server optimization request (thanks)
March 10th, 2010 | Posted by rose under enart.qthx.com with2. p4 2.0
SATA 2x200gb
apache2
php5
mysql5.0.18
suse 10.1
4. yast - install
5.
top - 00:58:05 up 3:48, 4 users, load average: 1.83, 1.70, 1.56
Tasks: 95 total, 1 running, 94 sleeping, 0 stopped, 0 zombie
Cpu(s): 36.4% us, 2.5% sy, 0.0% ni, 55.0% id, 5.7% wa, 0.1% hi, 0.3% si
Mem: 775732k total, 697376k used, 78356k free, 133148k buffers
Swap: 1028120k total, 552k used, 1027568k free, 223976k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
906 wwwrun 16 0 63564 16m 3468 S 19.6 2.1 0:00.76 httpd2-prefork
32649 mysql 15 0 126m 21m 4324 S 16.0 2.9 0:07.70 mysqld
424 wwwrun 15 0 65616 18m 3604 S 8.9 2.4 0:06.87 httpd2-prefork
595 wwwrun 15 0 65880 18m 3552 S 3.6 2.4 0:06.02 httpd2-prefork
1 root 16 0 720 172 132 S 0.0 0.0 0:01.04 init
2 root 34 19 0 0 0 S 0.0 0.0 0:00.01 ksoftirqd/0
3 root 10 -5 0 0 0 S 0.0 0.0 0:00.06 events/0
4 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 khelper
5 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kthread
7 root 10 -5 0 0 0 S 0.0 0.0 0:00.14 kblockd/0
8 root 20 -5 0 0 0 S 0.0 0.0 0:00.00 kacpid
119 root 16 -5 0 0 0 S 0.0 0.0 0:00.00 aio/0
118 root 15 0 0 0 0 S 0.0 0.0 0:04.22 kswapd0
325 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/0
326 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kseriod
366 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 kpsmoused
766 root 10 -5 0 0 0 S 0.0 0.0 0:00.97 reiserfs/0
823 root 13 -4 1832 536 344 S 0.0 0.1 0:00.57 udevd
1371 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 khubd
1479 root 20 0 0 0 0 S 0.0 0.0 0:00.00 shpchpd_event
1984 messageb 17 0 3420 900 728 S 0.0 0.1 0:00.34 dbus-daemon
1998 root 16 0 1520 500 428 S 0.0 0.1 0:00.00 acpid
1999 root 15 0 1800 640 524 S 0.0 0.1 0:00.00 resmgrd
2020 root 16 0 4304 2668 1224 S 0.0 0.3 0:00.94 hald
2093 root 18 0 1820 608 524 S 0.0 0.1 0:00.00 hald-addon-acpi
2307 root 16 0 1816 740 648 S 0.0 0.1 0:00.19 hald-addon-stor
2330 root 16 0 1656 516 324 S 0.0 0.1 0:00.00 klogd
2335 root 15 0 1896 760 576 S 0.0 0.1 0:00.26 syslog-ng
2344 nobody 19 0 1556 376 304 S 0.0 0.0 0:00.00 portmap
2414 root 16 0 103m 1048 780 S 0.0 0.1 0:00.25 nscd
2602 root 16 0 4260 1632 1312 S 0.0 0.2 0:00.03 powersaved
2747 root 17 0 4956 1088 876 S 0.0 0.1 0:00.25 sshd
2850 root 16 0 5416 1744 1412 S 0.0 0.2 0:00.22 master
2871 root 16 0 1820 524 436 S 0.0 0.1 0:00.00 cron
2902 root 18 0 1960 664 580 S 0.0 0.1 0:00.10 mingetty
2903 root 18 0 1960 636 560 S 0.0 0.1 0:00.00 mingetty
2904 root 18 0 1956 640 560 S 0.0 0.1 0:00.00 mingetty
2905 root 18 0 1960 636 560 S 0.0 0.1 0:00.00 mingetty
2906 root 18 0 1960 640 560 S 0.0 0.1 0:00.00 mingetty
2907 root 18 0 1960 640 560 S 0.0 0.1 0:00.00 mingetty
2963 root 15 0 8504 2376 1904 S 0.0 0.3 0:00.37 sshd
6. MYSQL
# 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 = 32M
max_allowed_packet = 1M
table_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 1M
read_rnd_buffer_size = 1M
myisam_sort_buffer_size = 8M
# 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=mysql-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=
# MASTER_USER=
#
# where you replace
#
#
# 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 =
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user =
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password =
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port =
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-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 = 4M
#bdb_max_lock = 10000
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql/
#innodb_data_file_path = ibdata1:10M: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 = 16M
#innodb_additional_mem_pool_size = 2M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
# The safe_mysqld script
[safe_mysqld]
err-log=/var/lib/mysql/mysqld.log
[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 = 64M
sort_buffer_size = 64M
read_buffer = 16M
write_buffer = 16M
[myisamchk]
key_buffer = 64M
sort_buffer_size = 64M
read_buffer = 16M
write_buffer = 16M
[mysqlhotcopy]
interactive-timeout
7. mysql stat
+---------------------------------+----------------------------+
Variable_name Value
+---------------------------------+----------------------------+
auto_increment_increment 1
auto_increment_offset 1
automatic_sp_privileges ON
back_log 50
basedir /usr/
binlog_cache_size 32768
bulk_insert_buffer_size 8388608
character_set_client latin1
character_set_connection latin1
character_set_database latin1
character_set_results latin1
character_set_server latin1
character_set_system utf8
character_sets_dir /usr/share/mysql/charsets/
collation_connection latin1_swedish_ci
collation_database latin1_swedish_ci
collation_server latin1_swedish_ci
completion_type 0
concurrent_insert 1
connect_timeout 5
datadir /var/lib/mysql/
date_format %Y-%m-%d
datetime_format %Y-%m-%d %H:%i:%s
default_week_format 0
delay_key_write ON
delayed_insert_limit 100
delayed_insert_timeout 300
delayed_queue_size 1000
div_precision_increment 4
engine_condition_pushdown OFF
expire_logs_days 0
flush OFF
flush_time 0
ft_boolean_syntax + -><()~*:""&
ft_max_word_len 84
ft_min_word_len 4
ft_query_expansion_limit 20
ft_stopword_file (built-in)
group_concat_max_len 1024
have_archive NO
have_bdb NO
have_blackhole_engine NO
have_compress YES
have_crypt YES
have_csv NO
have_example_engine NO
have_federated_engine NO
have_geometry YES
have_innodb YES
have_isam NO
have_ndbcluster NO
have_openssl NO
have_query_cache YES
have_raid NO
have_rtree_keys YES
have_symlink YES
init_connect
init_file
init_slave
innodb_additional_mem_pool_size 1048576
innodb_autoextend_increment 8
innodb_buffer_pool_awe_mem_mb 0
innodb_buffer_pool_size 8388608
innodb_checksums ON
innodb_commit_concurrency 0
innodb_concurrency_tickets 500
innodb_data_file_path ibdata1:10M:autoextend
innodb_data_home_dir
innodb_doublewrite ON
innodb_fast_shutdown 1
innodb_file_io_threads 4
innodb_file_per_table OFF
innodb_flush_log_at_trx_commit 1
innodb_flush_method
innodb_force_recovery 0
innodb_lock_wait_timeout 50
innodb_locks_unsafe_for_binlog OFF
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_max_dirty_pages_pct 90
innodb_max_purge_lag 0
innodb_mirrored_log_groups 1
innodb_open_files 300
innodb_support_xa ON
innodb_sync_spin_loops 20
innodb_table_locks ON
innodb_thread_concurrency 20
innodb_thread_sleep_delay 10000
interactive_timeout 28800
join_buffer_size 131072
key_buffer_size 33554432
key_cache_age_threshold 300
key_cache_block_size 1024
key_cache_division_limit 100
language /usr/share/mysql/english/
large_files_support ON
large_page_size 0
large_pages OFF
license GPL
local_infile ON
locked_in_memory OFF
log OFF
log_bin OFF
log_bin_trust_function_creators OFF
log_error
log_slave_updates OFF
log_slow_queries OFF
log_warnings 1
long_query_time 10
low_priority_updates OFF
lower_case_file_system OFF
lower_case_table_names 0
max_allowed_packet 1047552
max_binlog_cache_size 4294967295
max_binlog_size 1073741824
max_connect_errors 10
max_connections 100
max_delayed_threads 20
max_error_count 64
max_heap_table_size 16777216
max_insert_delayed_threads 20
max_join_size 4294967295
max_length_for_sort_data 1024
max_relay_log_size 0
max_seeks_for_key 4294967295
max_sort_length 1024
max_sp_recursion_depth 0
max_tmp_tables 32
max_user_connections 0
max_write_lock_count 4294967295
multi_range_count 256
myisam_data_pointer_size 6
myisam_max_sort_file_size 2147483647
myisam_recover_options OFF
myisam_repair_threads 1
myisam_sort_buffer_size 8388608
myisam_stats_method nulls_unequal
net_buffer_length 8192
net_read_timeout 30
net_retry_count 10
net_write_timeout 60
new OFF
old_passwords OFF
open_files_limit 1024
optimizer_prune_level 1
optimizer_search_depth 62
pid_file /var/lib/mysql/mysqld.pid
port 3306
preload_buffer_size 32768
protocol_version 10
query_alloc_block_size 8192
query_cache_limit 1048576
query_cache_min_res_unit 4096
query_cache_size 0
query_cache_type ON
query_cache_wlock_invalidate OFF
query_prealloc_size 8192
range_alloc_block_size 2048
read_buffer_size 1044480
read_only OFF
read_rnd_buffer_size 1044480
relay_log_purge ON
relay_log_space_limit 0
rpl_recovery_rank 0
secure_auth OFF
server_id 1
skip_external_locking ON
skip_networking OFF
skip_show_database OFF
slave_compressed_protocol OFF
slave_load_tmpdir /var/lib/mysql/tmp/
slave_net_timeout 3600
slave_skip_errors OFF
slave_transaction_retries 10
slow_launch_time 2
socket /var/lib/mysql/mysql.sock
sort_buffer_size 524280
sql_mode
sql_notes ON
sql_warnings ON
storage_engine MyISAM
sync_binlog 0
sync_frm ON
sync_replication 0
sync_replication_slave_id 0
sync_replication_timeout 10
system_time_zone CET
table_cache 64
table_lock_wait_timeout 50
table_type MyISAM
thread_cache_size 0
thread_stack 196608
time_format %H:%i:%s
time_zone SYSTEM
timed_mutexes OFF
tmp_table_size 33554432
tmpdir
transaction_alloc_block_size 8192
transaction_prealloc_size 4096
tx_isolation REPEATABLE-READ
updatable_views_with_limit YES
version 5.0.18
version_comment SUSE MySQL RPM
version_compile_machine i686
version_compile_os suse-linux
wait_timeout 28800
+---------------------------------+----------------------------+
+-----------------------------------+-----------+
Variable_name Value
+-----------------------------------+-----------+
Aborted_clients 0
Aborted_connects 0
Binlog_cache_disk_use 0
Binlog_cache_use 0
Bytes_received 2061580
Bytes_sent 134687042
Com_admin_commands 0
Com_alter_db 0
Com_alter_table 0
Com_analyze 0
Com_backup_table 0
Com_begin 0
Com_change_db 1175
Com_change_master 0
Com_check 0
Com_checksum 0
Com_commit 0
Com_create_db 0
Com_create_function 0
Com_create_index 0
Com_create_table 0
Com_dealloc_sql 0
Com_delete 78
Com_delete_multi 0
Com_do 0
Com_drop_db 0
Com_drop_function 0
Com_drop_index 0
Com_drop_table 0
Com_drop_user 0
Com_execute_sql 0
Com_flush 0
Com_grant 0
Com_ha_close 0
Com_ha_open 0
Com_ha_read 0
Com_help 0
Com_insert 228
Com_insert_select 3
Com_kill 0
Com_load 0
Com_load_master_data 0
Com_load_master_table 0
Com_lock_tables 0
Com_optimize 0
Com_preload_keys 0
Com_prepare_sql 0
Com_purge 0
Com_purge_before_date 0
Com_rename_table 0
Com_repair 0
Com_replace 36
Com_replace_select 0
Com_reset 0
Com_restore_table 0
Com_revoke 0
Com_revoke_all 0
Com_rollback 0
Com_savepoint 0
Com_select 5089
Com_set_option 12
Com_show_binlog_events 0
Com_show_binlogs 0
Com_show_charsets 0
Com_show_collations 0
Com_show_column_types 0
Com_show_create_db 0
Com_show_create_table 0
Com_show_databases 0
Com_show_errors 0
Com_show_fields 0
Com_show_grants 0
Com_show_innodb_status 0
Com_show_keys 0
Com_show_logs 0
Com_show_master_status 0
Com_show_ndb_status 0
Com_show_new_master 0
Com_show_open_tables 0
Com_show_privileges 0
Com_show_processlist 0
Com_show_slave_hosts 0
Com_show_slave_status 0
Com_show_status 4
Com_show_storage_engines 0
Com_show_tables 0
Com_show_triggers 0
Com_show_variables 2
Com_show_warnings 0
Com_slave_start 0
Com_slave_stop 0
Com_stmt_close 0
Com_stmt_execute 0
Com_stmt_fetch 0
Com_stmt_prepare 0
Com_stmt_reset 0
Com_stmt_send_long_data 0
Com_truncate 0
Com_unlock_tables 0
Com_update 568
Com_update_multi 0
Com_xa_commit 0
Com_xa_end 0
Com_xa_prepare 0
Com_xa_recover 0
Com_xa_rollback 0
Com_xa_start 0
Compression OFF
Connections 1097
Created_tmp_disk_tables 18
Created_tmp_files 39
Created_tmp_tables 265
Delayed_errors 0
Delayed_insert_threads 0
Delayed_writes 0
Flush_commands 1
Handler_commit 0
Handler_delete 18
Handler_discover 0
Handler_prepare 0
Handler_read_first 300
Handler_read_key 49639
Handler_read_next 224664
Handler_read_prev 147
Handler_read_rnd 2448
Handler_read_rnd_next 113825
Handler_rollback 0
Handler_savepoint 0
Handler_savepoint_rollback 0
Handler_update 931
Handler_write 3316
Innodb_buffer_pool_pages_data 22
Innodb_buffer_pool_pages_dirty 0
Innodb_buffer_pool_pages_flushed 0
Innodb_buffer_pool_pages_free 490
Innodb_buffer_pool_pages_latched 0
Innodb_buffer_pool_pages_misc 0
Innodb_buffer_pool_pages_total 512
Innodb_buffer_pool_read_ahead_rnd 1
Innodb_buffer_pool_read_ahead_seq 0
Innodb_buffer_pool_read_requests 196
Innodb_buffer_pool_reads 15
Innodb_buffer_pool_wait_free 0
Innodb_buffer_pool_write_requests 0
Innodb_data_fsyncs 3
Innodb_data_pending_fsyncs 0
Innodb_data_pending_reads 0
Innodb_data_pending_writes 0
Innodb_data_read 2543616
Innodb_data_reads 28
Innodb_data_writes 3
Innodb_data_written 1536
Innodb_dblwr_pages_written 0
Innodb_dblwr_writes 0
Innodb_log_waits 0
Innodb_log_write_requests 0
Innodb_log_writes 1
Innodb_os_log_fsyncs 3
Innodb_os_log_pending_fsyncs 0
Innodb_os_log_pending_writes 0
Innodb_os_log_written 512
Innodb_page_size 16384
Innodb_pages_created 0
Innodb_pages_read 22
Innodb_pages_written 0
Innodb_row_lock_current_waits 0
Innodb_row_lock_time 0
Innodb_row_lock_time_avg 0
Innodb_row_lock_time_max 0
Innodb_row_lock_waits 0
Innodb_rows_deleted 0
Innodb_rows_inserted 0
Innodb_rows_read 0
Innodb_rows_updated 0
Key_blocks_not_flushed 0
Key_blocks_unused 26638
Key_blocks_used 2357
Key_read_requests 184098
Key_reads 3116
Key_write_requests 1046
Key_writes 624
Last_query_cost 0.000000
Max_used_connections 9
Not_flushed_delayed_rows 0
Open_files 121
Open_streams 0
Open_tables 64
Opened_tables 280
Qcache_free_blocks 0
Qcache_free_memory 0
Qcache_hits 0
Qcache_inserts 0
Qcache_lowmem_prunes 0
Qcache_not_cached 0
Qcache_queries_in_cache 0
Qcache_total_blocks 0
Questions 8287
Rpl_status NULL
Select_full_join 0
Select_full_range_join 0
Select_range 2018
Select_range_check 0
Select_scan 532
Slave_open_temp_tables 0
Slave_retried_transactions 0
Slave_running OFF
Slow_launch_threads 3
Slow_queries 0
Sort_merge_passes 17
Sort_range 981
Sort_rows 135644
Sort_scan 110
Table_locks_immediate 9878
Table_locks_waited 13
Tc_log_max_pages_used 0
Tc_log_page_size 0
Tc_log_page_waits 0
Threads_cached 0
Threads_connected 2
Threads_created 1096
Threads_running 1
Uptime 436
+-----------------------------------+-----------+
Uptime: 436 Threads: 2 Questions: 8288 Slow queries: 0 Opens: 0 Flush tables: 1 Open tables: 64 Queries per second avg: 19.009
mysqladmin Ver 8.41 Distrib 5.0.18, for suse-linux on i686
(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 5.0.18
Protocol version 10
Connection Localhost via UNIX socket
UNIX socket /var/lib/mysql/mysql.sock
Uptime: 7 min 16 sec
Threads: 2 Questions: 8288 Slow queries: 0 Opens: 0 Flush tables: 1 Open tables: 64 Queries per second avg: 19.009
8. only vbulletin
9. 70-80 cookie timeout about 9000
10. http://195.78.32.13/php.php
11.
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15
MinSpareServers 5
MaxSpareServers 10
MaxClients 35
StartServers 20
MinSpareServers 5
12.
polux:/home # uname -a
Linux polux 2.6.16.13-4-default #1 Wed May 3 04:53:23 UTC 2006 i686 i686 i386 GNU/Linux
polux:/home # ulimit -aH
core file size (blocks, -c) unlimited
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
pending signals (-i) 6137
max locked memory (kbytes, -l) 32
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
stack size (kbytes, -s) unlimited
cpu time (seconds, -t) unlimited
max user processes (-u) 6137
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
polux:/home # cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Pentium(R) 4 CPU 2.00GHz
stepping : 9
cpu MHz : 1999.365
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
bogomips : 4002.54
2. Upgrade PHP to 5.1.6 (if you use PHP 5.2.0 and vB 3.5.x, upgrade to vB 3.5.6 for PHP 5.2.0 compatibility)
3. Edit /etc/my.cnf and place the following mysql server settings in /etc/my.cnf and restart mysql server afterwards
[client]
port = 3306
socket = /var/lib/mysql/mysql.sock
[mysqld]
port = 3306
socket = /var/lib/mysql/mysql.sock
back_log = 50
skip-innodb
max_connections = 500
key_buffer =48M
myisam_sort_buffer_size = 64M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 2M
table_cache = 1200
thread_cache_size = 384
wait_timeout = 35
connect_timeout = 10
tmp_table_size = 64M
max_heap_table_size = 64M
max_allowed_packet = 64M
max_connect_errors = 10
read_rnd_buffer_size = 524288
bulk_insert_buffer_size = 8M
query_cache_limit = 3M
query_cache_size = 64M
query_cache_type = 1
query_prealloc_size = 65536
query_alloc_block_size = 131072
default-storage-engine = MyISAM
[mysqld_safe]
open_files_limit = 8192
[mysqldump]
quick
max_allowed_packet = 16M
[myisamchk]
key_buffer = 64M
sort_buffer = 64M
read_buffer = 16M
write_buffer = 16M
4. Install APC Cache lastest version from http://pecl.php.net/package/APC. Read install guide at http://www.vbulletin.com/forum/showthread.php?t=165367
5. Upgrade to vB 3.0.16 http://www.vbulletin.com/forum/showthread.php?t=207858 if you're on vB 3.0.xx or upgrade to vB 3.5.6 http://www.vbulletin.com/forum/showthread.php?t=207859 if you're on vB 3.5.x. Upgrade to vB 3.6.3 http://www.vbulletin.com/forum/showthread.php?t=207860 if you're on vB 3.6.x
6. If you just upgraded to vB 3.5.x/3.6.x try to disable these 4 options:
Admin CP -> vBulletin Options -> Forums Home Page Options -> Display Logged in Users?
Admin CP -> vBulletin Options -> Forum Display Options (forumdisplay) -> Show Users Browsing Forums
Admin CP -> vBulletin Options -> Thread Display Options -> Show Users Browsing Thread
Admin CP -> vBulletin Options -> Message Searching Options -> Automatic Similar Thread search
7. Edit httpd.conf values from
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15
MinSpareServers 5
MaxSpareServers 10
MaxClients 35
StartServers 20
MinSpareServers 5
to
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 5
MinSpareServers 5
MaxSpareServers 15
MaxClients 150
StartServers 10
MinSpareServers 10
restart apache
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