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https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-stages-current-table.html
END_EVENT_ID This column is set to NULL when the event starts and updated to the thread current event number when the event ends. The table stores one row per thread showing the current status of the thread's most recent monitored stage event, so ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-statements-current-table.html
END_EVENT_ID This column is set to NULL when the event starts and updated to the thread current event number when the event ends. The table stores one row per thread showing the current status of the thread's most recent monitored statement event, ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-waits-current-table.html
END_EVENT_ID This column is set to NULL when the event starts and updated to the thread current event number when the event ends. The table stores one row per thread showing the current status of the thread's most recent monitored wait event, so ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-filtering.html
This is done by modifying Performance Schema configuration so that only certain types of events are collected from producers, and collected events update only certain consumers. Events are processed in a producer/consumer fashion: Instrumented code ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-optimization.html
This implementation provides two important benefits: It entirely avoids the maintenance cost normally incurred for tables that undergo frequent updates. Applications that monitor databases may make frequent use of Performance Schema tables. To ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-asynchronous-connection-failover-managed-table.html
When you add a group member to the source list and define it as part of a managed group, the asynchronous connection failover mechanism updates the source list to keep it in line with membership changes, adding and removing group members ... This ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-group-member-stats-table.html
The replication_group_member_stats table has these columns: CHANNEL_NAME Name of the Group Replication channel VIEW_ID Current view identifier for this group. This has a different value for each member in the group. This also serves as a key because ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-runtime-configuration.html
If you have the UPDATE privilege, you can change Performance Schema operation by modifying setup tables to affect how monitoring occurs. Specific Performance Schema features can be enabled at runtime to control which types of event collection occur. For additional details about these tables, see Section 29.12.2, “Performance Schema Setup ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-setup-objects-table.html
For existing rows, only the ENABLED and TIMED columns can be modified, by users with the UPDATE privilege on the table. The setup_objects table controls whether the Performance Schema monitors particular objects. This table has a maximum size of ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-setup-tables.html
For this reason, some columns in these tables can be changed if you have the UPDATE privilege. The setup tables provide information about the current instrumentation and enable the monitoring configuration to be changed. The use of tables rather ...