Re: Performance on SUSE w/ reiserfs

More info:

apps:/home/jbrisbin # free -mo
total used free shared buffers cached
Mem: 8116 5078 3038 0 92 4330
Swap: 1031 0 1031

apps:/home/jbrisbin # cat /proc/meminfo
MemTotal: 8311188 kB
MemFree: 3111668 kB
Buffers: 94604 kB
Cached: 4434764 kB
SwapCached: 0 kB
Active: 4844344 kB
Inactive: 279556 kB
HighTotal: 7469996 kB
HighFree: 2430976 kB
LowTotal: 841192 kB
LowFree: 680692 kB
SwapTotal: 1056124 kB
SwapFree: 1056124 kB
Dirty: 436 kB
Writeback: 0 kB
Mapped: 581924 kB
Slab: 48264 kB
Committed_AS: 651128 kB
PageTables: 4020 kB
VmallocTotal: 112632 kB
VmallocUsed: 13104 kB
VmallocChunk: 97284 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 2048 kB

apps:/home/jbrisbin # cat /proc/slabinfo
slabinfo - version: 2.0
...
reiser_inode_cache 28121 28140 512 7 1 : tunables
...
radix_tree_node 28092 28154 276 14 1 : tunables
...
inode_cache 1502 1520 384 10 1 : tunables
dentry_cache 40763 40794 152 26 1 : tunables
...
buffer_head 83929 94643 52 71 1 : tunables

Claus Guttesen wrote:

> You may want to submit your postgresql.conf. Upgrading to the latest
> stable version may also help, although my experience is related to
> FreeBSD and postgresql 7.4.8.

# -----------------------------
# 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.
#
# Please note that re-commenting a setting is NOT sufficient to revert it
# to the default value, unless you restart the postmaster.
#
# 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". Some settings, such as listen_address, require
# a postmaster shutdown and restart to take effect.

#---------------------------------------------------------------------------
# FILE LOCATIONS
#---------------------------------------------------------------------------

# The default values of these variables are driven from the -D command line
# switch or PGDATA environment variable, represented here as ConfigDir.
# data_directory = 'ConfigDir' # use data in another directory
# hba_file = 'ConfigDir/pg_hba.conf' # the host-based authentication file
# ident_file = 'ConfigDir/pg_ident.conf' # the IDENT configuration file

# If external_pid_file is not explicitly set, no extra pid file is written.
# external_pid_file = '(none)' # write an extra pid file

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

# - Connection Settings -

listen_addresses = '*' # what IP interface(s) to listen on;
# defaults to localhost, '*' = any
#port = 5432
max_connections = 100
# note: increasing max_connections costs about 500 bytes of shared
# memory per connection slot, in addition to costs from
shared_buffers
# and max_locks_per_transaction.
#superuser_reserved_connections = 2
#unix_socket_directory = ''
#unix_socket_group = ''
#unix_socket_permissions = 0777 # octal
#rendezvous_name = '' # defaults to the computer name

# - Security & Authentication -

#authentication_timeout = 60 # 1-600, in seconds
#ssl = false
#password_encryption = true
#krb_server_keyfile = ''
#db_user_namespace = false

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

# - Memory -

shared_buffers = 1000 # min 16, at least max_connections*2,
8KB each
#work_mem = 1024 # min 64, size in KB
#maintenance_work_mem = 16384 # min 1024, size in KB
#max_stack_depth = 2048 # min 100, 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 = ''

# - 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 # 0-10000 credits

# - Background writer -

#bgwriter_delay = 200 # 10-10000 milliseconds between rounds
#bgwriter_percent = 1 # 0-100% of dirty buffers in each round
#bgwriter_maxpages = 100 # 0-1000 buffers max per round

#---------------------------------------------------------------------------
# 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 = 8 # min 4, 8KB each
#commit_delay = 0 # range 0-100000, in microseconds
#commit_siblings = 5 # range 1-1000

# - Checkpoints -

#checkpoint_segments = 3 # in logfile segments, min 1, 16MB each
#checkpoint_timeout = 300 # range 30-3600, in seconds
#checkpoint_warning = 30 # 0 is off, in seconds

# - Archiving -

#archive_command = '' # command to use to archive a logfile
segment

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

# - Planner Method Configuration -

#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 = 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)

# - Genetic Query Optimizer -

#geqo = true
#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
#from_collapse_limit = 8
#join_collapse_limit = 8 # 1 disables collapsing of explicit JOINs

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

# - Where to Log -

log_destination = 'syslog' # Valid values are combinations of stderr,
# syslog and eventlog, depending on
# platform.

# This is relevant when logging to stderr:
redirect_stderr = true # Enable capturing of stderr into log files.
# These are only relevant if redirect_stderr is true:
log_directory = 'pg_log' # Directory where log files are written.
# May be specified absolute or relative to
PGDATA
log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' # Log file name pattern.
# May include strftime() escapes
#log_truncate_on_rotation = false # If true, any 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 false, meaning append to existing
# files in all cases.
#log_rotation_age = 1440 # Automatic rotation of logfiles will happen
after
# so many minutes. 0 to disable.
#log_rotation_size = 10240 # Automatic rotation of logfiles will happen
after
# so many kilobytes of log output. 0 to
disable.

# These are relevant when logging to 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, notice, warning, error

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

#log_min_duration_statement = -1 # -1 is disabled, in milliseconds.

#silent_mode = false # DO NOT USE without syslog or
redirect_stderr

# - What to Log -

#debug_print_parse = false
#debug_print_rewritten = false
#debug_print_plan = false
#debug_pretty_print = false
#log_connections = false
#log_disconnections = false
#log_duration = false
#log_line_prefix = '' # e.g. '<%u%%%d> '
# %u=user name %d=database name
# %r=remote host and port
# %p=PID %t=timestamp %i=command tag
# %c=session id %l=session line number
# %s=session start timestamp
%x=transaction id
# %q=stop here in non-session processes
# %%='%'
#log_statement = 'none' # none, mod, ddl, all
log_hostname = true

#---------------------------------------------------------------------------
# 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 = true
#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
#default_tablespace = '' # a tablespace name, or '' for default
#check_function_bodies = true
#default_transaction_isolation = 'read committed'
#default_transaction_read_only = false
#statement_timeout = 0 # 0 is disabled, in milliseconds

# - Locale and Formatting -

#datestyle = 'iso, mdy'
#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 might 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'

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

#deadlock_timeout = 1000 # in milliseconds
#max_locks_per_transaction = 64 # min 10, ~200*max_connections bytes each

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

# - Previous Postgres Versions -

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

# - Other Platforms & Clients -

#transform_null_equals = false

--

Jon Brisbin
Webmaster
NPC International, Inc.