# -----------------------------
# PostgreSQL configuration file
# -----------------------------
#
# This file consists of lines of the form:
#
#   name = value
#
# (The '=' is optional.) White space may be used. Comments are introduced
# with '#' anywhere on a line. The complete list of option names and
# allowed values can be found in the PostgreSQL documentation. The
# commented-out settings shown in this file represent the default values.
#
# Any option can also be given as a command line switch to the
# postmaster, e.g. 'postmaster -c log_connections=on'. Some options
# can be changed at run-time with the 'SET' SQL command.
#
# This file is read on postmaster startup and when the postmaster
# receives a SIGHUP. If you edit the file on a running system, you have 
# to SIGHUP the postmaster for the changes to take effect, or use 
# "pg_ctl reload".


#---------------------------------------------------------------------------
# CONNECTIONS AND AUTHENTICATION
#---------------------------------------------------------------------------

# - Connection Settings -

tcpip_socket = true
ssl = false

max_connections = 512
superuser_reserved_connections = 2

rendezvous_name='io'
port = 5432

#unix_socket_directory = '/var/postgres'
#unix_socket_group = 'postgres'
#unix_socket_permissions = 0777	# octal

# - Security & Authentication -

authentication_timeout = 20	# 1-600, in seconds
password_encryption = true
db_user_namespace = false


#---------------------------------------------------------------------------
# RESOURCE USAGE (except WAL)
#---------------------------------------------------------------------------

# - Memory -

shared_buffers = 8192		# min 16, at least max_connections*2, 8KB each
sort_mem = 2048			# min 64, size in KB
vacuum_mem = 65536		# min 1024, size in KB

# - Free Space Map -

#max_fsm_pages = 20000		# min max_fsm_relations*16, 6 bytes each
#max_fsm_relations = 1000	# min 100, ~50 bytes each

# - Kernel Resource Usage -

#max_files_per_process = 1000	# min 25
#preload_libraries = ''


#---------------------------------------------------------------------------
# WRITE AHEAD LOG
#---------------------------------------------------------------------------

# - Settings -

fsync = true			# turns forced synchronization on or off
wal_sync_method = fsync		# the default varies across platforms:
				# fsync, fdatasync, open_sync, or open_datasync
wal_buffers = 128		# min 4, 8KB each

# - Checkpoints -

checkpoint_segments = 24	# in logfile segments, min 1, 16MB each
checkpoint_timeout = 300	# range 30-3600, in seconds
checkpoint_warning = 30		# 0 is off, in seconds
commit_delay = 15000		# range 0-100000, in microseconds
commit_siblings = 64		# range 1-1000


#---------------------------------------------------------------------------
# QUERY TUNING
#---------------------------------------------------------------------------

# - Planner Method Enabling -

enable_hashagg = true
enable_hashjoin = true
enable_indexscan = true
enable_mergejoin = true
enable_nestloop = true
enable_seqscan = true
enable_sort = true
enable_tidscan = true

# - Planner Cost Constants -

effective_cache_size = 16000	# typically 8KB each
random_page_cost = 2		# units are one sequential page fetch cost
cpu_tuple_cost = 0.01		# (same)
cpu_index_tuple_cost = 0.001	# (same)
cpu_operator_cost = 0.0025	# (same)

# - Genetic Query Optimizer -

geqo = false
geqo_threshold = 11
geqo_effort = 1
geqo_generations = 0
geqo_pool_size = 0		# default based on tables in statement,
				# range 128-1024
geqo_selection_bias = 2.0	# range 1.5-2.0

# - Other Planner Options -

default_statistics_target = 100	# range 1-1000
from_collapse_limit = 8
join_collapse_limit = 8		# 1 disables collapsing of explicit JOINs


#---------------------------------------------------------------------------
# ERROR REPORTING AND LOGGING
#---------------------------------------------------------------------------

# - Syslog -

#syslog = 2			# range 0-2; 0=stdout; 1=both; 2=syslog
#syslog_facility = 'LOCAL0'
#syslog_ident = 'postgres'

# - When to Log -

client_min_messages = notice	# Values, in order of decreasing detail:
				#   debug5, debug4, debug3, debug2, debug1,
				#   log, info, notice, warning, error

log_min_messages = info		# 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 = panic # Values in order of increasing severity:
				 #   debug5, debug4, debug3, debug2, debug1,
				 #   info, notice, warning, error, panic(off)
				 
log_min_duration_statement = -1 # Log all statements whose
				 # execution time exceeds the value, in
				 # milliseconds.  Zero prints all queries.
				 # Minus-one disables.

silent_mode = false		 # DO NOT USE without Syslog!

# - What to Log -

#debug_print_parse = false
#debug_print_rewritten = false
#debug_print_plan = false
#debug_pretty_print = false
#log_connections = false
#log_duration = false
#log_pid = false
#log_statement = false
#log_timestamp = false
#log_hostname = false
#log_source_port = false


#---------------------------------------------------------------------------
# RUNTIME STATISTICS
#---------------------------------------------------------------------------

# - Statistics Monitoring -

log_parser_stats = false
log_planner_stats = false
log_executor_stats = false
log_statement_stats = false

# - Query/Index Statistics Collector -

stats_start_collector = false
stats_command_string = false
stats_block_level = false
stats_row_level = false
stats_reset_on_server_start = true


#---------------------------------------------------------------------------
# CLIENT CONNECTION DEFAULTS
#---------------------------------------------------------------------------

# - Statement Behavior -

search_path = '$user,public'	# schema names
check_function_bodies = true
default_transaction_isolation = 'read committed'
default_transaction_read_only = false
statement_timeout = 25000	# 0 is disabled, in milliseconds

# - Locale and Formatting -

datestyle = 'iso, us'
#timezone = unknown		# actually, defaults to TZ environment setting
#australian_timezones = false
#extra_float_digits = 0		# min -15, max 2
#client_encoding = sql_ascii	# actually, defaults to database encoding

# These settings are initialized by initdb -- they may be changed
lc_messages = 'C'		# locale for system error message strings
lc_monetary = 'C'		# locale for monetary formatting
lc_numeric = 'C'		# locale for number formatting
lc_time = 'C'			# locale for time formatting

# - Other Defaults -

explain_pretty_print = true
#dynamic_library_path = '$libdir'
#max_expr_depth = 10000		# min 10


#---------------------------------------------------------------------------
# LOCK MANAGEMENT
#---------------------------------------------------------------------------

deadlock_timeout = 5000		# in milliseconds
#max_locks_per_transaction = 64	# min 10, ~260*max_connections bytes each


#---------------------------------------------------------------------------
# VERSION/PLATFORM COMPATIBILITY
#---------------------------------------------------------------------------

# - Previous Postgres Versions -

#add_missing_from = true
#regex_flavor = advanced	# advanced, extended, or basic
#sql_inheritance = true

# - Other Platforms & Clients -

#transform_null_equals = false