Mysql
MariaDB 佔用 100-200% CPU
伺服器規格
RAM CPU STORAGE 80 GB 20 Cores 1536 GB SSD TRANSFER NETWORK IN NETWORK OUT 20 TB 40 Gbps 8000 Mbps這是顯示狀態的結果：
show status: Aborted_clients 2 Aborted_connects 0 Access_denied_errors 0 Acl_column_grants 0 Acl_database_grants 0 Acl_function_grants 0 Acl_procedure_grants 0 Acl_proxy_users 2 Acl_role_grants 0 Acl_roles 0 Acl_table_grants 0 Acl_users 9 Aria_pagecache_blocks_not_flushed 0 Aria_pagecache_blocks_unused 15706 Aria_pagecache_blocks_used 2 Aria_pagecache_read_requests 13 Aria_pagecache_reads 4 Aria_pagecache_write_requests 6 Aria_pagecache_writes 0 Aria_transaction_log_syncs 0 Binlog_commits 5624 Binlog_group_commits 5624 Binlog_group_commit_trigger_count 0 Binlog_group_commit_trigger_lock_wait 0 Binlog_group_commit_trigger_timeout 0 Binlog_snapshot_file mariadb-bin.000017 Binlog_snapshot_position 2460550 Binlog_bytes_written 0 Binlog_cache_disk_use 0 Binlog_cache_use 5628 Binlog_stmt_cache_disk_use 0 Binlog_stmt_cache_use 0 Busy_time 0.000000 Bytes_received 510 Bytes_sent 1262 Com_admin_commands 0 Com_alter_db 0 Com_alter_db_upgrade 0 Com_alter_event 0 Com_alter_function 0 Com_alter_procedure 0 Com_alter_server 0 Com_alter_table 0 Com_alter_tablespace 0 Com_analyze 0 Com_assign_to_keycache 0 Com_begin 0 Com_binlog 0 Com_call_procedure 0 Com_change_db 1 Com_change_master 0 Com_check 0 Com_checksum 0 Com_commit 0 Com_compound_sql 0 Com_create_db 0 Com_create_event 0 Com_create_function 0 Com_create_index 0 Com_create_procedure 0 Com_create_role 0 Com_create_server 0 Com_create_table 0 Com_create_temporary_table 0 Com_create_trigger 0 Com_create_udf 0 Com_create_user 0 Com_create_view 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_procedure 0 Com_drop_role 0 Com_drop_server 0 Com_drop_table 0 Com_drop_temporary_table 0 Com_drop_trigger 0 Com_drop_user 0 Com_drop_view 0 Com_empty_query 0 Com_execute_sql 0 Com_flush 0 Com_get_diagnostics 0 Com_grant 0 Com_grant_role 0 Com_ha_close 0 Com_ha_open 0 Com_ha_read 0 Com_help 0 Com_insert 0 Com_insert_select 0 Com_install_plugin 0 Com_kill 0 Com_load 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_release_savepoint 0 Com_rename_table 0 Com_rename_user 0 Com_repair 0 Com_replace 0 Com_replace_select 0 Com_reset 0 Com_resignal 0 Com_revoke 0 Com_revoke_all 0 Com_revoke_role 0 Com_rollback 0 Com_rollback_to_savepoint 0 Com_savepoint 0 Com_select 2 Com_set_option 3 Com_show_authors 0 Com_show_binlog_events 0 Com_show_binlogs 0 Com_show_charsets 0 Com_show_collations 0 Com_show_contributors 0 Com_show_create_db 0 Com_show_create_event 0 Com_show_create_func 0 Com_show_create_proc 0 Com_show_create_table 0 Com_show_create_trigger 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_explain 0 Com_show_fields 0 Com_show_function_status 0 Com_show_generic 0 Com_show_grants 0 Com_show_keys 0 Com_show_master_status 0 Com_show_open_tables 0 Com_show_plugins 0 Com_show_privileges 0 Com_show_procedure_status 0 Com_show_processlist 0 Com_show_profile 0 Com_show_profiles 0 Com_show_relaylog_events 0 Com_show_slave_hosts 0 Com_show_slave_status 0 Com_show_status 1 Com_show_storage_engines 0 Com_show_table_status 0 Com_show_tables 0 Com_show_triggers 0 Com_show_variables 3 Com_show_warnings 0 Com_shutdown 0 Com_signal 0 Com_start_all_slaves 0 Com_start_slave 0 Com_stmt_close 0 Com_stmt_execute 0 Com_stmt_fetch 0 Com_stmt_prepare 0 Com_stmt_reprepare 0 Com_stmt_reset 0 Com_stmt_send_long_data 0 Com_stop_all_slaves 0 Com_stop_slave 0 Com_truncate 0 Com_uninstall_plugin 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 Connection_errors_accept 0 Connection_errors_internal 0 Connection_errors_max_connections 0 Connection_errors_peer_address 0 Connection_errors_select 0 Connection_errors_tcpwrap 0 Connections 11180 Cpu_time 0.000000 Created_tmp_disk_tables 0 Created_tmp_files 6 Created_tmp_tables 4 Delayed_errors 0 Delayed_insert_threads 0 Delayed_writes 0 Delete_scan 0 Empty_queries 0 Executed_events 0 Executed_triggers 0 Feature_delay_key_write 0 Feature_dynamic_columns 0 Feature_fulltext 0 Feature_gis 0 Feature_locale 1 Feature_subquery 0 Feature_timezone 0 Feature_trigger 0 Feature_xml 0 Flush_commands 1 Handler_commit 0 Handler_delete 0 Handler_discover 0 Handler_external_lock 0 Handler_icp_attempts 0 Handler_icp_match 0 Handler_mrr_init 0 Handler_mrr_key_refills 0 Handler_mrr_rowid_refills 0 Handler_prepare 0 Handler_read_first 0 Handler_read_key 0 Handler_read_last 0 Handler_read_next 0 Handler_read_prev 0 Handler_read_retry 0 Handler_read_rnd 0 Handler_read_rnd_deleted 0 Handler_read_rnd_next 11 Handler_rollback 0 Handler_savepoint 0 Handler_savepoint_rollback 0 Handler_tmp_update 0 Handler_tmp_write 7 Handler_update 0 Handler_write 0 Innodb_available_undo_logs 128 Innodb_background_log_sync 1240 Innodb_buffer_pool_bytes_data 189562880 Innodb_buffer_pool_bytes_dirty 5832704 Innodb_buffer_pool_dump_status Dumping buffer pool(s) not yet started Innodb_buffer_pool_load_status Loading buffer pool(s) not yet started Innodb_buffer_pool_pages_data 11570 Innodb_buffer_pool_pages_dirty 356 Innodb_buffer_pool_pages_flushed 10802 Innodb_buffer_pool_pages_free 1561166 Innodb_buffer_pool_pages_lru_flushed 0 Innodb_buffer_pool_pages_made_not_young 0 Innodb_buffer_pool_pages_made_young 0 Innodb_buffer_pool_pages_misc 120 Innodb_buffer_pool_pages_old 4428 Innodb_buffer_pool_pages_total 1572856 Innodb_buffer_pool_read_ahead 9780 Innodb_buffer_pool_read_ahead_evicted 0 Innodb_buffer_pool_read_ahead_rnd 0 Innodb_buffer_pool_read_requests 2159295327 Innodb_buffer_pool_reads 1780 Innodb_buffer_pool_wait_free 0 Innodb_buffer_pool_write_requests 63831 Innodb_checkpoint_age 385586 Innodb_checkpoint_max_age 80826164 Innodb_data_fsyncs 7786 Innodb_data_pending_fsyncs 0 Innodb_data_pending_reads 0 Innodb_data_pending_writes 0 Innodb_data_read 189469184 Innodb_data_reads 11603 Innodb_data_writes 17885 Innodb_data_written 361596416 Innodb_dblwr_pages_written 10802 Innodb_dblwr_writes 141 Innodb_deadlocks 0 Innodb_have_atomic_builtins ON Innodb_history_list_length 35 Innodb_ibuf_discarded_delete_marks 0 Innodb_ibuf_discarded_deletes 0 Innodb_ibuf_discarded_inserts 0 Innodb_ibuf_free_list 0 Innodb_ibuf_merged_delete_marks 0 Innodb_ibuf_merged_deletes 0 Innodb_ibuf_merged_inserts 0 Innodb_ibuf_merges 0 Innodb_ibuf_segment_size 2 Innodb_ibuf_size 1 Innodb_log_waits 0 Innodb_log_write_requests 8106 Innodb_log_writes 6784 Innodb_lsn_current 1309986856 Innodb_lsn_flushed 1309986730 Innodb_lsn_last_checkpoint 1309601270 Innodb_master_thread_active_loops 1156 Innodb_master_thread_idle_loops 84 Innodb_max_trx_id 2809740 Innodb_mem_adaptive_hash 409079776 Innodb_mem_dictionary 102244264 Innodb_mem_total 26990346240 Innodb_mutex_os_waits 2127 Innodb_mutex_spin_rounds 42261889 Innodb_mutex_spin_waits 28215967 Innodb_oldest_view_low_limit_trx_id 0 Innodb_os_log_fsyncs 6858 Innodb_os_log_pending_fsyncs 0 Innodb_os_log_pending_writes 0 Innodb_os_log_written 7598080 Innodb_page_size 16384 Innodb_pages_created 11 Innodb_pages_read 11559 Innodb_pages0_read 33 Innodb_pages_written 10802 Innodb_purge_trx_id 2809728 Innodb_purge_undo_no 0 Innodb_read_views_memory 720 Innodb_row_lock_current_waits 3 Innodb_row_lock_time 2331140 Innodb_row_lock_time_avg 2578 Innodb_row_lock_time_max 5959 Innodb_row_lock_waits 904 Innodb_rows_deleted 0 Innodb_rows_inserted 868 Innodb_rows_read 5115273889 Innodb_rows_updated 11428 Innodb_system_rows_deleted 0 Innodb_system_rows_inserted 0 Innodb_system_rows_read 0 Innodb_system_rows_updated 0 Innodb_s_lock_os_waits 91 Innodb_s_lock_spin_rounds 2773 Innodb_s_lock_spin_waits 98 Innodb_truncated_status_writes 0 Innodb_x_lock_os_waits 11 Innodb_x_lock_spin_rounds 372 Innodb_x_lock_spin_waits 5 Innodb_page_compression_saved 0 Innodb_page_compression_trim_sect512 0 Innodb_page_compression_trim_sect1024 0 Innodb_page_compression_trim_sect2048 0 Innodb_page_compression_trim_sect4096 0 Innodb_page_compression_trim_sect8192 0 Innodb_page_compression_trim_sect16384 0 Innodb_page_compression_trim_sect32768 0 Innodb_num_index_pages_written 2906 Innodb_num_non_index_pages_written 14979 Innodb_num_pages_page_compressed 0 Innodb_num_page_compressed_trim_op 0 Innodb_num_page_compressed_trim_op_saved 0 Innodb_num_pages_page_decompressed 0 Innodb_num_pages_page_compression_error 0 Innodb_num_pages_encrypted 0 Innodb_num_pages_decrypted 0 Innodb_have_lz4 ON Innodb_have_lzo OFF Innodb_have_lzma OFF Innodb_have_bzip2 OFF Innodb_have_snappy OFF Innodb_defragment_compression_failures 0 Innodb_defragment_failures 0 Innodb_defragment_count 0 Innodb_onlineddl_rowlog_rows 0 Innodb_onlineddl_rowlog_pct_used 0 Innodb_onlineddl_pct_progress 0 Innodb_secondary_index_triggered_cluster_reads 13139 Innodb_secondary_index_triggered_cluster_reads_avo... 0 Innodb_encryption_rotation_pages_read_from_cache 0 Innodb_encryption_rotation_pages_read_from_disk 0 Innodb_encryption_rotation_pages_modified 0 Innodb_encryption_rotation_pages_flushed 0 Innodb_encryption_rotation_estimated_iops 0 Innodb_encryption_key_rotation_list_length 0 Innodb_scrub_background_page_reorganizations 0 Innodb_scrub_background_page_splits 0 Innodb_scrub_background_page_split_failures_underf... 0 Innodb_scrub_background_page_split_failures_out_of... 0 Innodb_scrub_background_page_split_failures_missin... 0 Innodb_scrub_background_page_split_failures_unknow... 0 Innodb_encryption_num_key_requests 0 Key_blocks_not_flushed 0 Key_blocks_unused 19586535 Key_blocks_used 4 Key_blocks_warm 0 Key_read_requests 14 Key_reads 4 Key_write_requests 0 Key_writes 0 Last_query_cost 10.499000 Master_gtid_wait_count 0 Master_gtid_wait_time 0 Master_gtid_wait_timeouts 0 Max_statement_time_exceeded 0 Max_used_connections 7 Memory_used 67544 Not_flushed_delayed_rows 0 Open_files 28 Open_streams 0 Open_table_definitions 48 Open_tables 64 Opened_files 149 Opened_plugin_libraries 0 Opened_table_definitions 0 Opened_tables 0 Opened_views 0 Performance_schema_accounts_lost 0 Performance_schema_cond_classes_lost 0 Performance_schema_cond_instances_lost 0 Performance_schema_digest_lost 0 Performance_schema_file_classes_lost 0 Performance_schema_file_handles_lost 0 Performance_schema_file_instances_lost 0 Performance_schema_hosts_lost 0 Performance_schema_locker_lost 0 Performance_schema_mutex_classes_lost 0 Performance_schema_mutex_instances_lost 0 Performance_schema_rwlock_classes_lost 0 Performance_schema_rwlock_instances_lost 0 Performance_schema_session_connect_attrs_lost 0 Performance_schema_socket_classes_lost 0 Performance_schema_socket_instances_lost 0 Performance_schema_stage_classes_lost 0 Performance_schema_statement_classes_lost 0 Performance_schema_table_handles_lost 0 Performance_schema_table_instances_lost 0 Performance_schema_thread_classes_lost 0 Performance_schema_thread_instances_lost 0 Performance_schema_users_lost 0 Prepared_stmt_count 4 Qcache_free_blocks 372 Qcache_free_memory 65739128 Qcache_hits 10833 Qcache_inserts 16036 Qcache_lowmem_prunes 0 Qcache_not_cached 2213 Qcache_queries_in_cache 774 Qcache_total_blocks 1937 Queries 235946 Questions 10 Rows_read 0 Rows_sent 8 Rows_tmp_read 7 Rpl_status AUTH_MASTER Select_full_join 0 Select_full_range_join 0 Select_range 0 Select_range_check 0 Select_scan 4 Slave_connections 0 Slave_heartbeat_period 0.000 Slave_open_temp_tables 0 Slave_received_heartbeats 0 Slave_retried_transactions 0 Slave_running OFF Slave_skipped_errors 0 Slaves_connected 0 Slaves_running 0 Slow_launch_threads 0 Slow_queries 0 Sort_merge_passes 0 Sort_priority_queue_sorts 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_server_not_after Ssl_server_not_before 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 Subquery_cache_hit 0 Subquery_cache_miss 0 Syncs 6 Table_locks_immediate 35507 Table_locks_waited 0 Tc_log_max_pages_used 0 Tc_log_page_size 0 Tc_log_page_waits 0 Threadpool_idle_threads 0 Threadpool_threads 0 Threads_cached 0 Threads_connected 7 Threads_created 7 Threads_running 5 Update_scan 0 Uptime 1247 Uptime_since_flush_status 1247 wsrep_cluster_conf_id 18446744073709551615 wsrep_cluster_size 0 wsrep_cluster_state_uuid wsrep_cluster_status Disconnected wsrep_connected OFF wsrep_local_bf_aborts 0 wsrep_local_index 18446744073709551615 wsrep_provider_name wsrep_provider_vendor wsrep_provider_version wsrep_ready OFF wsrep_thread_count 0MariaDB 數據庫伺服器配置文件。
# # You can copy this file to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp lc_messages_dir = /usr/share/mysql lc_messages = en_US skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = * # # * Fine Tuning # max_connections = 3500 connect_timeout = 5 wait_timeout = 600 max_allowed_packet = 16M thread_cache_size = -1 sort_buffer_size = 40M bulk_insert_buffer_size = 160M tmp_table_size = 320M max_heap_table_size = 320M # # * MyISAM # # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched. On error, make copy and try a repair. myisam_recover_options = BACKUP key_buffer_size = 23G #open-files-limit = 2000 table_open_cache = 400 myisam_sort_buffer_size = 512M concurrent_insert = 2 read_buffer_size = 2M read_rnd_buffer_size = 1M # # * Query Cache Configuration # # Cache only tiny result sets, so we can fit more in the query cache. query_cache_limit = 128K query_cache_size = 64M # for more write intensive setups, set to DEMAND or OFF #query_cache_type = DEMAND # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 # # Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf. # # we do want to know about network errors and such log_warnings = 2 # # Enable the slow query log to see queries with especially long duration #slow_query_log[={0|1}] slow_query_log_file = /var/log/mysql/mariadb-slow.log long_query_time = 10 #log_slow_rate_limit = 1000 log_slow_verbosity = query_plan #log-queries-not-using-indexes #log_slow_admin_statements # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. #server-id = 1 #report_host = master1 #auto_increment_increment = 2 #auto_increment_offset = 1 log_bin = /var/log/mysql/mariadb-bin log_bin_index = /var/log/mysql/mariadb-bin.index # not fab for performance, but safer #sync_binlog = 1 expire_logs_days = 10 max_binlog_size = 100M # slaves #relay_log = /var/log/mysql/relay-bin #relay_log_index = /var/log/mysql/relay-bin.index #relay_log_info_file = /var/log/mysql/relay-bin.info #log_slave_updates #read_only # # If applications support it, this stricter sql_mode prevents some # mistakes like inserting invalid dates etc. #sql_mode = NO_ENGINE_SUBSTITUTION,TRADITIONAL # # * InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! default_storage_engine = InnoDB # you can't just change log file size, requires special procedure #innodb_log_file_size = 50M innodb_buffer_pool_size = 24G innodb_log_buffer_size = 8M innodb_file_per_table = 1 innodb_open_files = 400 innodb_io_capacity = 400 innodb_flush_method = O_DIRECT # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem # # * Galera-related settings # [galera] # Mandatory settings #wsrep_on=ON #wsrep_provider= #wsrep_cluster_address= #binlog_format=row #default_storage_engine=InnoDB #innodb_autoinc_lock_mode=2 # # Allow server to accept connections on all interfaces. # #bind-address=0.0.0.0 # # Optional setting #wsrep_slave_threads=1 #innodb_flush_log_at_trx_commit=0 [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completion [isamchk] key_buffer = 16M # # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/ [mysqld] character-set-server = utf8我已經
my.cnf盡可能地調整了我的方法，但 MariaDB 仍然瘋狂地飆升 - 可以在幾秒鐘內從 110% 上升到 200+。我已經盡我所知為我的表格建立了索引，但似乎沒有什麼能平息滯後。有沒有辦法，因為我有 80GB 的 RAM，我可以讓 MariaDB 使用更多的 RAM，因為目前它只使用了 80GB 總量的 9% 左右？我在這裡感到迷失，因為我所做的一切都不起作用，甚至似乎沒有幫助。
在你的 .cnf 內
$$ mysqld $$部分
max_connections = 300 # from 3500 until you get stabilized thread_cache_size = 100 # from -1 100 CAP is upper limit at this time key_buffer_size = 32M # from 23G whoa, likely an accident. only used by ISAM REMOVE sort_buffer_size # from 40M to default REMOVE read_buffer_size # from 2M to default REMOVE read_rnd_buffer_size # from 1M to default通常每天只進行 1 次更改，在您的情況下，將它們全部更改以生存。
mysqlcalculator.com可能是您使用的寶貴資源。
請在正常執行 24 小時後重新發布 SHOW GLOBAL STATUS 並添加到您的問題 SHOW GLOBAL VARIABLES 和 SHOW ENGINE INNODB STATUS 以進行進一步分析。