Possibly useful information regarding my mysql setup: mysql> show variables; +---------------------------------+----------------------------+ | Variable_name | Value | +---------------------------------+----------------------------+ | back_log | 50 | | basedir | / | | 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 | | concurrent_insert | ON | | 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 | | 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_compress | YES | | have_crypt | YES | | have_csv | NO | | have_example_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_data_file_path | ibdata1:10M:autoextend | | innodb_data_home_dir | | | innodb_fast_shutdown | ON | | innodb_file_io_threads | 4 | | innodb_file_per_table | OFF | | innodb_locks_unsafe_for_binlog | OFF | | innodb_flush_log_at_trx_commit | 1 | | innodb_flush_method | | | innodb_force_recovery | 0 | | 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_max_dirty_pages_pct | 90 | | innodb_table_locks | ON | | innodb_max_purge_lag | 0 | | innodb_mirrored_log_groups | 1 | | innodb_open_files | 300 | | innodb_thread_concurrency | 8 | | interactive_timeout | 28800 | | join_buffer_size | 131072 | | key_buffer_size | 402653184 | | key_cache_age_threshold | 300 | | key_cache_block_size | 1024 | | key_cache_division_limit | 100 | | language | /usr/share/mysql/english/ | | large_files_support | ON | | license | GPL | | local_infile | ON | | locked_in_memory | OFF | | log | OFF | | log_bin | ON | | log_error | | | log_slave_updates | OFF | | log_slow_queries | ON | | log_update | OFF | | log_warnings | 2 | | long_query_time | 2 | | low_priority_updates | OFF | | lower_case_file_system | OFF | | lower_case_table_names | 0 | | max_allowed_packet | 33553408 | | max_binlog_cache_size | 4294967295 | | max_binlog_size | 1073741824 | | max_connect_errors | 10 | | max_connections | 512 | | 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_tmp_tables | 32 | | max_user_connections | 0 | | max_write_lock_count | 4294967295 | | myisam_data_pointer_size | 4 | | myisam_max_extra_sort_file_size | 2147483648 | | myisam_max_sort_file_size | 2147483647 | | myisam_recover_options | OFF | | myisam_repair_threads | 1 | | myisam_sort_buffer_size | 67108864 | | net_buffer_length | 16384 | | net_read_timeout | 30 | | net_retry_count | 10 | | net_write_timeout | 60 | | new | OFF | | old_passwords | OFF | | open_files_limit | 2570 | | pid_file | /var/lib/mysql/cortex.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 | 67108864 | | query_cache_type | ON | | query_cache_wlock_invalidate | OFF | | query_prealloc_size | 8192 | | range_alloc_block_size | 2048 | | read_buffer_size | 2093056 | | read_only | OFF | | read_rnd_buffer_size | 8384512 | | relay_log_purge | ON | | rpl_recovery_rank | 0 | | secure_auth | OFF | | server_id | 1 | | skip_external_locking | ON | | skip_networking | OFF | | skip_show_database | OFF | | slave_net_timeout | 3600 | | slow_launch_time | 2 | | socket | /var/lib/mysql/mysql.sock | | sort_buffer_size | 2097144 | | sql_mode | | | storage_engine | MyISAM | | sync_binlog | 0 | | sync_frm | ON | | system_time_zone | MST | | table_cache | 1024 | | table_type | MyISAM | | thread_cache_size | 8 | | thread_stack | 131072 | | time_format | %H:%i:%s | | time_zone | SYSTEM | | tmp_table_size | 33554432 | | tmpdir | | | transaction_alloc_block_size | 8192 | | transaction_prealloc_size | 4096 | | tx_isolation | REPEATABLE-READ | | version | 4.1.7-standard-log | | version_comment | Official MySQL RPM | | version_compile_machine | i686 | | version_compile_os | pc-linux | | wait_timeout | 28800 | +---------------------------------+----------------------------+ 176 rows in set (0.01 sec)
mysql> show status; +--------------------------+------------+ | Variable_name | Value | +--------------------------+------------+ | Aborted_clients | 608 | | Aborted_connects | 0 | | Binlog_cache_disk_use | 0 | | Binlog_cache_use | 0 | | Bytes_received | 143550320 | | Bytes_sent | 2187388200 | | Com_admin_commands | 5193 | | Com_alter_db | 0 | | Com_alter_table | 0 | | Com_analyze | 0 | | Com_backup_table | 0 | | Com_begin | 0 | | Com_change_db | 5287 | | 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 | 1632 | | Com_dealloc_sql | 0 | | Com_delete | 167796 | | Com_delete_multi | 92 | | 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 | 94450 | | Com_insert_select | 16 | | Com_kill | 0 | | Com_load | 0 | | Com_load_master_data | 0 | | Com_load_master_table | 0 | | Com_lock_tables | 3 | | 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 | 0 | | 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 | 90409 | | Com_set_option | 893 | | 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 | 890 | | Com_show_databases | 0 | | Com_show_errors | 0 | | Com_show_fields | 2742 | | Com_show_grants | 0 | | Com_show_innodb_status | 0 | | Com_show_keys | 0 | | Com_show_logs | 0 | | Com_show_master_status | 27 | | Com_show_new_master | 0 | | Com_show_open_tables | 0 | | Com_show_privileges | 0 | | Com_show_processlist | 27 | | Com_show_slave_hosts | 0 | | Com_show_slave_status | 0 | | Com_show_status | 33 | | Com_show_storage_engines | 0 | | Com_show_tables | 1710 | | Com_show_variables | 17 | | Com_show_warnings | 0 | | Com_slave_start | 0 | | Com_slave_stop | 0 | | Com_truncate | 0 | | Com_unlock_tables | 2 | | Com_update | 21984 | | Com_update_multi | 1 | | Connections | 465 | | Created_tmp_disk_tables | 9580 | | Created_tmp_files | 2857 | | Created_tmp_tables | 14421 | | Delayed_errors | 0 | | Delayed_insert_threads | 0 | | Delayed_writes | 0 | | Flush_commands | 1 | | Handler_commit | 2 | | Handler_delete | 34621 | | Handler_discover | 0 | | Handler_read_first | 21968 | | Handler_read_key | 2262195 | | Handler_read_next | 45830546 | | Handler_read_prev | 0 | | Handler_read_rnd | 40652 | | Handler_read_rnd_next | 191551453 | | Handler_rollback | 380 | | Handler_update | 61977 | | Handler_write | 1162203 | | Key_blocks_not_flushed | 0 | | Key_blocks_unused | 321193 | | Key_blocks_used | 27709 | | Key_read_requests | 12089652 | | Key_reads | 30593 | | Key_write_requests | 926575 | | Key_writes | 817381 | | Max_used_connections | 25 | | Not_flushed_delayed_rows | 0 | | Open_files | 167 | | Open_streams | 0 | | Open_tables | 1024 | | Opened_tables | 1219 | | Qcache_free_blocks | 3349 | | Qcache_free_memory | 40534616 | | Qcache_hits | 687176 | | Qcache_inserts | 83014 | | Qcache_lowmem_prunes | 0 | | Qcache_not_cached | 7452 | | Qcache_queries_in_cache | 15558 | | Qcache_total_blocks | 34795 | | Questions | 1075371 | | Rpl_status | NULL | | Select_full_join | 1121 | | Select_full_range_join | 104 | | Select_range | 2964 | | Select_range_check | 0 | | Select_scan | 15503 | | Slave_open_temp_tables | 0 | | Slave_running | OFF | | Slow_launch_threads | 0 | | Slow_queries | 64 | | Sort_merge_passes | 0 | | Sort_range | 4274 | | Sort_rows | 262906 | | Sort_scan | 9475 | | Table_locks_immediate | 444410 | | Table_locks_waited | 73 | | Threads_cached | 0 | | Threads_connected | 25 | | Threads_created | 27 | | Threads_running | 10 | | Uptime | 4787 | +--------------------------+------------+ 156 rows in set (0.00 sec) #ps -aux root 30641 0.0 0.0 4252 4 pts/1 S 12:34 0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31445 0.0 5.3 537372 109640 pts/1 S 13:02 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31446 0.0 5.3 537372 109640 pts/1 S 13:02 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31447 0.0 5.3 537372 109640 pts/1 S 13:02 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31448 0.0 5.3 537372 109640 pts/1 S 13:02 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31449 6.1 5.3 537372 109640 pts/1 S 13:02 5:05 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31450 0.0 5.3 537372 109640 pts/1 S 13:02 0:02 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31451 0.0 5.3 537372 109640 pts/1 S 13:02 0:01 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31452 0.0 5.3 537372 109640 pts/1 S 13:02 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31453 0.0 5.3 537372 109640 pts/1 S 13:02 0:03 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31454 0.0 5.3 537372 109640 pts/1 S 13:02 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31456 0.0 5.3 537372 109640 pts/1 S 13:02 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31457 0.0 5.3 537372 109640 pts/1 S 13:02 0:01 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31458 0.0 5.3 537372 109640 pts/1 S 13:02 0:01 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31461 0.9 5.3 537372 109640 pts/1 S 13:02 0:48 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31462 1.2 5.3 537372 109640 pts/1 S 13:02 1:02 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31463 0.7 5.3 537372 109640 pts/1 S 13:02 0:39 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31464 0.6 5.3 537372 109640 pts/1 S 13:02 0:30 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31465 1.3 5.3 537372 109640 pts/1 S 13:02 1:07 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31466 0.0 5.3 537372 109640 pts/1 S 13:02 0:02 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31467 1.0 5.3 537372 109640 pts/1 S 13:02 0:51 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31536 0.0 5.3 537372 109640 pts/1 S 13:03 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31537 0.0 5.3 537372 109640 pts/1 S 13:04 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31538 0.0 5.3 537372 109640 pts/1 S 13:04 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31539 0.8 5.3 537372 109640 pts/1 S 13:05 0:39 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31540 0.9 5.3 537372 109640 pts/1 S 13:05 0:44 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31541 2.2 5.3 537372 109640 pts/1 S 13:05 1:48 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31651 1.2 5.3 537372 109640 pts/1 S 13:08 0:55 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31675 1.4 5.3 537372 109640 pts/1 S 13:08 1:06 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 31676 1.2 5.3 537372 109640 pts/1 S 13:08 0:55 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 32040 1.4 5.3 537372 109640 pts/1 S 13:23 0:54 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 32041 1.2 5.3 537372 109640 pts/1 S 13:23 0:46 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 32539 4.7 5.3 537372 109640 pts/1 S 13:42 1:59 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 668 1.5 5.3 537372 109640 pts/1 S 14:05 0:17 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 1132 0.5 5.3 537372 109640 pts/1 S 14:22 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 1133 0.1 5.3 537372 109640 pts/1 S 14:22 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 1134 0.2 5.3 537372 109640 pts/1 S 14:22 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 1135 1.2 5.3 537372 109640 pts/1 S 14:22 0:02 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid mysql 1136 0.6 5.3 537372 109640 pts/1 S 14:22 0:01 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/cortex.pid Should I simply run "export LD_ASSUME_KERNEL=2.4.1" and then "service mysql restart" to get the NPTL threads disabled? ideas? Ryan p.s Thanks Sasha! > Ryan: > > There are a good number of ways to make MySQL cause high swap usage. It > would be difficult to know where to start without seeing your SHOW > STATUS/SHOW VARIABLES and the query log. Also, what happens with the > memory footprint of the mysqld process? > > Before going any further, I would also recommend export > LD_ASSUME_KERNEL=2.4.1 in mysqld_safe to turn off NPTL threads. > > > -- > Sasha Pachev > AskSasha Linux Consulting > http://www.asksasha.com > > > -------------------- > BYU Unix Users Group > http://uug.byu.edu/ > > The opinions expressed in this message are the responsibility of their > author. They are not endorsed by BYU, the BYU CS Department or BYU-UUG. > ___________________________________________________________________ > List Info: http://uug.byu.edu/cgi-bin/mailman/listinfo/uug-list -------------------- BYU Unix Users Group http://uug.byu.edu/ The opinions expressed in this message are the responsibility of their author. They are not endorsed by BYU, the BYU CS Department or BYU-UUG. ___________________________________________________________________ List Info: http://uug.byu.edu/cgi-bin/mailman/listinfo/uug-list
