2000-06-04 03:44:38 +02:00
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#
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# PostgreSQL configuration file
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# -----------------------------
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#
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# This file consists of lines of the form
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#
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# name = value
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#
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# (The `=' is optional.) White space is collapsed, comments are
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# introduced by `#' anywhere on a line. The complete list of option
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# names and allowed values can be found in the PostgreSQL
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# documentation. Examples are:
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#log_connections = on
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#fsync = off
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2000-12-03 22:12:19 +01:00
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#max_connections = 64
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2000-06-04 03:44:38 +02:00
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# Any option can also be given as a command line switch to the
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2000-12-03 22:12:19 +01:00
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# postmaster, e.g., 'postmaster -c log_connections=on'. Some options
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# can be set at run-time with the 'SET' SQL command.
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2001-01-24 19:37:31 +01:00
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#========================================================================
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#
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# Connection Parameters
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#
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#tcpip_socket = false
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#ssl = false
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#max_connections = 32 # 1-1024
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#port = 5432
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#hostname_lookup = false
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#show_source_port = false
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2001-01-24 20:43:33 +01:00
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#unix_socket_directory = ''
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#unix_socket_group = ''
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2001-01-24 19:37:31 +01:00
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#unix_socket_permissions = 0777
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2001-01-24 20:43:33 +01:00
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#virtual_host = ''
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2001-01-24 19:37:31 +01:00
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2001-01-24 20:43:33 +01:00
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#krb_server_keyfile = ''
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2001-01-24 19:37:31 +01:00
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#
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# Performance
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#
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#sort_mem = 512
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#shared_buffers = 2*max_connections # min 16
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#fsync = true
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#
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# Optimizer Parameters
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#
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#enable_seqscan = true
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#enable_indexscan = true
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#enable_tidscan = true
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#enable_sort = true
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#enable_nestloop = true
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#enable_mergejoin = true
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#enable_hashjoin = true
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#ksqo = false
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#geqo = true
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#effective_cache_size = 1000 # default in 8k pages
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#random_page_cost = 4
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#cpu_tuple_cost = 0.01
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#cpu_index_tuple_cost = 0.001
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#cpu_operator_cost = 0.0025
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#geqo_selection_bias = 2.0 # range 1.5-2.0
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#
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# GEQO Optimizer Parameters
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#
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#geqo_threshold = 11
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#geqo_pool_size = 0 #default based in tables, range 128-1024
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#geqo_effort = 1
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#geqo_generations = 0
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#geqo_random_seed = -1 # auto-compute seed
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#
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# Inheritance
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#
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#sql_inheritance = true
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#
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# Deadlock
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#
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#deadlock_timeout = 1000
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#
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# Expression Depth Limitation
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#
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#max_expr_depth = 10000 # min 10
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#
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# Write-ahead log (WAL)
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#
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#wal_buffers = 8 # min 4
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#wal_files = 0 # range 0-64
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2001-03-16 06:44:33 +01:00
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#wal_sync_method = fsync # fsync or fdatasync or open_sync or open_datasync
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# Note: default wal_sync_method varies across platforms
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2001-01-24 19:37:31 +01:00
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#wal_debug = 0 # range 0-16
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2001-02-18 05:50:43 +01:00
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#commit_delay = 0 # range 0-100000
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2001-02-26 01:50:08 +01:00
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#commit_siblings = 5 # range 1-1000
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XLOG (and related) changes:
* Store two past checkpoint locations, not just one, in pg_control.
On startup, we fall back to the older checkpoint if the newer one
is unreadable. Also, a physical copy of the newest checkpoint record
is kept in pg_control for possible use in disaster recovery (ie,
complete loss of pg_xlog). Also add a version number for pg_control
itself. Remove archdir from pg_control; it ought to be a GUC
parameter, not a special case (not that it's implemented yet anyway).
* Suppress successive checkpoint records when nothing has been entered
in the WAL log since the last one. This is not so much to avoid I/O
as to make it actually useful to keep track of the last two
checkpoints. If the things are right next to each other then there's
not a lot of redundancy gained...
* Change CRC scheme to a true 64-bit CRC, not a pair of 32-bit CRCs
on alternate bytes. Polynomial borrowed from ECMA DLT1 standard.
* Fix XLOG record length handling so that it will work at BLCKSZ = 32k.
* Change XID allocation to work more like OID allocation. (This is of
dubious necessity, but I think it's a good idea anyway.)
* Fix a number of minor bugs, such as off-by-one logic for XLOG file
wraparound at the 4 gig mark.
* Add documentation and clean up some coding infelicities; move file
format declarations out to include files where planned contrib
utilities can get at them.
* Checkpoint will now occur every CHECKPOINT_SEGMENTS log segments or
every CHECKPOINT_TIMEOUT seconds, whichever comes first. It is also
possible to force a checkpoint by sending SIGUSR1 to the postmaster
(undocumented feature...)
* Defend against kill -9 postmaster by storing shmem block's key and ID
in postmaster.pid lockfile, and checking at startup to ensure that no
processes are still connected to old shmem block (if it still exists).
* Switch backends to accept SIGQUIT rather than SIGUSR1 for emergency
stop, for symmetry with postmaster and xlog utilities. Clean up signal
handling in bootstrap.c so that xlog utilities launched by postmaster
will react to signals better.
* Standalone bootstrap now grabs lockfile in target directory, as added
insurance against running it in parallel with live postmaster.
2001-03-13 02:17:06 +01:00
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#checkpoint_segments = 3 # in logfile segments (16MB each), min 1
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2001-02-26 01:50:08 +01:00
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#checkpoint_timeout = 300 # in seconds, range 30-3600
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2001-01-24 19:37:31 +01:00
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#
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# Debug display
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#
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#silent_mode = false
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#log_connections = false
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#log_timestamp = false
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#log_pid = false
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#debug_level = 0 # range 0-16
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#debug_print_query = false
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#debug_print_parse = false
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#debug_print_rewritten = false
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#debug_print_plan = false
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#debug_pretty_print = false
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#ifdef USE_ASSERT_CHECKING
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#debug_assertions = true
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#endif
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#
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# Syslog
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#
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#ifdef ENABLE_SYSLOG
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#syslog = 0 # range 0-2
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2001-01-24 20:43:33 +01:00
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#syslog_facility = 'LOCAL0'
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#syslog_ident = 'postgres'
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2001-01-24 19:37:31 +01:00
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#endif
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#
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# Statistics
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#
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#show_parser_stats = false
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#show_planner_stats = false
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#show_executor_stats = false
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#show_query_stats = false
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#ifdef BTREE_BUILD_STATS
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#show_btree_build_stats = false
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#endif
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#
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# Lock Tracing
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#
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#trace_notify = false
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#ifdef LOCK_DEBUG
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#trace_locks = false
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#trace_userlocks = false
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#trace_spinlocks = false
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#debug_deadlocks = false
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#trace_lock_oidmin = 16384
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#trace_lock_table = 0
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#endif
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