Optimize mysql

[mohd rafi]

Hi.. i'm new on mysql.. can someone here please help me how to optimize my mysql server. I'm using DELL 2850 with 3Gb cpu and 2Gb RAM, Redhat Enterprise 3 and MySQL 4.1. Every 30-50 minutes mysql will be busy & very slow.

here is my the top result :
****************************************************
11:01:04 up 2:28, 3 users, load average: 1.13, 1.05, 0.93
77 processes: 75 sleeping, 2 running, 0 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 53.5% 0.9% 1.6% 0.0% 0.0% 0.1% 43.9%
cpu00 60.6% 0.0% 0.0% 0.0% 0.0% 0.0% 39.4%
cpu01 46.4% 1.8% 3.2% 0.0% 0.0% 0.2% 48.4%
Mem: 2061424k av, 486524k used, 1574900k free, 0k shrd, 57108k buff
357732k active, 80908k inactive
Swap: 4192880k av, 0k used, 4192880k free 179056k cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
5862 mysql 16 0 114M 114M 3292 S 49.9 5.7 41:31 1 mysqld
4801 root 14 -1 31180 12M 4404 S < 3.7 0.6 2:33 0 X
4861 root 25 10 13464 13M 9000 R N 1.4 0.6 0:44 0 rhn-applet-gui
5447 root 15 0 8992 8992 7216 S 0.2 0.4 0:25 1 gnome-system-mo
3661 root 15 0 444 444 388 S 0.1 0.0 0:00 1 irqbalance
***********************************************************************

mysqladmin extended status :

+----------------------------+----------+
| Variable_name | Value |
+----------------------------+----------+
| Aborted_clients | 0 |
| Aborted_connects | 8 |
| Binlog_cache_disk_use | 0 |
| Binlog_cache_use | 0 |
| Bytes_received | 7979894 |
| Bytes_sent | 38459723 |
| 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 | 119 |
| 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 | 0 |
| 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 | 16745 |
| 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 | 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 | 64443 |
| Com_set_option | 0 |
| 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 | 9 |
| Com_show_grants | 0 |
| Com_show_innodb_status | 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_privileges | 0 |
| Com_show_processlist | 0 |
| Com_show_slave_hosts | 0 |
| Com_show_slave_status | 0 |
| Com_show_status | 2 |
| Com_show_storage_engines | 0 |
| Com_show_tables | 0 |
| Com_show_variables | 1 |
| Com_show_warnings | 0 |
| Com_slave_start | 0 |
| Com_slave_stop | 0 |
| Com_stmt_prepare | 0 |
| Com_stmt_execute | 0 |
| Com_stmt_send_long_data | 0 |
| Com_stmt_reset | 0 |
| Com_stmt_close | 0 |
| Com_truncate | 0 |
| Com_unlock_tables | 0 |
| Com_update | 41 |
| Com_update_multi | 0 |
| Connections | 202 |
| Created_tmp_disk_tables | 10 |
| Created_tmp_files | 3 |
| Created_tmp_tables | 26 |
| Delayed_errors | 0 |
| Delayed_insert_threads | 0 |
| Delayed_writes | 0 |
| Flush_commands | 1 |
| Handler_commit | 0 |
| Handler_delete | 0 |
| Handler_discover | 0 |
| Handler_read_first | 7872 |
| Handler_read_key | 56404 |
| Handler_read_next | 26792 |
| Handler_read_prev | 0 |
| Handler_read_rnd | 64 |
| Handler_read_rnd_next | 776253 |
| Handler_rollback | 0 |
| Handler_update | 22 |
| Handler_write | 4533409 |
| Key_blocks_not_flushed | 0 |
| Key_blocks_unused | 463543 |
| Key_blocks_used | 380 |
| Key_read_requests | 376566 |
| Key_reads | 395 |
| Key_write_requests | 19512 |
| Key_writes | 18102 |
| Max_used_connections | 77 |
| Not_flushed_delayed_rows | 0 |
| Open_files | 138 |
| Open_streams | 0 |
| Open_tables | 107 |
| Opened_tables | 118 |
| Qcache_free_blocks | 4504 |
| Qcache_free_memory | 14876592 |
| Qcache_hits | 16579 |
| Qcache_inserts | 48502 |
| Qcache_lowmem_prunes | 33464 |
| Qcache_not_cached | 15749 |
| Qcache_queries_in_cache | 14950 |
| Qcache_total_blocks | 34509 |
| Questions | 98057 |
| Rpl_status | NULL |
| Select_full_join | 3 |
| Select_full_range_join | 0 |
| Select_range | 14 |
| Select_range_check | 0 |
| Select_scan | 38 |
| Slave_open_temp_tables | 0 |
| Slave_running | OFF |
| Slave_retried_transactions | 0 |
| Slow_launch_threads | 0 |
| Slow_queries | 0 |
| Sort_merge_passes | 0 |
| Sort_range | 26 |
| Sort_rows | 78 |
| Sort_scan | 14 |
| Table_locks_immediate | 80039 |
| Table_locks_waited | 1008 |
| Threads_cached | 0 |
| Threads_connected | 77 |
| Threads_created | 201 |
| Threads_running | 55 |
| Uptime | 2066 |
+----------------------------+----------+

*******************************************************************

mysqladmin 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 | YES |
| have_bdb | NO |
| have_blackhole_engine | 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_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_table_locks | ON |
| innodb_thread_concurrency | 8 |
| interactive_timeout | 28800 |
| join_buffer_size | 131072 |
| key_buffer_size | 536870912 |
| 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 | OFF |
| log_error | |
| log_slave_updates | OFF |
| log_slow_queries | OFF |
| log_update | 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 | 5241856 |
| max_binlog_cache_size | 4294967295 |
| max_binlog_size | 1073741824 |
| max_connect_errors | 10 |
| max_connections | 600 |
| max_delayed_threads | 20 |
| max_error_count | 64 |
| max_heap_table_size | 16777216 |
| max_insert_delayed_threads | 20 |
| max_join_size | 18446744073709551615 |
| max_length_for_sort_data | 1024 |
| max_relay_log_size | 0 |
| max_seeks_for_key | 4294967295 |
| max_sort_length | 1024 |
| max_tmp_tables | 100 |
| max_user_connections | 300 |
| 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 | 8388608 |
| net_buffer_length | 16384 |
| net_read_timeout | 30 |
| net_retry_count | 10 |
| net_write_timeout | 60 |
| new | OFF |
| old_passwords | OFF |
| open_files_limit | 3010 |
| pid_file | /var/lib/mysql/......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 | 33554432 |
| 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 | 262144 |
| relay_log_purge | ON |
| relay_log_space_limit | 0 |
| rpl_recovery_rank | 0 |
| secure_auth | OFF |
| server_id | 0 |
| skip_external_locking | ON |
| skip_networking | OFF |
| skip_show_database | OFF |
| slave_net_timeout | 3600 |
| slave_transaction_retries | 0 |
| slow_launch_time | 2 |
| socket | /var/lib/mysql/mysql.sock |
| sort_buffer_size | 5242872 |
| sql_mode | |
| storage_engine | MyISAM |
| sql_notes | ON |
| sql_warnings | ON |
| sync_binlog | 0 |
| sync_replication | 0 |
| sync_replication_slave_id | 0 |
| sync_replication_timeout | 0 |
| sync_frm | ON |
| system_time_zone | SGT |
| table_cache | 1024 |
| table_type | MyISAM |
| thread_cache_size | 0 |
| thread_stack | 196608 |
| time_format | %H:%i:%s |
| time_zone | SYSTEM |
| tmp_table_size | 67108864 |
| tmpdir | |
| transaction_alloc_block_size | 8192 |
| transaction_prealloc_size | 4096 |
| tx_isolation | REPEATABLE-READ |
| version | 4.1.13-standard |
| version_comment | MySQL Community Edition - Standard (GPL) |
| version_compile_machine | i686 |
| version_compile_os | pc-linux-gnu |
| wait_timeout | 28800 |
+---------------------------------+------------------------------------------+

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