Re: Optimizing POSTGRESQL config

Hello,

Attached to this email is the configuration file that
we are currently using for POSTGRESQL
(postgresql.txt).  We are using Apache webserver
together with PHP and PostgreSQL 7.3.2.  Our test
server has the following specs:  AMD Athlon 1.2 Gz
with 128 MB of ram. Any help and suggestions on the
matter would be very much appreciated.  Thank you.

Regards,
Joanne Formoso


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# 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".


#========================================================================


#
#    Connection Parameters
#
tcpip_socket = true
#ssl = false

max_connections = 64
#superuser_reserved_connections = 2

port = 5432
#hostname_lookup = false
#show_source_port = false

#unix_socket_directory = ''
#unix_socket_group = ''
#unix_socket_permissions = 0777    # octal

#virtual_host = ''

#krb_server_keyfile = ''


#
#    Shared Memory Size
#
shared_buffers = 11207        # min max_connections*2 or 16, 8KB each
#max_fsm_relations = 1000    # min 10, fsm is free space map, ~40 bytes
#max_fsm_pages = 10000        # min 1000, fsm is free space map, ~6 bytes
#max_locks_per_transaction = 64    # min 10
#wal_buffers = 8        # min 4, typically 8KB each

#
#    Non-shared Memory Sizes
#
sort_mem = 32168        # min 64, size in KB
#vacuum_mem = 8192        # min 1024, size in KB


#
#    Write-ahead log (WAL)
#
#checkpoint_segments = 3    # in logfile segments, min 1, 16MB each
#checkpoint_timeout = 300    # range 30-3600, in seconds
#
#commit_delay = 0        # range 0-100000, in microseconds
#commit_siblings = 5        # range 1-1000
#
fsync = false
#wal_sync_method = fsync    # the default varies across platforms:
#                # fsync, fdatasync, open_sync, or open_datasync
#wal_debug = 0            # range 0-16


#
#    Optimizer Parameters
#
#enable_seqscan = true
#enable_indexscan = true
#enable_tidscan = true
#enable_sort = true
#enable_nestloop = true
#enable_mergejoin = true
#enable_hashjoin = true

#effective_cache_size = 1000    # typically 8KB each
#random_page_cost = 4        # 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)

#default_statistics_target = 10    # range 1-1000

#
#    GEQO Optimizer Parameters
#
#geqo = true
#geqo_selection_bias = 2.0    # range 1.5-2.0
#geqo_threshold = 11
#geqo_pool_size = 0        # default based on tables in statement,
                # range 128-1024
#geqo_effort = 1
#geqo_generations = 0
#geqo_random_seed = -1        # auto-compute seed


#
#    Message display
#
#server_min_messages = notice    # Values, in order of decreasing detail:
                #   debug5, debug4, debug3, debug2, debug1,
                #   info, notice, warning, error, log, fatal,
                #   panic
#client_min_messages = notice    # Values, in order of decreasing detail:
                #   debug5, debug4, debug3, debug2, debug1,
                #   log, info, notice, warning, error
#silent_mode = false

#log_connections = false
#log_pid = false
#log_statement = false
#log_duration = false
#log_timestamp = false

#log_min_error_statement = error # Values in order of increasing severity:
                 #   debug5, debug4, debug3, debug2, debug1,
                 #   info, notice, warning, error, panic(off)

#debug_print_parse = false
#debug_print_rewritten = false
#debug_print_plan = false
#debug_pretty_print = false

#explain_pretty_print = true

# requires USE_ASSERT_CHECKING
#debug_assertions = true


#
#    Syslog
#
#syslog = 0            # range 0-2
#syslog_facility = 'LOCAL0'
#syslog_ident = 'postgres'


#
#    Statistics
#
#show_parser_stats = false
#show_planner_stats = false
#show_executor_stats = false
#show_statement_stats = false

# requires BTREE_BUILD_STATS
#show_btree_build_stats = false


#
#    Access statistics collection
#
#stats_start_collector = true
#stats_reset_on_server_start = true
#stats_command_string = false
#stats_row_level = false
#stats_block_level = false


#
#    Lock Tracing
#
#trace_notify = false

# requires LOCK_DEBUG
#trace_locks = false
#trace_userlocks = false
#trace_lwlocks = false
#debug_deadlocks = false
#trace_lock_oidmin = 16384
#trace_lock_table = 0


#
#    Misc
#
#autocommit = true
#dynamic_library_path = '$libdir'
#search_path = '$user,public'
#datestyle = 'iso, us'
#timezone = unknown        # actually, defaults to TZ environment setting
#australian_timezones = false
#client_encoding = sql_ascii    # actually, defaults to database encoding
#authentication_timeout = 60    # 1-600, in seconds
#deadlock_timeout = 1000    # in milliseconds
#default_transaction_isolation = 'read committed'
#max_expr_depth = 10000        # min 10
#max_files_per_process = 1000    # min 25
#password_encryption = true
#sql_inheritance = true
#transform_null_equals = false
#statement_timeout = 0        # 0 is disabled, in milliseconds
#db_user_namespace = false



#
#    Locale settings
#
# (initialized by initdb -- may be changed)
LC_MESSAGES = 'en_US.iso885915'
LC_MONETARY = 'en_US.iso885915'
LC_NUMERIC = 'en_US.iso885915'
LC_TIME = 'en_US.iso885915'