0*2048kB2*4096kB = 10568kB
Jul 2 10:36:09 mobilizc1 kernel: Node 0 Normal: 14*4kB 7*8kB 6*16kB 16*32kB 0*64kB 0*128kB 1*256kB 0*512kB 0*1024kB
1*2048kB0*4096kB = 3024kB
Jul 2 10:36:09 mobilizc1 kernel: Node 0 HighMem: empty
Jul 2 10:36:09 mobilizc1 kernel: Swap cache: add 8560590, delete 8560579, find 579410/614459, race 1+55
Jul 2 10:36:09 mobilizc1 kernel: Free swap: 0kB
Jul 2 10:36:09 mobilizc1 kernel: 2359296 pages of RAM
Jul 2 10:36:09 mobilizc1 kernel: 319300 reserved pages
Jul 2 10:36:09 mobilizc1 kernel: 69644 pages shared
Jul 2 10:36:09 mobilizc1 kernel: 42 pages swap cached
Jul 2 10:36:09 mobilizc1 kernel: Out of Memory: Killed process 22391 (postgres).
# -----------------------------
# PostgreSQL configuration file
# -----------------------------
#
# This file consists of lines of the form:
#
# name = value
#
# (The "=" is optional.) Whitespace may be used. Comments are introduced with
# "#" anywhere on a line. The complete list of parameter names and allowed
# values can be found in the PostgreSQL documentation.
#
# The commented-out settings shown in this file represent the default values.
# Re-commenting a setting is NOT sufficient to revert it to the default value;
# you need to reload the server.
#
# This file is read on server startup and when the server receives a SIGHUP
# signal. If you edit the file on a running system, you have to SIGHUP the
# server for the changes to take effect, or use "pg_ctl reload". Some
# parameters, which are marked below, require a server shutdown and restart to
# take effect.
#
# Any parameter can also be given as a command-line option to the server, e.g.,
# "postgres -c log_connections=on". Some paramters can be changed at run time
# with the "SET" SQL command.
#
# Memory units: kB = kilobytes MB = megabytes GB = gigabytes
# Time units: ms = milliseconds s = seconds min = minutes h = hours d = days
#------------------------------------------------------------------------------
# FILE LOCATIONS
#------------------------------------------------------------------------------
# The default values of these variables are driven from the -D command-line
# option or PGDATA environment variable, represented here as ConfigDir.
#data_directory = 'ConfigDir' # use data in another directory
# (change requires restart)
#hba_file = 'ConfigDir/pg_hba.conf' # host-based authentication file
# (change requires restart)
#ident_file = 'ConfigDir/pg_ident.conf' # ident configuration file
# (change requires restart)
# If external_pid_file is not explicitly set, no extra PID file is written.
#external_pid_file = '(none)' # write an extra PID file
# (change requires restart)
#------------------------------------------------------------------------------
# CONNECTIONS AND AUTHENTICATION
#------------------------------------------------------------------------------
# - Connection Settings -
listen_addresses = '*' # what IP address(es) to listen on;
# comma-separated list of addresses;
# defaults to 'localhost', '*' = all
# (change requires restart)
#port = 5432 # (change requires restart)
max_connections = 500 # (change requires restart)
# Note: Increasing max_connections costs ~400 bytes of shared memory per
# connection slot, plus lock space (see max_locks_per_transaction). You might
# also need to raise shared_buffers to support more connections.
superuser_reserved_connections = 3 # (change requires restart)
#unix_socket_directory = '' # (change requires restart)
#unix_socket_group = '' # (change requires restart)
#unix_socket_permissions = 0777 # begin with 0 to use octal notation
# (change requires restart)
#bonjour_name = '' # defaults to the computer name
# (change requires restart)
# - Security and Authentication -
#authentication_timeout = 1min # 1s-600s
#ssl = off # (change requires restart)
#ssl_ciphers = 'ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH' # allowed SSL ciphers
# (change requires restart)
#password_encryption = on
#db_user_namespace = off
# Kerberos and GSSAPI
#krb_server_keyfile = '' # (change requires restart)
#krb_srvname = 'postgres' # (change requires restart, Kerberos only)
#krb_server_hostname = '' # empty string matches any keytab entry
# (change requires restart, Kerberos only)
#krb_caseins_users = off # (change requires restart)
#krb_realm = '' # (change requires restart)
# - TCP Keepalives -
# see "man 7 tcp" for details
#tcp_keepalives_idle = 0 # TCP_KEEPIDLE, in seconds;
# 0 selects the system default
#tcp_keepalives_interval = 0 # TCP_KEEPINTVL, in seconds;
# 0 selects the system default
#tcp_keepalives_count = 0 # TCP_KEEPCNT;
# 0 selects the system default
#------------------------------------------------------------------------------
# RESOURCE USAGE (except WAL)
#------------------------------------------------------------------------------
# - Memory -
shared_buffers = 512MB # min 128kB or max_connections*16kB
# (change requires restart)
#temp_buffers = 8MB # min 800kB
#max_prepared_transactions = 5 # can be 0 or more
# (change requires restart)
# Note: Increasing max_prepared_transactions costs ~600 bytes of shared memory
# per transaction slot, plus lock space (see max_locks_per_transaction).
work_mem = 8MB # min 64kB
maintenance_work_mem = 512MB # min 1MB
#max_stack_depth = 2MB # min 100kB
# - Free Space Map -
max_fsm_pages = 204800 # min max_fsm_relations*16, 6 bytes each
# (change requires restart)
max_fsm_relations = 8192 # min 100, ~70 bytes each
# (change requires restart)
# - Kernel Resource Usage -
#max_files_per_process = 1000 # min 25
# (change requires restart)
#shared_preload_libraries = '' # (change requires restart)
# - Cost-Based Vacuum Delay -
#vacuum_cost_delay = 0 # 0-1000 milliseconds
#vacuum_cost_page_hit = 1 # 0-10000 credits
#vacuum_cost_page_miss = 10 # 0-10000 credits
#vacuum_cost_page_dirty = 20 # 0-10000 credits
#vacuum_cost_limit = 200 # 1-10000 credits
# - Background Writer -
#bgwriter_delay = 200ms # 10-10000ms between rounds
#bgwriter_lru_maxpages = 100 # 0-1000 max buffers written/round
#bgwriter_lru_multiplier = 2.0 # 0-10.0 multipler on buffers scanned/round
#------------------------------------------------------------------------------
# WRITE AHEAD LOG
#------------------------------------------------------------------------------
# - Settings -
#fsync = on # turns forced synchronization on or off
#synchronous_commit = on # immediate fsync at commit
#wal_sync_method = fsync # the default is the first option
# supported by the operating system:
# open_datasync
# fdatasync
# fsync
# fsync_writethrough
# open_sync
#full_page_writes = on # recover from partial page writes
#wal_buffers = 64kB # min 32kB
# (change requires restart)
#wal_writer_delay = 200ms # 1-10000 milliseconds
#commit_delay = 0 # range 0-100000, in microseconds
#commit_siblings = 5 # range 1-1000
# - Checkpoints -
checkpoint_segments = 128 # in logfile segments, min 1, 16MB each
checkpoint_timeout = 1h # range 30s-1h
checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0
checkpoint_warning = 1min # 0 is off
# - Archiving -
#archive_mode = off # allows archiving to be done
# (change requires restart)
#archive_command = '' # command to use to archive a logfile segment
#archive_timeout = 0 # force a logfile segment switch after this
# time; 0 is off
#------------------------------------------------------------------------------
# QUERY TUNING
#------------------------------------------------------------------------------
# - Planner Method Configuration -
#enable_bitmapscan = on
#enable_hashagg = on
#enable_hashjoin = on
#enable_indexscan = on
#enable_mergejoin = on
#enable_nestloop = on
#enable_seqscan = on
#enable_sort = on
#enable_tidscan = on
# - Planner Cost Constants -
#seq_page_cost = 1.0 # measured on an arbitrary scale
#random_page_cost = 4.0 # same scale as above
#cpu_tuple_cost = 0.01 # same scale as above
#cpu_index_tuple_cost = 0.005 # same scale as above
#cpu_operator_cost = 0.0025 # same scale as above
#effective_cache_size = 128MB
# - Genetic Query Optimizer -
#geqo = on
#geqo_threshold = 12
#geqo_effort = 5 # range 1-10
#geqo_pool_size = 0 # selects default based on effort
#geqo_generations = 0 # selects default based on effort
#geqo_selection_bias = 2.0 # range 1.5-2.0
# - Other Planner Options -
#default_statistics_target = 10 # range 1-1000
#constraint_exclusion = off
#from_collapse_limit = 8
#join_collapse_limit = 8 # 1 disables collapsing of explicit
# JOIN clauses
#------------------------------------------------------------------------------
# ERROR REPORTING AND LOGGING
#------------------------------------------------------------------------------
# - Where to Log -
#log_destination = 'stderr' # Valid values are combinations of
# stderr, csvlog, syslog and eventlog,
# depending on platform. csvlog
# requires logging_collector to be on.
# This is used when logging to stderr:
logging_collector = on # Enable capturing of stderr and csvlog
# into log files. Required to be on for
# csvlogs.
# (change requires restart)
# These are only used if logging_collector is on:
log_directory = '/srv/pg/pg_log' # directory where log files are written,
# can be absolute or relative to PGDATA
log_filename = '%Y-%m-%d_%H%M%S.log' # log file name pattern,
# can include strftime() escapes
#log_truncate_on_rotation = off # If on, an existing log file of the
# same name as the new log file will be
# truncated rather than appended to.
# But such truncation only occurs on
# time-driven rotation, not on restarts
# or size-driven rotation. Default is
# off, meaning append to existing files
# in all cases.
log_rotation_age = 7d # Automatic rotation of logfiles will
# happen after that time. 0 to disable.
log_rotation_size = 0MB # Automatic rotation of logfiles will
# happen after that much log output.
# 0 to disable.
# These are relevant when logging to syslog:
#syslog_facility = 'LOCAL0'
#syslog_ident = 'postgres'
# - When to Log -
#client_min_messages = warning # values in order of decreasing detail:
# debug5
# debug4
# debug3
# debug2
# debug1
# log
# notice
# warning
# error
#log_min_messages = warning # values in order of decreasing detail:
# debug5
# debug4
# debug3
# debug2
# debug1
# info
# notice
# warning
# error
# log
# fatal
# panic
#log_error_verbosity = default # terse, default, or verbose messages
#log_min_error_statement = warning # values in order of decreasing detail:
# debug5
# debug4
# debug3
# debug2
# debug1
# info
# notice
# warning
# error
# log
# fatal
# panic (effectively off)
log_min_duration_statement = 1000 # -1 is disabled, 0 logs all statements
# and their durations, > 0 logs only
# statements running at least this time.
#silent_mode = off # DO NOT USE without syslog or
# logging_collector
# (change requires restart)
# - What to Log -
#debug_print_parse = off
#debug_print_rewritten = off
#debug_print_plan = off
#debug_pretty_print = off
#log_checkpoints = off
#log_connections = off
#log_disconnections = off
#log_duration = on
#log_hostname = off
log_line_prefix = '%d %u %m ' # special values:
# %u = user name
# %d = database name
# %r = remote host and port
# %h = remote host
# %p = process ID
# %t = timestamp without milliseconds
# %m = timestamp with milliseconds
# %i = command tag
# %c = session ID
# %l = session line number
# %s = session start timestamp
# %v = virtual transaction ID
# %x = transaction ID (0 if none)
# %q = stop here in non-session
# processes
# %% = '%'
# e.g. '<%u%%%d> '
#log_lock_waits = off # log lock waits >= deadlock_timeout
#log_statement = 'all' # none, ddl, mod, all
#log_temp_files = -1 # log temporary files equal or larger
# than specified size;
# -1 disables, 0 logs all temp files
#log_timezone = unknown # actually, defaults to TZ environment
# setting
#------------------------------------------------------------------------------
# RUNTIME STATISTICS
#------------------------------------------------------------------------------
# - Query/Index Statistics Collector -
#track_activities = on
#track_counts = on
#update_process_title = on
# - Statistics Monitoring -
#log_parser_stats = off
#log_planner_stats = off
#log_executor_stats = off
#log_statement_stats = off
#------------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS
#------------------------------------------------------------------------------
autovacuum = on # Enable autovacuum subprocess? 'on'
# requires track_counts to also be on.
#log_autovacuum_min_duration = -1 # -1 disables, 0 logs all actions and
# their durations, > 0 logs only
# actions running at least that time.
autovacuum_max_workers = 6 # max number of autovacuum subprocesses
autovacuum_naptime = 1min # time between autovacuum runs
autovacuum_vacuum_threshold = 100 # min number of row updates before
# vacuum
autovacuum_analyze_threshold = 100 # min number of row updates before
# analyze
autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before 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_vacuum_cost_delay = 20 # default vacuum cost delay for
# autovacuum, -1 means use
# vacuum_cost_delay
autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for
# autovacuum, -1 means use
# vacuum_cost_limit
#------------------------------------------------------------------------------
# CLIENT CONNECTION DEFAULTS
#------------------------------------------------------------------------------
# - Statement Behavior -
#search_path = '"$user",public' # schema names
#default_tablespace = '' # a tablespace name, '' uses the default
#temp_tablespaces = '' # a list of tablespace names, '' uses
# only default tablespace
#check_function_bodies = on
#default_transaction_isolation = 'read committed'
#default_transaction_read_only = off
#session_replication_role = 'origin'
#statement_timeout = 0 # 0 is disabled
#vacuum_freeze_min_age = 100000000
#xmlbinary = 'base64'
#xmloption = 'content'
# - Locale and Formatting -
datestyle = 'iso, dmy'
#timezone = unknown # actually, defaults to TZ environment
# setting
#timezone_abbreviations = 'Default' # Select the set of available time zone
# abbreviations. Currently, there are
# Default
# Australia
# India
# You can create your own file in
# share/timezonesets/.
#extra_float_digits = 0 # min -15, max 2
client_encoding = utf8 # actually, defaults to database
# encoding
# These settings are initialized by initdb, but they can be changed.
lc_messages = 'tr_TR.UTF-8' # locale for system error message
# strings
lc_monetary = 'tr_TR.UTF-8' # locale for monetary formatting
lc_numeric = 'tr_TR.UTF-8' # locale for number formatting
lc_time = 'tr_TR.UTF-8' # locale for time formatting
# default configuration for text search
default_text_search_config = 'pg_catalog.turkish'
# - Other Defaults -
#explain_pretty_print = on
#dynamic_library_path = '$libdir'
#local_preload_libraries = ''
#------------------------------------------------------------------------------
# LOCK MANAGEMENT
#------------------------------------------------------------------------------
#deadlock_timeout = 1s
#max_locks_per_transaction = 64 # min 10
# (change requires restart)
# Note: Each lock table slot uses ~270 bytes of shared memory, and there are
# max_locks_per_transaction * (max_connections + max_prepared_transactions)
# lock table slots.
#------------------------------------------------------------------------------
# VERSION/PLATFORM COMPATIBILITY
#------------------------------------------------------------------------------
# - Previous PostgreSQL Versions -
#add_missing_from = off
#array_nulls = on
#backslash_quote = safe_encoding # on, off, or safe_encoding
#default_with_oids = off
#escape_string_warning = on
#regex_flavor = advanced # advanced, extended, or basic
#sql_inheritance = on
standard_conforming_strings = on
#synchronize_seqscans = on
# - Other Platforms and Clients -
#transform_null_equals = off
#------------------------------------------------------------------------------
# CUSTOMIZED OPTIONS
#------------------------------------------------------------------------------
#custom_variable_classes = '' # list of custom variable class names
pgsql-general by date: