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View Full Version : Dedicated server optimization request


lifanovsky
Sat 23rd Jun '07, 4:33pm
Hi.

Right now I am experiencing problems with my server. From my point of view the ammount of users is not so high in the terms of the hardware that I run. Though the apache often gets restarted and sometimes even mysqld gets offline. Please recommend me something for my forum to become more stable. Thank you very much in advance!

1. Dedicated server. I host a few another sites on it but they don't really generate any serious pressure of the hardware.

2. DualXeon 3.0 GHz
4GB RAM
73GB*2 SCSI
FreeBSD 6.2-RELEASE-p3 #0
Apache v1.3.37
PHP 5.2.1
MySQL 5.1.16-beta-log

3. vBulletin 3.6.7 PL1

4. No InnoDB

5. No sure

6. 382 online (max - 500), 310,000 posts, 13,000 registered users

7.auto_increment_increment 1
auto_increment_offset 1
automatic_sp_privileges ON
back_log 50
basedir /usr/local/
binlog_cache_size 32768
binlog_format MIXED
bulk_insert_buffer_size 8388608
character_set_client cp1251
character_set_connection cp1251
character_set_database cp1251
character_set_filesystem binary
character_set_results cp1251
character_set_server cp1251
character_set_system utf8
character_sets_dir /usr/local/share/mysql/charsets/
collation_connection cp1251_general_ci
collation_database cp1251_general_ci
collation_server cp1251_general_ci
completion_type 0
concurrent_insert 1
connect_timeout 300
datadir /var/db/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 ON
event_scheduler 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)
general_log OFF
general_log_file /var/db/mysql/main.forumklassika.ru.log
group_concat_max_len 1024
have_compress YES
have_crypt YES
have_csv YES
have_dynamic_loading YES
have_geometry YES
have_innodb DISABLED
have_ndbcluster NO
have_openssl NO
have_partitioning YES
have_query_cache YES
have_rtree_keys YES
have_symlink YES
init_connect SET NAMES cp1251
init_file
init_slave
innodb_additional_mem_pool_size 1048576
innodb_autoextend_increment 8
innodb_buffer_pool_size 8388608
innodb_checksums ON
innodb_commit_concurrency 0
innodb_concurrency_tickets 500
innodb_data_file_path
innodb_data_home_dir
innodb_doublewrite ON
innodb_fast_shutdown 1
innodb_file_io_threads 4
innodb_file_per_table OFF
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_rollback_on_timeout OFF
innodb_support_xa ON
innodb_sync_spin_loops 20
innodb_table_locks ON
innodb_thread_concurrency 8
innodb_thread_sleep_delay 10000
innodb_flush_log_at_trx_commit 1
interactive_timeout 28800
join_buffer_size 8384512
key_buffer_size 536870912
key_cache_age_threshold 300
key_cache_block_size 1024
key_cache_division_limit 80
language /usr/local/share/mysql/english/
large_files_support ON
large_page_size 0
large_pages OFF
lc_time_names en_US
license GPL
local_infile ON
locked_in_memory OFF
log OFF
log_bin OFF
log_bin_trust_function_creators OFF
log_error /var/db/mysql/main.forumklassika.ru.err
log_output FILE
log_queries_not_using_indexes OFF
log_slave_updates OFF
log_slow_queries ON
log_warnings 0
long_query_time 10
low_priority_updates OFF
lower_case_file_system OFF
lower_case_table_names 0
max_allowed_packet 4193280
max_binlog_cache_size 18446744073709551615
max_binlog_size 1073741824
max_connect_errors 2000000
max_connections 512
max_delayed_threads 0
max_error_count 64
max_heap_table_size 16777216
max_insert_delayed_threads 0
max_join_size 18446744073709551615
max_length_for_sort_data 1024
max_prepared_stmt_count 16382
max_relay_log_size 0
max_seeks_for_key 100
max_sort_length 1024
max_sp_recursion_depth 0
max_tmp_tables 32
max_user_connections 0
max_write_lock_count 18446744073709551615
multi_range_count 256
myisam_data_pointer_size 6
myisam_max_sort_file_size 9223372036854775807
myisam_recover_options BACKUP,FORCE
myisam_repair_threads 1
myisam_sort_buffer_size 67108864
myisam_stats_method nulls_unequal
myisam_use_mmap OFF
ndb_autoincrement_prefetch_sz 0
ndb_cache_check_time 0
ndb_extra_logging 0
ndb_force_send OFF
ndb_index_stat_cache_entries 0
ndb_index_stat_enable OFF
ndb_index_stat_update_freq 0
ndb_use_copying_alter_table OFF
ndb_use_exact_count OFF
ndb_use_transactions OFF
net_buffer_length 65536
net_read_timeout 30
net_retry_count 1000000
net_write_timeout 60
new OFF
old_alter_table OFF
old_passwords OFF
open_files_limit 32768
optimizer_prune_level 1
optimizer_search_depth 62
pid_file /var/db/mysql/main.forumklassika.ru.pid
plugin_dir /usr/local/lib/mysql
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 33554432
query_cache_type ON
query_cache_wlock_invalidate OFF
query_prealloc_size 8192
range_alloc_block_size 2048
read_buffer_size 16773120
read_only OFF
read_rnd_buffer_size 4190208
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/tmp/
slave_net_timeout 3600
slave_skip_errors OFF
slave_transaction_retries 10
slow_launch_time 2
slow_query_log ON
slow_query_log_file /var/db/mysql/slow.log
socket /usr/local/jwebhost/httphost/tmp/mysql.sock
sort_buffer_size 33554424
sql_big_selects ON
sql_mode
sql_notes ON
sql_warnings OFF
ssl_ca
ssl_capath
ssl_cert
ssl_cipher
ssl_key
storage_engine MyISAM
sync_binlog 0
sync_frm ON
system_time_zone MSD
table_definition_cache 128
table_lock_wait_timeout 50
table_open_cache 1024
table_type MyISAM
thread_cache_size 32
thread_stack 262144
time_format %H:%i:%s
time_zone SYSTEM
timed_mutexes OFF
tmp_table_size 16777216
tmpdir /var/tmp/
transaction_alloc_block_size 8192
transaction_prealloc_size 4096
tx_isolation REPEATABLE-READ
updatable_views_with_limit YES
version 5.1.16-beta-log
version_comment FreeBSD port: mysql-server-5.1.16
version_compile_machine amd64
version_compile_os portbld-freebsd6.2
wait_timeout 3008. Aborted_clients 186
Aborted_connects 362
Binlog_cache_disk_use 0
Binlog_cache_use 0
Bytes_received 153464
Bytes_sent 10752614
Com_admin_commands 34
Com_alter_db 0
Com_alter_event 0
Com_alter_table 0
Com_analyze 0
Com_backup_table 0
Com_begin 0
Com_change_db 35
Com_change_master 0
Com_check 0
Com_checksum 0
Com_commit 0
Com_create_db 0
Com_create_event 0
Com_create_function 0
Com_create_index 0
Com_create_table 0
Com_create_user 0
Com_dealloc_sql 0
Com_delete 0
Com_delete_multi 0
Com_do 0
Com_drop_db 0
Com_drop_event 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 20
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_preload_keys 0
Com_prepare_sql 0
Com_purge 0
Com_purge_before_date 0
Com_rename_table 0
Com_repair 0
Com_replace 8
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 173
Com_set_option 1
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_event 0
Com_show_create_table 0
Com_show_databases 0
Com_show_engine_logs 0
Com_show_engine_mutex 0
Com_show_engine_status 0
Com_show_errors 0
Com_show_events 0
Com_show_fields 0
Com_show_grants 0
Com_show_keys 0
Com_show_master_status 0
Com_show_new_master 0
Com_show_open_tables 0
Com_show_plugins 0
Com_show_privileges 0
Com_show_processlist 0
Com_show_slave_hosts 0
Com_show_slave_status 0
Com_show_status 1
Com_show_storage_engines 0
Com_show_tables 0
Com_show_triggers 0
Com_show_variables 0
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 38
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 92553
Created_tmp_disk_tables 0
Created_tmp_files 351
Created_tmp_tables 0
Delayed_errors 0
Delayed_insert_threads 0
Delayed_writes 0
Flush_commands 1
Handler_commit 0
Handler_delete 0
Handler_discover 0
Handler_prepare 0
Handler_read_first 3
Handler_read_key 6596
Handler_read_next 6251
Handler_read_prev 571
Handler_read_rnd 2516
Handler_read_rnd_next 61053
Handler_rollback 0
Handler_savepoint 0
Handler_savepoint_rollback 0
Handler_update 44
Handler_write 28
Innodb_buffer_pool_pages_data 0
Innodb_buffer_pool_pages_dirty 0
Innodb_buffer_pool_pages_flushed 0
Innodb_buffer_pool_pages_free 0
Innodb_buffer_pool_pages_latched 0
Innodb_buffer_pool_pages_misc 0
Innodb_buffer_pool_pages_total 0
Innodb_buffer_pool_read_ahead_rnd 0
Innodb_buffer_pool_read_ahead_seq 0
Innodb_buffer_pool_read_requests 0
Innodb_buffer_pool_reads 0
Innodb_buffer_pool_wait_free 0
Innodb_buffer_pool_write_requests 0
Innodb_data_fsyncs 0
Innodb_data_pending_fsyncs 0
Innodb_data_pending_reads 0
Innodb_data_pending_writes 0
Innodb_data_read 0
Innodb_data_reads 0
Innodb_data_writes 0
Innodb_data_written 0
Innodb_dblwr_pages_written 0
Innodb_dblwr_writes 0
Innodb_log_waits 0
Innodb_log_write_requests 0
Innodb_log_writes 0
Innodb_os_log_fsyncs 0
Innodb_os_log_pending_fsyncs 0
Innodb_os_log_pending_writes 0
Innodb_os_log_written 0
Innodb_page_size 0
Innodb_pages_created 0
Innodb_pages_read 0
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 402689
Key_blocks_used 25995
Key_read_requests 27088997
Key_reads 26205
Key_write_requests 114068
Key_writes 100076
Last_query_cost 0.000000
Max_used_connections 317
Not_flushed_delayed_rows 0
Open_files 920
Open_streams 0
Open_table_definitions 200
Open_tables 815
Opened_tables 0
Prepared_stmt_count 0
Qcache_free_blocks 1610
Qcache_free_memory 18600672
Qcache_hits 1012091
Qcache_inserts 177771
Qcache_lowmem_prunes 0
Qcache_not_cached 10489
Qcache_queries_in_cache 4134
Qcache_total_blocks 10006
Questions 1660210
Rpl_status NULL
Select_full_join 0
Select_full_range_join 0
Select_range 54
Select_range_check 0
Select_scan 27
Slave_open_temp_tables 0
Slave_retried_transactions 0
Slave_running OFF
Slow_launch_threads 0
Slow_queries 0
Sort_merge_passes 0
Sort_range 50
Sort_rows 4440
Sort_scan 7
Table_locks_immediate 586579
Table_locks_waited 13735
Tc_log_max_pages_used 0
Tc_log_page_size 0
Tc_log_page_waits 0
Threads_cached 28
Threads_connected 55
Threads_created 2067
Threads_running 11
Uptime 113099. There are also a few Wordpress installations on my server and few other scripts that utilize php and mysql but they don't generate any serious traffic.

10. Cookie is set to 600. Average concurrent users is around 300 and growing. Max is 469 as of now but I expect there'll be more in the coming months...

11. http://www.forumklassika.ru/phpinfo.php

12. KeepAlive On
MaxKeepAliveRequests 256
KeepAliveTimeout 15
MinSpareServers 8
MaxSpareServers 24
StartServers 20
MaxClients 512

AND Maxrequestsperchild value = 60

13. Yes, access log for forumklassika.ru is found when I tried to search.

14. uname:
FreeBSD web.forumklassika.ru 6.2-RELEASE-p3 FreeBSD 6.2-RELEASE-p3 #0: Mon Apr 9 07:53:45 MSD 2007 toor@lifanovsky2.p8.ru:/usr/obj/usr/src/sys/6015_SMP amd64

ulimit -aH
Command not found

cat /proc/cpuinfo
No such file or directory

lifanovsky
Mon 25th Jun '07, 7:15am
*bump* Thank you very much in advance! :)

eva2000
Mon 25th Jun '07, 7:58am
Try the following in this exact order. You can ignore any of the suggestions that you have already done.

1. Upgrade MySQL server to latest MySQL 5.x server = 5.0.27 or 5.0.41 as your version is old and well beta!
2. Upgrade PHP to 5.2.3 after upgrading mysql
3. Edit /etc/my.cnf and place the following mysql server settings in /etc/my.cnf and restart mysql server afterwards


[mysqld]
back_log = 75
skip-innodb
max_connections = 650
key_buffer = 96M
myisam_sort_buffer_size = 64M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 4M
table_cache = 2000
thread_cache_size = 384
wait_timeout = 35
connect_timeout = 10
tmp_table_size = 256M
max_heap_table_size = 256M
max_allowed_packet = 64M
max_connect_errors = 10
thread_concurrency = 4
concurrent_insert = 2
table_lock_wait_timeout = 35
read_rnd_buffer_size = 1M
bulk_insert_buffer_size = 8M
query_cache_limit = 8M
query_cache_size = 96M
query_cache_type = 1
query_prealloc_size = 131072
query_alloc_block_size = 65536
default-storage-engine = MyISAM

[mysqld_safe]
nice = -5
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 OR try the alternative PHP caching software, Xcache which seems to be a bit faster than APC Cache - http://www.vbulletin.com/forum/showthread.php?t=213267. For either you need to remove Zend Optimizer.

5. 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

6. Edit httpd.conf values to following and restart apache

KeepAlive: On
MaxKeepAliveRequests: 100
KeepAliveTimeout: 1
MinSpareServers: 10
MaxSpareServers: 15
StartServers: 10
MaxClients: 200
MaxRequestsPerChild: 1000

lifanovsky
Tue 26th Jun '07, 5:34pm
Thank you very much, eva, I will follow your advices ASAP!

eva2000
Wed 27th Jun '07, 7:57am
k no probs, let us know how you do :)