Mysql Mariadb 10.4 Galera群集上缺少交换内存_Mysql_Mariadb_Centos8_Galera

Mysql Mariadb 10.4 Galera群集上缺少交换内存

mysql mariadb

Mysql Mariadb 10.4 Galera群集上缺少交换内存,mysql,mariadb,centos8,galera,Mysql,Mariadb,Centos8,Galera,我有3个节点的Galera集群和MariaDB 10.4.13。每个节点都有32GB RAM和2GB交换。在我1个月前的mysql调优之后，每个节点的内存几乎都满了，但我认为还可以。但最近几天互换规模达到最大值，并未下降。我的My.cnf如下所示： ####慢速日志记录 slow\u query\u log\u file=/var/lib/mysql/mysql-slow.log 长查询时间=2 slow\u query\u log=ON 使用\u index=ON记录\u查询\u not \u

我有3个节点的Galera集群和MariaDB 10.4.13。每个节点都有32GB RAM和2GB交换。在我1个月前的mysql调优之后，每个节点的内存几乎都满了，但我认为还可以。但最近几天互换规模达到最大值，并未下降。我的My.cnf如下所示：

####慢速日志记录

slow\u query\u log\u file=/var/lib/mysql/mysql-slow.log
长查询时间=2
slow\u query\u log=ON
使用\u index=ON记录\u查询\u not \u

INNODB选项
innodb_缓冲区_池_大小=24000M
innodb_刷新_日志_在_trx_commit=2
innodb_文件每_表=1
innodb_数据_文件_路径=ibdata1:100M:autoextend
innodb_读取_io_线程=4
innodb_写入_io_线程=4
innodb_doublewrite=1
innodb_日志_文件_大小=6144M
innodb_日志_缓冲区_大小=96M
innodb_缓冲区_池_实例=24
innodb\u日志\u组中的文件\u=2
innodb_线程_并发=0
#####innodb#u file#u format=barracuda
innodb_flush_method=O_DIRECT
######innodb_锁_不安全_for_binlog=1
innodb_autoinc_锁定模式=2
避免在执行诸如显示表格等操作时更新统计信息
innodb_元数据上的统计数据=0
默认存储引擎=innodb
innodb_严格_模式=0

######其他东西、缓冲器等
######键#缓冲区#大小=24M
tmp_表_尺寸=1024M
最大堆表大小=1024M
允许的最大数据包数=512M
#####排序#缓冲区大小=256K
#####读取#缓冲区大小=256K
########读取#缓存#大小=512K
#####myisam#排序#缓冲区#大小=8M
跳过\u名称\u解析
memlock=0
sysdate\u现在为\u=1
最大连接数=500
线程\缓存\大小=512

查询\缓存\类型=1
查询缓存大小=512M
查询\缓存\限制=512K
连接缓冲区大小=1M

表\u打开\u缓存=116925
打开\u文件\u限制=233850
表\u定义\u缓存=58863
表\u打开\u缓存\u实例=8

小写字母表名称=0

对于这种配置，我希望MariaDB使用maximum，只要它不是关键的。

我想检查一下这个配置，也许可以禁用查询缓存部分，还可以调整InnoDB值。请给我一些建议，并让我知道交换大小是否足够好，或者可能需要禁用mysql来使用交换。

这些都不一定太大，但可能会有一些事情合谋使它们太大，尤其是在组合时：

innodb_buffer_pool_size=24000M  -- quick fix: lower this
      (otherwise it should be a good size)

tmp_table_size = 1024M      -- lower to 1% of RAM
max_heap_table_size = 1024M -- ditto

max_allowed_packet = 512M  -- possibly too big

max_connections=500   -- lower to Max_used_connections or 100

query_cache_type = 1     -- 0 -- QC is not allowed on Galera
query_cache_size = 512M  -- 0 -- ditto

table_open_cache = 116925      -- see how 2000 works
table_definition_cache = 58863 -- ditto

为了进一步分析，请提供此处讨论的

全局状态

和

变量

这些都不一定太大，但可能会有一些事情合谋使它们太大，尤其是在组合时：

innodb_buffer_pool_size=24000M  -- quick fix: lower this
      (otherwise it should be a good size)

tmp_table_size = 1024M      -- lower to 1% of RAM
max_heap_table_size = 1024M -- ditto

max_allowed_packet = 512M  -- possibly too big

max_connections=500   -- lower to Max_used_connections or 100

query_cache_type = 1     -- 0 -- QC is not allowed on Galera
query_cache_size = 512M  -- 0 -- ditto

table_open_cache = 116925      -- see how 2000 works
table_definition_cache = 58863 -- ditto

为了进一步分析，请提供

全局状态

和

变量

a此处讨论：

对不起，我看不到这里有多少令人兴奋的地方：

全球状态和变量分析：

Innodb_dblwr_pages_written / Innodb_dblwr_writes = 2.28
aria_checkpoint_log_activity = 1.05e+6
aria_pagecache_buffer_size = 128MB
innodb_buffer_pool_chunk_size = 128MB
innodb_max_undo_log_size = 10MB
innodb_online_alter_log_max_size = 128MB
innodb_sort_buffer_size = 1.05e+6
innodb_spin_wait_delay = 4
lock_wait_timeout = 86,400
performance_schema_max_mutex_classes = 0
query_cache_limit = 524,288

Acl_column_grants = 216
Acl_database_grants = 385
Acl_table_grants = 1,877
Innodb_buffer_pool_pages_free = 1.07e+6
Innodb_num_open_files = 9,073
Memory_used_initial = 8.16e+8
Open_table_definitions = 4,278
Open_tables = 4,439
Performance_schema_file_instances_lost = 1,732
Performance_schema_mutex_classes_lost = 190
Performance_schema_table_handles_lost = 570
Qcache_free_blocks = 9,122
Qcache_total_blocks = 457,808
Tc_log_page_size = 4,096
Uptime - Uptime_since_flush_status = 141,130
aria_sort_buffer_size = 256.0MB
auto_increment_offset = 3
gtid_domain_id = 12,000
innodb_open_files = 116,660
max_heap_table_size = 1024MB
max_relay_log_size = 1024MB
min(max_heap_table_size, tmp_table_size) = 1024MB
performance_schema_events_stages_history_size = 20
performance_schema_events_statements_history_size = 20
performance_schema_events_waits_history_size = 20
performance_schema_max_cond_classes = 90
table_definition_cache = 58,863
table_open_cache / max_connections = 233
tmp_memory_table_size = 1024MB
wsrep_cluster_size = 3
wsrep_gtid_domain_id = 12,000
wsrep_local_bf_aborts = 107
wsrep_slave_threads = 32
wsrep_thread_count = 33

aria_recover_options = BACKUP,QUICK
disconnect_on_expired_password = OFF
gtid_ignore_duplicates = ON
gtid_strict_mode = ON
histogram_type = DOUBLE_PREC_HB
innodb_fast_shutdown = 1
myisam_stats_method = NULLS_UNEQUAL
old_alter_table = DEFAULT
opt_s__optimize_join_buffer_size = on
optimizer_trace = enabled=off
use_stat_tables = PREFERABLY_FOR_QUERIES
wsrep_cluster_status = Primary
wsrep_connected = ON
wsrep_debug = NONE
wsrep_gtid_mode = ON
wsrep_load_data_splitting = OFF
wsrep_provider = /usr/lib64/galera-4/libgalera_smm.so
wsrep_provider_name = Galera
wsrep_provider_options = base_dir = /var/lib/mysql/; base_host = FIRST_NODE_IP; base_port = 4567; cert.log_conflicts = no; cert.optimistic_pa = yes; debug = no; evs.auto_evict = 0; evs.causal_keepalive_period = PT1S; evs.debug_log_mask = 0x1; evs.delay_margin = PT1S; evs.delayed_keep_period = PT30S; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT15S; evs.info_log_mask = 0; evs.install_timeout = PT7.5S; evs.join_retrans_period = PT1S; evs.keepalive_period = PT1S; evs.max_install_timeouts = 3; evs.send_window = 4; evs.stats_report_period = PT1M; evs.suspect_timeout = PT5S; evs.use_aggregate = true; evs.user_send_window = 2; evs.version = 1; evs.view_forget_timeout = P1D; gcache.dir = /var/lib/mysql/; gcache.keep_pages_size = 0; gcache.mem_size = 0; gcache.name = galera.cache; gcache.page_size = 128M; gcache.recover = yes; gcache.size = 1024M; gcomm.thread_prio = ; gcs.fc_debug = 0; gcs.fc_factor = 1.0; gcs.fc_limit = 16; gcs.fc_master_slave = no; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; gcs.recv_q_hard_limit = 9223372036854775807; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = no; gmcast.listen_addr = tcp://0.0.0.0:4567; gmcast.mcast_addr = ; gmcast.mcast_ttl = 1; gmcast.peer_timeout = PT3S; gmcast.segment = 0; gmcast.time_wait = PT5S; gmcast.version = 0; ist.recv_addr = FIRST_NODE_IP; pc.announce_timeout = PT3S; pc.checksum = false; pc.ignore_quorum = false; pc.ignore_sb = false; pc.linger = PT20S; pc.npvo = false; pc.recovery = true; pc.version = 0; pc.wait_prim = true; pc.wait_prim_timeout = PT30S; pc.weight = 1; protonet.backend = asio; protonet.version = 0; repl.causal_read_timeout = PT30S; repl.commit_order = 3; repl.key_format = FLAT8; repl.max_ws_size = 2147483647; repl.proto_max = 10; socket.checksum = 2; socket.recv_buf_size = auto; socket.send_buf_size = auto;
wsrep_provider_vendor = Codership Oy 
wsrep_provider_version = 26.4.4(r4599)
wsrep_replicate_myisam = ON
wsrep_sst_auth = ********
wsrep_sst_method = mariabackup
wsrep_start_position = 353e0616-cb37-11ea-b614-be241cab877e:39442474

观察结果：

Innodb_dblwr_pages_written / Innodb_dblwr_writes = 2.28
aria_checkpoint_log_activity = 1.05e+6
aria_pagecache_buffer_size = 128MB
innodb_buffer_pool_chunk_size = 128MB
innodb_max_undo_log_size = 10MB
innodb_online_alter_log_max_size = 128MB
innodb_sort_buffer_size = 1.05e+6
innodb_spin_wait_delay = 4
lock_wait_timeout = 86,400
performance_schema_max_mutex_classes = 0
query_cache_limit = 524,288

Acl_column_grants = 216
Acl_database_grants = 385
Acl_table_grants = 1,877
Innodb_buffer_pool_pages_free = 1.07e+6
Innodb_num_open_files = 9,073
Memory_used_initial = 8.16e+8
Open_table_definitions = 4,278
Open_tables = 4,439
Performance_schema_file_instances_lost = 1,732
Performance_schema_mutex_classes_lost = 190
Performance_schema_table_handles_lost = 570
Qcache_free_blocks = 9,122
Qcache_total_blocks = 457,808
Tc_log_page_size = 4,096
Uptime - Uptime_since_flush_status = 141,130
aria_sort_buffer_size = 256.0MB
auto_increment_offset = 3
gtid_domain_id = 12,000
innodb_open_files = 116,660
max_heap_table_size = 1024MB
max_relay_log_size = 1024MB
min(max_heap_table_size, tmp_table_size) = 1024MB
performance_schema_events_stages_history_size = 20
performance_schema_events_statements_history_size = 20
performance_schema_events_waits_history_size = 20
performance_schema_max_cond_classes = 90
table_definition_cache = 58,863
table_open_cache / max_connections = 233
tmp_memory_table_size = 1024MB
wsrep_cluster_size = 3
wsrep_gtid_domain_id = 12,000
wsrep_local_bf_aborts = 107
wsrep_slave_threads = 32
wsrep_thread_count = 33

aria_recover_options = BACKUP,QUICK
disconnect_on_expired_password = OFF
gtid_ignore_duplicates = ON
gtid_strict_mode = ON
histogram_type = DOUBLE_PREC_HB
innodb_fast_shutdown = 1
myisam_stats_method = NULLS_UNEQUAL
old_alter_table = DEFAULT
opt_s__optimize_join_buffer_size = on
optimizer_trace = enabled=off
use_stat_tables = PREFERABLY_FOR_QUERIES
wsrep_cluster_status = Primary
wsrep_connected = ON
wsrep_debug = NONE
wsrep_gtid_mode = ON
wsrep_load_data_splitting = OFF
wsrep_provider = /usr/lib64/galera-4/libgalera_smm.so
wsrep_provider_name = Galera
wsrep_provider_options = base_dir = /var/lib/mysql/; base_host = FIRST_NODE_IP; base_port = 4567; cert.log_conflicts = no; cert.optimistic_pa = yes; debug = no; evs.auto_evict = 0; evs.causal_keepalive_period = PT1S; evs.debug_log_mask = 0x1; evs.delay_margin = PT1S; evs.delayed_keep_period = PT30S; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT15S; evs.info_log_mask = 0; evs.install_timeout = PT7.5S; evs.join_retrans_period = PT1S; evs.keepalive_period = PT1S; evs.max_install_timeouts = 3; evs.send_window = 4; evs.stats_report_period = PT1M; evs.suspect_timeout = PT5S; evs.use_aggregate = true; evs.user_send_window = 2; evs.version = 1; evs.view_forget_timeout = P1D; gcache.dir = /var/lib/mysql/; gcache.keep_pages_size = 0; gcache.mem_size = 0; gcache.name = galera.cache; gcache.page_size = 128M; gcache.recover = yes; gcache.size = 1024M; gcomm.thread_prio = ; gcs.fc_debug = 0; gcs.fc_factor = 1.0; gcs.fc_limit = 16; gcs.fc_master_slave = no; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; gcs.recv_q_hard_limit = 9223372036854775807; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = no; gmcast.listen_addr = tcp://0.0.0.0:4567; gmcast.mcast_addr = ; gmcast.mcast_ttl = 1; gmcast.peer_timeout = PT3S; gmcast.segment = 0; gmcast.time_wait = PT5S; gmcast.version = 0; ist.recv_addr = FIRST_NODE_IP; pc.announce_timeout = PT3S; pc.checksum = false; pc.ignore_quorum = false; pc.ignore_sb = false; pc.linger = PT20S; pc.npvo = false; pc.recovery = true; pc.version = 0; pc.wait_prim = true; pc.wait_prim_timeout = PT30S; pc.weight = 1; protonet.backend = asio; protonet.version = 0; repl.causal_read_timeout = PT30S; repl.commit_order = 3; repl.key_format = FLAT8; repl.max_ws_size = 2147483647; repl.proto_max = 10; socket.checksum = 2; socket.recv_buf_size = auto; socket.send_buf_size = auto;
wsrep_provider_vendor = Codership Oy 
wsrep_provider_version = 26.4.4(r4599)
wsrep_replicate_myisam = ON
wsrep_sst_auth = ********
wsrep_sst_method = mariabackup
wsrep_start_position = 353e0616-cb37-11ea-b614-be241cab877e:39442474

版本：10.4.13-MariaDB-log
32 GB内存
正常运行时间=1d 15:19:41
您没有在Windows上运行
运行64位版本
您似乎正在完全（或大部分）运行InnoDB

更重要的问题：

Innodb_dblwr_pages_written / Innodb_dblwr_writes = 2.28
aria_checkpoint_log_activity = 1.05e+6
aria_pagecache_buffer_size = 128MB
innodb_buffer_pool_chunk_size = 128MB
innodb_max_undo_log_size = 10MB
innodb_online_alter_log_max_size = 128MB
innodb_sort_buffer_size = 1.05e+6
innodb_spin_wait_delay = 4
lock_wait_timeout = 86,400
performance_schema_max_mutex_classes = 0
query_cache_limit = 524,288

Acl_column_grants = 216
Acl_database_grants = 385
Acl_table_grants = 1,877
Innodb_buffer_pool_pages_free = 1.07e+6
Innodb_num_open_files = 9,073
Memory_used_initial = 8.16e+8
Open_table_definitions = 4,278
Open_tables = 4,439
Performance_schema_file_instances_lost = 1,732
Performance_schema_mutex_classes_lost = 190
Performance_schema_table_handles_lost = 570
Qcache_free_blocks = 9,122
Qcache_total_blocks = 457,808
Tc_log_page_size = 4,096
Uptime - Uptime_since_flush_status = 141,130
aria_sort_buffer_size = 256.0MB
auto_increment_offset = 3
gtid_domain_id = 12,000
innodb_open_files = 116,660
max_heap_table_size = 1024MB
max_relay_log_size = 1024MB
min(max_heap_table_size, tmp_table_size) = 1024MB
performance_schema_events_stages_history_size = 20
performance_schema_events_statements_history_size = 20
performance_schema_events_waits_history_size = 20
performance_schema_max_cond_classes = 90
table_definition_cache = 58,863
table_open_cache / max_connections = 233
tmp_memory_table_size = 1024MB
wsrep_cluster_size = 3
wsrep_gtid_domain_id = 12,000
wsrep_local_bf_aborts = 107
wsrep_slave_threads = 32
wsrep_thread_count = 33

aria_recover_options = BACKUP,QUICK
disconnect_on_expired_password = OFF
gtid_ignore_duplicates = ON
gtid_strict_mode = ON
histogram_type = DOUBLE_PREC_HB
innodb_fast_shutdown = 1
myisam_stats_method = NULLS_UNEQUAL
old_alter_table = DEFAULT
opt_s__optimize_join_buffer_size = on
optimizer_trace = enabled=off
use_stat_tables = PREFERABLY_FOR_QUERIES
wsrep_cluster_status = Primary
wsrep_connected = ON
wsrep_debug = NONE
wsrep_gtid_mode = ON
wsrep_load_data_splitting = OFF
wsrep_provider = /usr/lib64/galera-4/libgalera_smm.so
wsrep_provider_name = Galera
wsrep_provider_options = base_dir = /var/lib/mysql/; base_host = FIRST_NODE_IP; base_port = 4567; cert.log_conflicts = no; cert.optimistic_pa = yes; debug = no; evs.auto_evict = 0; evs.causal_keepalive_period = PT1S; evs.debug_log_mask = 0x1; evs.delay_margin = PT1S; evs.delayed_keep_period = PT30S; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT15S; evs.info_log_mask = 0; evs.install_timeout = PT7.5S; evs.join_retrans_period = PT1S; evs.keepalive_period = PT1S; evs.max_install_timeouts = 3; evs.send_window = 4; evs.stats_report_period = PT1M; evs.suspect_timeout = PT5S; evs.use_aggregate = true; evs.user_send_window = 2; evs.version = 1; evs.view_forget_timeout = P1D; gcache.dir = /var/lib/mysql/; gcache.keep_pages_size = 0; gcache.mem_size = 0; gcache.name = galera.cache; gcache.page_size = 128M; gcache.recover = yes; gcache.size = 1024M; gcomm.thread_prio = ; gcs.fc_debug = 0; gcs.fc_factor = 1.0; gcs.fc_limit = 16; gcs.fc_master_slave = no; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; gcs.recv_q_hard_limit = 9223372036854775807; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = no; gmcast.listen_addr = tcp://0.0.0.0:4567; gmcast.mcast_addr = ; gmcast.mcast_ttl = 1; gmcast.peer_timeout = PT3S; gmcast.segment = 0; gmcast.time_wait = PT5S; gmcast.version = 0; ist.recv_addr = FIRST_NODE_IP; pc.announce_timeout = PT3S; pc.checksum = false; pc.ignore_quorum = false; pc.ignore_sb = false; pc.linger = PT20S; pc.npvo = false; pc.recovery = true; pc.version = 0; pc.wait_prim = true; pc.wait_prim_timeout = PT30S; pc.weight = 1; protonet.backend = asio; protonet.version = 0; repl.causal_read_timeout = PT30S; repl.commit_order = 3; repl.key_format = FLAT8; repl.max_ws_size = 2147483647; repl.proto_max = 10; socket.checksum = 2; socket.recv_buf_size = auto; socket.send_buf_size = auto;
wsrep_provider_vendor = Codership Oy 
wsrep_provider_version = 26.4.4(r4599)
wsrep_replicate_myisam = ON
wsrep_sst_auth = ********
wsrep_sst_method = mariabackup
wsrep_start_position = 353e0616-cb37-11ea-b614-be241cab877e:39442474

低于建议值：

table_open_cache = 10000
tmp_table_size      = 200M
max_heap_table_size = 200M
query_cache_size = 0        -- the high value you have can cause mysterious slowdowns
max_connections = 200
thread_cache_size = 20

对于硬盘驱动器，I/O设置非常好；你有SSD吗

有很多

SHOW

命令--每秒超过一个。也许某些监控工具过于激进

为什么会有这么多补助金

这是Galera星系群吗

详细信息和其他观察结果：

Innodb_dblwr_pages_written / Innodb_dblwr_writes = 2.28
aria_checkpoint_log_activity = 1.05e+6
aria_pagecache_buffer_size = 128MB
innodb_buffer_pool_chunk_size = 128MB
innodb_max_undo_log_size = 10MB
innodb_online_alter_log_max_size = 128MB
innodb_sort_buffer_size = 1.05e+6
innodb_spin_wait_delay = 4
lock_wait_timeout = 86,400
performance_schema_max_mutex_classes = 0
query_cache_limit = 524,288

Acl_column_grants = 216
Acl_database_grants = 385
Acl_table_grants = 1,877
Innodb_buffer_pool_pages_free = 1.07e+6
Innodb_num_open_files = 9,073
Memory_used_initial = 8.16e+8
Open_table_definitions = 4,278
Open_tables = 4,439
Performance_schema_file_instances_lost = 1,732
Performance_schema_mutex_classes_lost = 190
Performance_schema_table_handles_lost = 570
Qcache_free_blocks = 9,122
Qcache_total_blocks = 457,808
Tc_log_page_size = 4,096
Uptime - Uptime_since_flush_status = 141,130
aria_sort_buffer_size = 256.0MB
auto_increment_offset = 3
gtid_domain_id = 12,000
innodb_open_files = 116,660
max_heap_table_size = 1024MB
max_relay_log_size = 1024MB
min(max_heap_table_size, tmp_table_size) = 1024MB
performance_schema_events_stages_history_size = 20
performance_schema_events_statements_history_size = 20
performance_schema_events_waits_history_size = 20
performance_schema_max_cond_classes = 90
table_definition_cache = 58,863
table_open_cache / max_connections = 233
tmp_memory_table_size = 1024MB
wsrep_cluster_size = 3
wsrep_gtid_domain_id = 12,000
wsrep_local_bf_aborts = 107
wsrep_slave_threads = 32
wsrep_thread_count = 33

aria_recover_options = BACKUP,QUICK
disconnect_on_expired_password = OFF
gtid_ignore_duplicates = ON
gtid_strict_mode = ON
histogram_type = DOUBLE_PREC_HB
innodb_fast_shutdown = 1
myisam_stats_method = NULLS_UNEQUAL
old_alter_table = DEFAULT
opt_s__optimize_join_buffer_size = on
optimizer_trace = enabled=off
use_stat_tables = PREFERABLY_FOR_QUERIES
wsrep_cluster_status = Primary
wsrep_connected = ON
wsrep_debug = NONE
wsrep_gtid_mode = ON
wsrep_load_data_splitting = OFF
wsrep_provider = /usr/lib64/galera-4/libgalera_smm.so
wsrep_provider_name = Galera
wsrep_provider_options = base_dir = /var/lib/mysql/; base_host = FIRST_NODE_IP; base_port = 4567; cert.log_conflicts = no; cert.optimistic_pa = yes; debug = no; evs.auto_evict = 0; evs.causal_keepalive_period = PT1S; evs.debug_log_mask = 0x1; evs.delay_margin = PT1S; evs.delayed_keep_period = PT30S; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT15S; evs.info_log_mask = 0; evs.install_timeout = PT7.5S; evs.join_retrans_period = PT1S; evs.keepalive_period = PT1S; evs.max_install_timeouts = 3; evs.send_window = 4; evs.stats_report_period = PT1M; evs.suspect_timeout = PT5S; evs.use_aggregate = true; evs.user_send_window = 2; evs.version = 1; evs.view_forget_timeout = P1D; gcache.dir = /var/lib/mysql/; gcache.keep_pages_size = 0; gcache.mem_size = 0; gcache.name = galera.cache; gcache.page_size = 128M; gcache.recover = yes; gcache.size = 1024M; gcomm.thread_prio = ; gcs.fc_debug = 0; gcs.fc_factor = 1.0; gcs.fc_limit = 16; gcs.fc_master_slave = no; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; gcs.recv_q_hard_limit = 9223372036854775807; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = no; gmcast.listen_addr = tcp://0.0.0.0:4567; gmcast.mcast_addr = ; gmcast.mcast_ttl = 1; gmcast.peer_timeout = PT3S; gmcast.segment = 0; gmcast.time_wait = PT5S; gmcast.version = 0; ist.recv_addr = FIRST_NODE_IP; pc.announce_timeout = PT3S; pc.checksum = false; pc.ignore_quorum = false; pc.ignore_sb = false; pc.linger = PT20S; pc.npvo = false; pc.recovery = true; pc.version = 0; pc.wait_prim = true; pc.wait_prim_timeout = PT30S; pc.weight = 1; protonet.backend = asio; protonet.version = 0; repl.causal_read_timeout = PT30S; repl.commit_order = 3; repl.key_format = FLAT8; repl.max_ws_size = 2147483647; repl.proto_max = 10; socket.checksum = 2; socket.recv_buf_size = auto; socket.send_buf_size = auto;
wsrep_provider_vendor = Codership Oy 
wsrep_provider_version = 26.4.4(r4599)
wsrep_replicate_myisam = ON
wsrep_sst_auth = ********
wsrep_sst_method = mariabackup
wsrep_start_position = 353e0616-cb37-11ea-b614-be241cab877e:39442474

（密钥块使用*1024/密钥缓冲区大小）=48*1024/128M=0.04%

--密钥缓冲区使用的百分比。高水位线。 --降低键缓冲区大小（现在为134217728），以避免不必要的内存使用

（表\u打开\u缓存）=116660

--要缓存的表描述符的数量 --几百块通常是好的

（打开表格/表格打开表格缓存）=4439/116660=3.8%

--缓存使用率（打开表格+tmp表格） --可选择降低表\u打开\u缓存（现在为116660）

<代码>（NydBuffBuffryPoLoLeCub实例）＝24 < /COD>——对于大型RAM，考虑使用1-16缓冲池实例，不允许每1GB小于1GB。而且，不超过，比方说，CPU核心数量的两倍。 --建议不要超过16个。（10.5开始消失）

（innodb\u lru\u scan\u depth*innodb\u buffer\u pool\u instances）=1024*24=24576

——CPU使用率的指标。 --降低任何一个数字

（innodb\u lru\u扫描深度*innodb\u页面\u清理器）=1024*4=4096

——页面清理器每秒的工作量。 ——“NYNDB：PGEAGER清洁器：1000毫微米预期的循环……”可以通过降低LuRuxScLa深度来固定：考虑1000 / NynBudPaGiga清洁器（现在4）。还要检查交换

（innodb页面清理器/innodb缓冲池实例）=4/24=0.167

——innodb页面清理器 --建议将innodb_页面_清理器（现在为4）设置为innodb_缓冲区_池_实例（现在为24）（10.5开始消失）

（innodb\u lru\u扫描深度）=1024

--“InnoDB:page_cleaner:1000ms预期循环时间…”可通过降低lru_scan_深度来修复

（innodb\u io\u容量）=200

——刷新时，使用这么多IOPs。 --读数可能是缓慢的或尖细的

（Innodb\u buffer\u pool\u pages\u free/Innodb\u buffer\u pool\u pages\u total）=1065507/1538880=69.2%

——当前未使用的缓冲池的Pct --innodb_buffer_pool_size（现在是25769803776）是否大于所需

（innodb\u io\u容量\u最大/innodb\u io\u容量）=2000/200=10

--容量：最大/普通 --推荐2。最大值应该大约等于I/O子系统可以处理的IOPs。（如果驱动器类型未知，2000/200可能是合理的一对。）

（Innodb_buffer_pool_bytes_data/Innodb_buffer_pool_size）=764184164/24576M=29.7%

--百分比