From: Claudio Nanni Date: March 9 2009 10:20pm Subject: Re: mysql behaviour List-Archive: http://lists.mysql.com/mysql/216648 Message-Id: <49B5963D.2000706@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Still everything is relative, Aborted clients seems high but it could be just a Django problem (does not close correctly connections), can you tail some 100 lines from the mysql error log? Miguel wrote: > On Mon, 2009-03-09 at 22:37 +0100, Miguel wrote: >> as you say, it is not a fact. I m trying to find the problem but I >> have no experiences with ddbb performance. >> >> I have also found file descriptors really big like this one (lsof info): >> >> >>> mysqld 17638 mysql 71u REG 8,4 15925532 83013 /usr/var/lib/mysql/django_session.MYD >>> >>> I dont know if this could be a problem. >>> >> >> Another clue I have is that I have duplicated the framework in my pc >> (in both systems bbdd and framework are in the same machine) and the >> bbdd goes faster that the production one. >> >> maybe, should I restart mysql? >> >> (Thanks Claudio for your help) >> >> >> here are the status results (this one: Aborted_clients doesnt seem >> really nice): >> >> >>> +-----------------------------------+-------------+ >>> | Variable_name | Value | >>> +-----------------------------------+-------------+ >>> | Aborted_clients | 25046 | >>> | Aborted_connects | 44 | >>> | Binlog_cache_disk_use | 0 | >>> | Binlog_cache_use | 1 | >>> | Bytes_received | 122 | >>> | Bytes_sent | 180 | >>> | 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 | 0 | >>> | 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_create_user | 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 | 0 | >>> | 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 | 1 | >>> | 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 | 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 | 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 | 0 | >>> | 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 | 616340 | >>> | Created_tmp_disk_tables | 0 | >>> | Created_tmp_files | 31 | >>> | Created_tmp_tables | 1 | >>> | 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 | 0 | >>> | Handler_read_key | 0 | >>> | Handler_read_next | 0 | >>> | Handler_read_prev | 0 | >>> | Handler_read_rnd | 0 | >>> | Handler_read_rnd_next | 0 | >>> | Handler_rollback | 0 | >>> | Handler_savepoint | 0 | >>> | Handler_savepoint_rollback | 0 | >>> | Handler_update | 0 | >>> | Handler_write | 131 | >>> | Innodb_buffer_pool_pages_data | 19 | >>> | Innodb_buffer_pool_pages_dirty | 0 | >>> | Innodb_buffer_pool_pages_flushed | 1 | >>> | Innodb_buffer_pool_pages_free | 493 | >>> | 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 | 169 | >>> | Innodb_buffer_pool_reads | 12 | >>> | Innodb_buffer_pool_wait_free | 0 | >>> | Innodb_buffer_pool_write_requests | 1 | >>> | Innodb_data_fsyncs | 7 | >>> | Innodb_data_pending_fsyncs | 0 | >>> | Innodb_data_pending_reads | 0 | >>> | Innodb_data_pending_writes | 0 | >>> | Innodb_data_read | 2494464 | >>> | Innodb_data_reads | 25 | >>> | Innodb_data_writes | 7 | >>> | Innodb_data_written | 35328 | >>> | Innodb_dblwr_pages_written | 1 | >>> | Innodb_dblwr_writes | 1 | >>> | Innodb_log_waits | 0 | >>> | Innodb_log_write_requests | 0 | >>> | Innodb_log_writes | 2 | >>> | Innodb_os_log_fsyncs | 5 | >>> | Innodb_os_log_pending_fsyncs | 0 | >>> | Innodb_os_log_pending_writes | 0 | >>> | Innodb_os_log_written | 1024 | >>> | Innodb_page_size | 16384 | >>> | Innodb_pages_created | 0 | >>> | Innodb_pages_read | 19 | >>> | Innodb_pages_written | 1 | >>> | 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 | 9438 | >>> | Key_blocks_used | 14497 | >>> | Key_read_requests | 39761741149 | >>> | Key_reads | 3592665 | >>> | Key_write_requests | 350460068 | >>> | Key_writes | 350307528 | >>> | Last_query_cost | 0.000000 | >>> | Max_used_connections | 30 | >>> | Ndb_cluster_node_id | 0 | >>> | Ndb_config_from_host | | >>> | Ndb_config_from_port | 0 | >>> | Ndb_number_of_data_nodes | 0 | >>> | Not_flushed_delayed_rows | 0 | >>> | Open_files | 129 | >>> | Open_streams | 0 | >>> | Open_tables | 64 | >>> | Opened_tables | 0 | >>> | Prepared_stmt_count | 0 | >>> | Qcache_free_blocks | 1093 | >>> | Qcache_free_memory | 3048576 | >>> | Qcache_hits | 447421329 | >>> | Qcache_inserts | 13377148 | >>> | Qcache_lowmem_prunes | 4819545 | >>> | Qcache_not_cached | 64236 | >>> | Qcache_queries_in_cache | 3617 | >>> | Qcache_total_blocks | 8471 | >>> | Questions | 777237127 | >>> | Rpl_status | NULL | >>> | Select_full_join | 0 | >>> | Select_full_range_join | 0 | >>> | Select_range | 0 | >>> | Select_range_check | 0 | >>> | Select_scan | 1 | >>> | 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 | 0 | >>> | Sort_rows | 0 | >>> | Sort_scan | 0 | >>> | Ssl_accept_renegotiates | 0 | >>> | Ssl_accepts | 0 | >>> | Ssl_callback_cache_hits | 0 | >>> | Ssl_cipher | | >>> | Ssl_cipher_list | | >>> | Ssl_client_connects | 0 | >>> | Ssl_connect_renegotiates | 0 | >>> | Ssl_ctx_verify_depth | 0 | >>> | Ssl_ctx_verify_mode | 0 | >>> | Ssl_default_timeout | 0 | >>> | Ssl_finished_accepts | 0 | >>> | Ssl_finished_connects | 0 | >>> | Ssl_session_cache_hits | 0 | >>> | Ssl_session_cache_misses | 0 | >>> | Ssl_session_cache_mode | NONE | >>> | Ssl_session_cache_overflows | 0 | >>> | Ssl_session_cache_size | 0 | >>> | Ssl_session_cache_timeouts | 0 | >>> | Ssl_sessions_reused | 0 | >>> | Ssl_used_session_cache_entries | 0 | >>> | Ssl_verify_depth | 0 | >>> | Ssl_verify_mode | 0 | >>> | Ssl_version | | >>> | Table_locks_immediate | 175862068 | >>> | Table_locks_waited | 12103 | >>> | Tc_log_max_pages_used | 0 | >>> | Tc_log_page_size | 0 | >>> | Tc_log_page_waits | 0 | >>> | Threads_cached | 5 | >>> | Threads_connected | 5 | >>> | Threads_created | 581 | >>> | Threads_running | 1 | >>> | Uptime | 7100847 | >>> +-----------------------------------+-------------+ >>> 251 rows in set (0.13 sec) >>> >>> >