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https://dev.mysql.com/doc/refman/5.7/en/sys-waits-by-host-by-latency.html
max_latency The maximum single wait time of timed occurrences of the event for the host. total_latency The total wait time of timed occurrences of the event for the host. avg_latency The average wait time per timed occurrence of the event for the ...
https://dev.mysql.com/doc/refman/5.7/en/sys-waits-by-user-by-latency.html
max_latency The maximum single wait time of timed occurrences of the event for the user. total_latency The total wait time of timed occurrences of the event for the user. avg_latency The average wait time per timed occurrence of the event for the ...
https://dev.mysql.com/doc/refman/5.7/en/sys-waits-global-by-latency.html
max_latency The maximum single wait time of timed occurrences of the event. total_latency The total wait time of timed occurrences of the event. avg_latency The average wait time per timed occurrence of the event. The waits_global_by_latency and ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-cpustat-1sec.html
The cpustat-1sec table provides raw, per-thread CPU data obtained each second for each thread running in the NDB kernel. Like cpustat_50ms and cpustat_20sec, this table shows 20 measurement sets per thread, each referencing a period of the named ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-cpustat-20sec.html
The cpustat_20sec table provides raw, per-thread CPU data obtained each 20 seconds, for each thread running in the NDB kernel. Like cpustat_50ms and cpustat_1sec, this table shows 20 measurement sets per thread, each referencing a period of the ...
https://dev.mysql.com/doc/refman/5.7/en/myisam-crash-recovery.html
If you can be certain that no one can access the tables through mysqld while you run myisamchk, you have only to execute mysqladmin flush-tables before you start checking the tables. If you run myisamchk to check tables that mysqld is updating at ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndbinfo-select-all.html
--delay=seconds Command-Line Format --delay=# Type Numeric Default Value 5 Minimum Value 0 Maximum Value MAX_INT This option sets the number of seconds to wait between executing loops. --loops=number, -l number Command-Line Format --loops=# Type ...
https://dev.mysql.com/doc/refman/5.7/en/keyring-functions-general-purpose.html
Otherwise, an error occurs: ERROR 1123 (HY000): Can't initialize function 'keyring_key_generate'; The user is not privileged to execute this function. Attempts to use the functions without the keyring_udf plugin result in an error. Otherwise, an ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-online-ddl-failure-conditions.html
The operation takes a long time and concurrent DML modifies the table so much that the size of the temporary online log exceeds the value of the innodb_online_alter_log_max_size configuration option. A timeout occurs while waiting for an exclusive ... The failure of an online DDL operation is typically due to one of the following conditions: An ALGORITHM clause specifies an algorithm that is not compatible with the particular type of DDL operation or storage ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-limitations-disk-data.html
Disk data objects are subject to the following maximums and minimums: Maximum number of tablespaces: 232 (4294967296) Maximum number of data files per tablespace: 216 (65536) The minimum and maximum possible sizes of extents for tablespace data ...