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https://dev.mysql.com/doc/refman/8.4/en/performance-schema-setup-objects-table.html
The setup_objects table controls whether the Performance Schema monitors particular objects. This table has a maximum size of 100 rows by default. To change the table size, modify the performance_schema_setup_objects_size system variable at server ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-setup-threads-table.html
It exposes thread class names and attributes: mysql> SELECT * FROM performance_schema.setup_threads\G *************************** 1. row *************************** NAME: thread/performance_schema/setup ENABLED: YES HISTORY: YES PROPERTIES: ...
https://dev.mysql.com/doc/refman/8.4/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/8.4/en/performance-schema-stage-summary-tables.html
The Performance Schema maintains tables for collecting current and recent stage events, and aggregates that information in summary tables. Section 29.12.5, “Performance Schema Stage Event Tables” describes the events on which stage summaries ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-startup-configuration.html
To use the MySQL Performance Schema, it must be enabled at server startup to enable event collection to occur. To enable or disable it explicitly, start the server with the performance_schema variable set to an appropriate value. For example, use ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-statement-histogram-summary-tables.html
The Performance Schema maintains statement event summary tables that contain information about minimum, maximum, and average statement latency (see Section 29.12.20.3, “Statement Summary Tables”). To permit assessment at a more fine-grained ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-status-variable-tables.html
The MySQL server maintains many status variables that provide information about its operation (see Section 7.1.10, “Server Status Variables”). Status variable information is available in these Performance Schema tables: global_status: Global ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-tls-channel-status-table.html
Connection interface TLS properties are set at server startup, and can be updated at runtime using the ALTER INSTANCE RELOAD TLS statement. The tls_channel_status table provides information about connection interface TLS properties: mysql> SELECT * ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-tp-connections-table.html
The tp_connections table contains one row per connection managed by the Thread Pool plugin. Each row provides information about the current state of a thread pool connection. The tp_connections table contains the following rows: CONNECTION_ID The ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-transaction-summary-tables.html
The Performance Schema maintains tables for collecting current and recent transaction events, and aggregates that information in summary tables. Section 29.12.7, “Performance Schema Transaction Tables” describes the events on which transaction ...