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https://dev.mysql.com/doc/refman/8.4/en/performance-schema-ndb-cluster-tables.html
This is done by default in the background at regular intervals as determined by the ndb_metadata_check_interval system variable, unless disabled using ndb_metadata_check or overridden by setting ndb_metadata_sync. The following table shows all ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-prepared-statements-instances-table.html
To avoid resource leaks, removal occurs even if the prepared statement instruments described previously are disabled. The Performance Schema provides instrumentation for prepared statements, for which there are two protocols: The binary protocol.
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-processlist-table.html
This is true by default; it is controlled using the DISABLE_PSI_THREAD CMake option. With that configuration satisfied, performance_schema_show_processlist enables or disables the alternative SHOW PROCESSLIST implementation. The MySQL process list ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-query-profiling.html
The following example demonstrates how to use Performance Schema statement events and stage events to retrieve data comparable to profiling information provided by SHOW PROFILES and SHOW PROFILE statements. The setup_actors table can be used to ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-quick-start.html
To enable or disable it explicitly, start the server with the performance_schema variable set to an appropriate value. This section briefly introduces the Performance Schema with examples that show how to use it. For additional examples, see ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-replication-applier-status-by-coordinator-table.html
When the Performance Schema is disabled, local timing information is not collected, so the fields showing the start and end timestamps for buffered transactions are zero. For a multithreaded replica, the replica uses multiple worker threads and a ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-replication-applier-status-by-worker-table.html
When the Performance Schema is disabled, local timing information is not collected, so the fields showing the start and end timestamps for applied transactions are zero. This table provides details of the transactions handled by applier threads on ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-replication-connection-status-table.html
When the Performance Schema is disabled, local timing information is not collected, so the fields showing the start and end timestamps for queued transactions are zero. This table shows the current status of the I/O thread that handles the ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-replication-group-configuration-version-table.html
Whenever a member action is enabled or disabled using the group_replication_enable_member_action() and group_replication_disable_member_action() functions, the version number is incremented. This table displays the version of the member actions ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-replication-group-member-actions-table.html
Member actions can be enabled using the group_replication_enable_member_action() function and disabled using the group_replication_disable_member_action() function. This table lists the member actions that are included in the member actions ...