服务器规格
RAM CPU STORAGE
80 GB 20 Cores 1536 GB SSD
TRANSFER NETWORK IN NETWORK OUT
20 TB 40 Gbps 8000 Mbps
这是显示状态的结果：
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 0
MariaDB 数据库服务器配置文件。
#
# 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my.cnf已经尽我所能地调整了，但 MariaDB 仍然疯狂飙升 - 可以在几秒钟内从 110% 上升到 200+。我已经尽我所能地索引了我的表，但似乎仍然没有什么可以平息延迟。既然我有 80GB 的 RAM，有没有办法让 MariaDB 使用更多的 RAM，因为目前它只使用了总共 80GB 的 9% 左右？
我在这里感到迷茫，因为我所做的一切都没有效果，甚至看起来帮助。
答案1
在你的 .cnf 中的 [mysqld] 部分中
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
通常每天只进行 1 次更改，在您的情况下，请全部更改以求生存。
mysqlcalculator.com可能会成为您使用的宝贵资源。
请在正常运行 24 小时后重新发布 SHOW GLOBAL STATUS，并在问题中添加 SHOW GLOBAL VARIABLES 和 SHOW ENGINE INNODB STATUS 以供进一步分析。