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https://dev.mysql.com/doc/refman/8.0/en/performance-schema-instrument-naming.html
An instrument name consists of a sequence of elements separated by '/' characters. Example names: wait/io/file/myisam/log wait/io/file/mysys/charset wait/lock/table/sql/handler wait/synch/cond/mysys/COND_alarm ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-performance-timers-table.html
For an explanation of how event timing occurs, see Section 29.4.1, “Performance Schema Event Timing”. For a cycle timer, the frequency is generally related to the CPU speed. For example, on a system with a 2.4GHz processor, the CYCLE may be ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-processlist-table.html
The MySQL process list indicates the operations currently being performed by the set of threads executing within the server. For a comparison of this table with other sources, see Sources of Process Information. If you have the PROCESS privilege, ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-socket-instances-table.html
The socket_instances table provides a real-time snapshot of the active connections to the MySQL server. The table contains one row per TCP/IP or Unix socket file connection. Information available in this table provides a real-time snapshot of the ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-statement-summary-tables.html
The Performance Schema maintains tables for collecting current and recent statement events, and aggregates that information in summary tables. Section 29.12.6, “Performance Schema Statement Event Tables” describes the events on which statement ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-system-variables.html
The Performance Schema automatically sizes the values of several of its parameters at server startup if they are not set explicitly. Performance Schema system variables have the following meanings: performance_schema Command-Line Format ...
https://dev.mysql.com/doc/refman/8.0/en/replication-gtids-failover.html
There are a number of techniques when using MySQL Replication with Global Transaction Identifiers (GTIDs) for provisioning a new replica which can then be used for scaleout, being promoted to source as necessary for failover. Each identifier ...
https://dev.mysql.com/doc/refman/8.0/en/replication-threads-monitor-main.html
The SHOW PROCESSLIST statement provides information that tells you what is happening on the source and on the replica regarding replication. For information on source states, see Section 10.14.4, “Replication Source Thread States”. For replica ...
https://dev.mysql.com/doc/refman/8.0/en/scheduler-component.html
Note The scheduler component is included in MySQL Enterprise Edition, a commercial product. As of MySQL 8.0.34, the scheduler component provides an implementation of the mysql_scheduler service that enables applications, components, or plugins to ...
https://dev.mysql.com/doc/refman/8.0/en/show-table-status.html
SHOW TABLE STATUS [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW TABLE STATUS works likes SHOW TABLES, but provides a lot of information about each non-TEMPORARY table. You can also get this list using the mysqlshow --status db_name ...