1.
dedicated db server
2. your server specs. For example:
dual opteron 244
4gb
6 18gb 15k scsi drives Raid 10 (all on one partition)
fedora core 2
mysql 4.0.23 (There are problems when I try 4.0.24 or newer
3.
no innodb tables
4.
64bit Mysql RPM
5.
top - 15:23:16 up 332 days, 4:40, 2 users, load average: 4.82, 4.16, 4.31
Tasks: 51 total, 1 running, 50 sleeping, 0 stopped, 0 zombie
Cpu(s): 22.2% us, 47.8% sy, 0.0% ni, 27.8% id, 0.8% wa, 0.2% hi, 1.3% si
Mem: 4066960k total, 3543484k used, 523476k free, 52752k buffers
Swap: 1052216k total, 3672k used, 1048544k free, 2793320k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
20993 howard 16 0 5936 952 5708 R 0.3 0.0 0:00.01 top
1 root 16 0 3472 88 3304 S 0.0 0.0 1:44.34 init
2 root RT 0 0 0 0 S 0.0 0.0 0:00.36 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.65 ksoftirqd/0
4 root RT 0 0 0 0 S 0.0 0.0 0:00.36 migration/1
5 root 34 19 0 0 0 S 0.0 0.0 0:00.40 ksoftirqd/1
6 root 5 -10 0 0 0 S 0.0 0.0 0:30.18 events/0
7 root 5 -10 0 0 0 S 0.0 0.0 0:58.24 events/1
8 root 5 -10 0 0 0 S 0.0 0.0 0:00.06 kblockd/0
9 root 5 -10 0 0 0 S 0.0 0.0 0:00.05 kblockd/1
11 root 9 -10 0 0 0 S 0.0 0.0 0:00.00 khelper
10 root 15 0 0 0 0 S 0.0 0.0 0:00.00 khubd
16 root 14 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0
14 root 15 0 0 0 0 S 0.0 0.0 15:32.73 kswapd1
15 root 15 0 0 0 0 S 0.0 0.0 9:19.10 kswapd0
17 root 14 -10 0 0 0 S 0.0 0.0 0:00.00 aio/1
116 root 25 0 0 0 0 S 0.0 0.0 0:00.41 kseriod
6. your mysql configuration variables located at /etc/my.cnf or c:\my.cnf or my.ini so post the contents inside of my.cnf (minus any passwords of course).
# Example MySQL config file for very large systems.
#
# This is for a large system with memory of 1G-2G where the system runs mainly
# MySQL.
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is /var/lib/mysql) or
# ~/.my.cnf to set user-specific options.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
socket = /var/lib/mysql/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port = 3306
socket = /var/lib/mysql/mysql.sock
skip-locking
key_buffer = 2560M
max_allowed_packet = 1024M
table_cache = 512
sort_buffer_size = 1792M
read_buffer_size = 1792M
myisam_sort_buffer_size = 1024M
thread_cache = 8
query_cache_size = 32M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 8
max_connections = 1200
max_connect_errors = 10000
log_slow_queries=/var/log/slow-queries.log
long_query_time=2
ft_min_word_len=2
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking
# Replication Master Server (default)
# binary logging is required for replication
log-bin
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 1
# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
# where you replace <host>, <user>, <password> by quoted strings and
# <port> by the master's port number (3306 by default).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
# MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
# start replication for the first time (even unsuccessfully, for example
# if you mistyped the password in master-password and the slave fails to
# connect), the slave will create a master.info file, and any later
# change in this file to the variables' values below will be ignored and
# overridden by the content of the master.info file, unless you shutdown
# the slave server, delete master.info and restart the slaver server.
# For that reason, you may want to leave the lines below untouched
# (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id = 2
#
# The replication master for this slave - required
#master-host = <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user = <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password = <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port = <port>
#
# binary logging - not required for slaves, but recommended
#log-bin
# Point the following paths to different dedicated disks
#tmpdir = /tmp/
#log-update = /path-to-dedicated-directory/hostname
# Uncomment the following if you are using BDB tables
#bdb_cache_size = 384M
#bdb_max_lock = 100000
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql/
#innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql/
#innodb_log_arch_dir = /var/lib/mysql/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 384M
#innodb_additional_mem_pool_size = 20M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 100M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[myisamchk]
key_buffer = 2048M
sort_buffer_size = 1024M
read_buffer = 1024M
write_buffer = 1024M
[mysqlhotcopy]
interactive-timeout
7.
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Variable_name | Value |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| back_log | 50 |
| basedir | / |
| binlog_cache_size | 32768 |
| bulk_insert_buffer_size | 8388608 |
| character_set | latin1 |
| character_sets | latin1 big5 czech euc_kr gb2312 gbk latin1_de sjis tis620 ujis dec8 dos german1 hp8 koi8_ru latin2 swe7 usa7 cp1251 danish hebrew win1251 estonia hungarian koi8_ukr win1251ukr greek win1250 croat cp1257 latin5 |
| concurrent_insert | ON |
| connect_timeout | 5 |
| convert_character_set | |
| datadir | /var/lib/mysql/ |
| default_week_format | 0 |
| delay_key_write | ON |
| delayed_insert_limit | 100 |
| delayed_insert_timeout | 300 |
| delayed_queue_size | 1000 |
| flush | OFF |
| flush_time | 0 |
| ft_boolean_syntax | + -><()~*:""&| |
| ft_min_word_len | 2 |
| ft_max_word_len | 254 |
| ft_max_word_len_for_sort | 20 |
| ft_stopword_file | (built-in) |
| have_bdb | NO |
| have_crypt | YES |
| have_innodb | YES |
| have_isam | YES |
| have_raid | NO |
| have_symlink | YES |
| have_openssl | NO |
| have_query_cache | YES |
| init_file | |
| innodb_additional_mem_pool_size | 1048576 |
| innodb_buffer_pool_size | 8388608 |
| innodb_data_file_path | ibdata1:10M:autoextend |
| innodb_data_home_dir | |
| innodb_file_io_threads | 4 |
| innodb_force_recovery | 0 |
| innodb_thread_concurrency | 8 |
| innodb_flush_log_at_trx_commit | 1 |
| innodb_fast_shutdown | ON |
| innodb_flush_method | |
| innodb_lock_wait_timeout | 50 |
| innodb_log_arch_dir | ./ |
| innodb_log_archive | OFF |
| innodb_log_buffer_size | 1048576 |
| innodb_log_file_size | 5242880 |
| innodb_log_files_in_group | 2 |
| innodb_log_group_home_dir | ./ |
| innodb_mirrored_log_groups | 1 |
| innodb_max_dirty_pages_pct | 90 |
| innodb_max_purge_lag | 0 |
| innodb_table_locks | ON |
| interactive_timeout | 28800 |
| join_buffer_size | 131072 |
| key_buffer_size | 2684354560 |
| language | /usr/share/mysql/english/ |
| large_files_support | ON |
| license | GPL |
| local_infile | ON |
| locked_in_memory | OFF |
| log | OFF |
| log_update | OFF |
| log_bin | ON |
| log_slave_updates | OFF |
| log_slow_queries | ON |
| log_warnings | 1 |
| long_query_time | 2 |
| low_priority_updates | OFF |
| lower_case_file_system | OFF |
| lower_case_table_names | 0 |
| max_allowed_packet | 1073740800 |
| max_binlog_cache_size | 4294967295 |
| max_binlog_size | 1073741824 |
| max_connections | 1200 |
| max_connect_errors | 10000 |
| max_delayed_threads | 20 |
| max_insert_delayed_threads | 20 |
| max_heap_table_size | 16777216 |
| max_join_size | 18446744073709551615 |
| max_relay_log_size | 0 |
| max_seeks_for_key | 4294967295 |
| max_sort_length | 1024 |
| max_user_connections | 0 |
| max_tmp_tables | 32 |
| max_write_lock_count | 4294967295 |
| myisam_max_extra_sort_file_size | 268435456 |
| myisam_max_sort_file_size | 9223372036854775807 |
| myisam_repair_threads | 1 |
| myisam_recover_options | OFF |
| myisam_sort_buffer_size | 1073741824 |
| net_buffer_length | 16384 |
| net_read_timeout | 30 |
| net_retry_count | 10 |
| net_write_timeout | 60 |
| new | OFF |
| open_files_limit | 6010 |
| pid_file | /var/lib/mysql/localhost.localdomain.pid |
| log_error | |
| port | 3306 |
| protocol_version | 10 |
| query_alloc_block_size | 8192 |
| query_cache_limit | 1048576 |
| query_cache_size | 33554432 |
| query_cache_type | ON |
| query_prealloc_size | 8192 |
| range_alloc_block_size | 2048 |
| read_buffer_size | 1879044096 |
| read_only | OFF |
| read_rnd_buffer_size | 262144 |
| rpl_recovery_rank | 0 |
| server_id | 1 |
| slave_net_timeout | 3600 |
| skip_external_locking | ON |
| skip_networking | OFF |
| skip_show_database | OFF |
| slow_launch_time | 2 |
| socket | /var/lib/mysql/mysql.sock |
| sort_buffer_size | 1879048184 |
| sql_mode | 0 |
| table_cache | 512 |
| table_type | MYISAM |
| thread_cache_size | 8 |
| thread_stack | 196608 |
| tx_isolation | REPEATABLE-READ |
| timezone | EST |
| tmp_table_size | 33554432 |
| tmpdir | /tmp/ |
| transaction_alloc_block_size | 8192 |
| transaction_prealloc_size | 4096 |
| version | 4.0.23-standard-log |
| version_comment | Official MySQL RPM |
| version_compile_os | unknown-linux |
| wait_timeout | 28800 |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+--------------------------+------------+
| Variable_name | Value |
+--------------------------+------------+
| Aborted_clients | 0 |
| Aborted_connects | 266 |
| Bytes_received | 3196255980 |
| Bytes_sent | 4084235101 |
| Com_admin_commands | 1 |
| Com_alter_table | 0 |
| Com_analyze | 0 |
| Com_backup_table | 0 |
| Com_begin | 0 |
| Com_change_db | 772977 |
| Com_change_master | 0 |
| Com_check | 0 |
| Com_commit | 0 |
| Com_create_db | 0 |
| Com_create_function | 0 |
| Com_create_index | 0 |
| Com_create_table | 0 |
| Com_delete | 12818 |
| Com_delete_multi | 0 |
| Com_drop_db | 0 |
| Com_drop_function | 0 |
| Com_drop_index | 0 |
| Com_drop_table | 0 |
| Com_flush | 0 |
| Com_grant | 0 |
| Com_ha_close | 0 |
| Com_ha_open | 0 |
| Com_ha_read | 0 |
| Com_insert | 392094 |
| Com_insert_select | 0 |
| Com_kill | 0 |
| Com_load | 0 |
| Com_load_master_data | 0 |
| Com_load_master_table | 0 |
| Com_lock_tables | 0 |
| Com_optimize | 0 |
| Com_purge | 0 |
| Com_rename_table | 0 |
| Com_repair | 0 |
| Com_replace | 4085 |
| Com_replace_select | 0 |
| Com_reset | 0 |
| Com_restore_table | 0 |
| Com_revoke | 0 |
| Com_rollback | 0 |
| Com_savepoint | 0 |
| Com_select | 2997358 |
| Com_set_option | 0 |
| Com_show_binlog_events | 0 |
| Com_show_binlogs | 0 |
| Com_show_create | 0 |
| Com_show_databases | 0 |
| Com_show_fields | 9 |
| Com_show_grants | 0 |
| Com_show_keys | 0 |
| Com_show_logs | 0 |
| Com_show_master_status | 0 |
| Com_show_new_master | 0 |
| Com_show_open_tables | 0 |
| Com_show_processlist | 0 |
| Com_show_slave_hosts | 1 |
| Com_show_slave_status | 0 |
| Com_show_status | 1 |
| Com_show_innodb_status | 0 |
| Com_show_tables | 0 |
| Com_show_variables | 2 |
| Com_slave_start | 0 |
| Com_slave_stop | 0 |
| Com_truncate | 0 |
| Com_unlock_tables | 0 |
| Com_update | 979535 |
| Connections | 706736 |
| Created_tmp_disk_tables | 2406 |
| Created_tmp_tables | 30996 |
| Created_tmp_files | 3 |
| Delayed_insert_threads | 0 |
| Delayed_writes | 0 |
| Delayed_errors | 0 |
| Flush_commands | 1 |
| Handler_commit | 0 |
| Handler_delete | 70503 |
| Handler_read_first | 485283 |
| Handler_read_key | 530140077 |
| Handler_read_next | 436182261 |
| Handler_read_prev | 77263405 |
| Handler_read_rnd | 33372311 |
| Handler_read_rnd_next | 2012421374 |
| Handler_rollback | 0 |
| Handler_update | 1808203 |
| Handler_write | 701818 |
| Key_blocks_used | 304253 |
| Key_read_requests | 1668941593 |
| Key_reads | 299272 |
| Key_write_requests | 533850 |
| Key_writes | 558384 |
| Max_used_connections | 350 |
| Not_flushed_key_blocks | 0 |
| Not_flushed_delayed_rows | 0 |
| Open_tables | 512 |
| Open_files | 531 |
| Open_streams | 0 |
| Opened_tables | 3258 |
| Questions | 9449727 |
| Qcache_queries_in_cache | 3679 |
| Qcache_inserts | 2950008 |
| Qcache_hits | 3584145 |
| Qcache_lowmem_prunes | 29244 |
| Qcache_not_cached | 47351 |
| Qcache_free_memory | 19999800 |
| Qcache_free_blocks | 1716 |
| Qcache_total_blocks | 9376 |
| Rpl_status | NULL |
| Select_full_join | 30 |
| Select_full_range_join | 0 |
| Select_range | 674857 |
| Select_range_check | 0 |
| Select_scan | 486421 |
| Slave_open_temp_tables | 0 |
| Slave_running | OFF |
| Slow_launch_threads | 0 |
| Slow_queries | 767 |
| Sort_merge_passes | 0 |
| Sort_range | 949309 |
| Sort_rows | 104735935 |
| Sort_scan | 32224 |
| Table_locks_immediate | 8968354 |
| Table_locks_waited | 391902 |
| Threads_cached | 2 |
| Threads_created | 52194 |
| Threads_connected | 20 |
| Threads_running | 11 |
| Uptime | 57048 |
+--------------------------+------------+
Uptime: 57048 Threads: 20 Questions: 9449732 Slow queries: 767 Opens: 3258 Flush tables: 1 Open tables: 512 Queries per second avg: 165.645
mysqladmin Ver 8.40 Distrib 4.0.21, for pc-linux on i686
Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL license
Server version 4.0.23-standard-log
Protocol version 10
Connection Localhost via UNIX socket
UNIX socket /var/lib/mysql/mysql.sock
Uptime: 15 hours 50 min 48 sec
Threads: 20 Questions: 9449732 Slow queries: 767 Opens: 3258 Flush tables: 1 Open tables: 512 Queries per second avg: 165.645
8. is your vB the only thing on the server? or other scripts & sites which utilise php and mysql?
only thing
9. how many average and max concurrent users on your vB forum ? and what your cookie timeout is ?
average=5000
cookie time out=2700
12. what version of vB are you running ?
3.0.7 (with patches)
I wasn't really asking for a server optimization but if it helps figure out the high systems utilization what the heck :)