### 27.12.21 Performance Schema Miscellaneous Tables

[27.12.21.1 The error\_log Table](performance-schema-error-log-table.html)
[27.12.21.2 The host\_cache Table](performance-schema-host-cache-table.html)
[27.12.21.3 The log\_status Table](performance-schema-log-status-table.html)
[27.12.21.4 The performance\_timers Table](performance-schema-performance-timers-table.html)
[27.12.21.5 The processlist Table](performance-schema-processlist-table.html)
[27.12.21.6 The threads Table](performance-schema-threads-table.html)
[27.12.21.7 The tls\_channel\_status Table](performance-schema-tls-channel-status-table.html)
[27.12.21.8 The user\_defined\_functions Table](performance-schema-user-defined-functions-table.html)

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

* [`error_log`](performance-schema-error-log-table.html): The most recent events written to the error log.

* [`host_cache`](performance-schema-host-cache-table.html): Information from the internal host cache.

* [`log_status`](performance-schema-log-status-table.html): Information about server logs for backup purposes.

* [`performance_timers`](performance-schema-performance-timers-table.html): Which event timers are available.

* [`threads`](performance-schema-threads-table.html): Information about server threads.

* [`tls_channel_status`](performance-schema-tls-channel-status-table.html): TLS context properties for connection interfaces.

* [`user_defined_functions`](performance-schema-user-defined-functions-table.html): Loadable functions registered by a component, plugin, or [`CREATE FUNCTION`](create-function-loadable.html) statement.

