10.21 Performance Schema Miscellaneous Tables

10.21.1 The component_scheduler_tasks Table

10.21.2 The error_log Table

10.21.3 The host_cache Table

10.21.4 The innodb_redo_log_files Table

10.21.5 The log_status Table

10.21.6 The performance_timers Table

10.21.7 The processlist Table

10.21.8 The threads Table

10.21.9 The tls_channel_status Table

10.21.10 The user_defined_functions Table

The following sections describe tables that do not fall into the table categories discussed in the preceding sections:

• component_scheduler_tasks: The current status of each scheduled task.

• error_log: The most recent events written to the error log.

• host_cache: Information from the internal host cache.

• innodb_redo_log_files: Information about InnoDB redo log files.

• log_status: Information about server logs for backup purposes.

• performance_timers: Which event timers are available.

• processlist: Information about server processes.

• threads: Information about server threads.

• tls_channel_status: TLS context properties for connection interfaces.

• user_defined_functions: Loadable functions registered by a component, plugin, or CREATE FUNCTION statement.