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26.12.1 Performance Schema Table Index

The following table lists each Performance Schema table and provides a short description of each one.

Table 26.1 Performance Schema Tables

Table Name	Description
`accounts`	Connection statistics per client account
`cond_instances`	synchronization object instances
`data_lock_waits`	Data lock wait relationships
`data_locks`	Data locks held and requested
`events_errors_summary_by_account_by_error`	Errors per error code and account
`events_errors_summary_by_host_by_error`	Errors per error code and host
`events_errors_summary_by_thread_by_error`	Errors per error code and host
`events_errors_summary_by_user_by_error`	Errors per error code and host
`events_errors_summary_global_by_error`	Errors per error code
`events_stages_current`	Current stage events
`events_stages_history`	Most recent stage events per thread
`events_stages_history_long`	Most recent stage events overall
`events_stages_summary_by_account_by_event_name`	Stage events per account and event name
`events_stages_summary_by_host_by_event_name`	Stage events per host name and event name
`events_stages_summary_by_thread_by_event_name`	Stage waits per thread and event name
`events_stages_summary_by_user_by_event_name`	Stage events per user name and event name
`events_stages_summary_global_by_event_name`	Stage waits per event name
`events_statements_current`	Current statement events
`events_statements_histogram_by_digest`	Statement histograms per schema and digest value
`events_statements_histogram_global`	Statement histogram summarized globally
`events_statements_history`	Most recent statement events per thread
`events_statements_history_long`	Most recent statement events overall
`events_statements_summary_by_account_by_event_name`	Statement events per account and event name
`events_statements_summary_by_digest`	Statement events per schema and digest value
`events_statements_summary_by_host_by_event_name`	Statement events per host name and event name
`events_statements_summary_by_program`	Statement events per stored program
`events_statements_summary_by_thread_by_event_name`	Statement events per thread and event name
`events_statements_summary_by_user_by_event_name`	Statement events per user name and event name
`events_statements_summary_global_by_event_name`	Statement events per event name
`events_transactions_current`	Current transaction events
`events_transactions_history`	Most recent transaction events per thread
`events_transactions_history_long`	Most recent transaction events overall
`events_transactions_summary_by_account_by_event_name`	Transaction events per account and event name
`events_transactions_summary_by_host_by_event_name`	Transaction events per host name and event name
`events_transactions_summary_by_thread_by_event_name`	Transaction events per thread and event name
`events_transactions_summary_by_user_by_event_name`	Transaction events per user name and event name
`events_transactions_summary_global_by_event_name`	Transaction events per event name
`events_waits_current`	Current wait events
`events_waits_history`	Most recent wait events per thread
`events_waits_history_long`	Most recent wait events overall
`events_waits_summary_by_account_by_event_name`	Wait events per account and event name
`events_waits_summary_by_host_by_event_name`	Wait events per host name and event name
`events_waits_summary_by_instance`	Wait events per instance
`events_waits_summary_by_thread_by_event_name`	Wait events per thread and event name
`events_waits_summary_by_user_by_event_name`	Wait events per user name and event name
`events_waits_summary_global_by_event_name`	Wait events per event name
`file_instances`	File instances
`file_summary_by_event_name`	File events per event name
`file_summary_by_instance`	File events per file instance
`global_status`	Global status variables
`global_variables`	Global system variables
`host_cache`	Information from the internal host cache
`hosts`	Connection statistics per client host name
`keyring_keys`	Metadata for keyring keys
`log_status`	Information about server logs for backup purposes
`memory_summary_by_account_by_event_name`	Memory operations per account and event name
`memory_summary_by_host_by_event_name`	Memory operations per host and event name
`memory_summary_by_thread_by_event_name`	Memory operations per thread and event name
`memory_summary_by_user_by_event_name`	Memory operations per user and event name
`memory_summary_global_by_event_name`	Memory operations globally per event name
`metadata_locks`	Metadata locks and lock requests
`mutex_instances`	Mutex synchronization object instances
`objects_summary_global_by_type`	Object summaries
`performance_timers`	Which event timers are available
`persisted_variables`	Contents of `mysqld-auto.cnf` file
`prepared_statements_instances`	Prepared statement instances and statistics
`replication_applier_configuration`	Configuration parameters for the transaction applier on the slave
`replication_applier_status`	Current status of the transaction applier on the slave
`replication_applier_status_by_coordinator`	SQL or coordinator thread applier status
`replication_applier_status_by_worker`	Worker thread applier status (empty unless slave is multithreaded)
`replication_connection_configuration`	Configuration parameters for connecting to the master
`replication_connection_status`	Current status of the connection to the master
`rwlock_instances`	Lock synchronization object instances
`session_account_connect_attrs`	Connection attributes per for the current session
`session_connect_attrs`	Connection attributes for all sessions
`session_status`	Status variables for current session
`session_variables`	System variables for current session
`setup_actors`	How to initialize monitoring for new foreground threads
`setup_consumers`	Consumers for which event information can be stored
`setup_instruments`	Classes of instrumented objects for which events can be collected
`setup_objects`	Which objects should be monitored
`setup_threads`	Instrumented thread names and attributes
`socket_instances`	Active connection instances
`socket_summary_by_event_name`	Socket waits and I/O per event name
`socket_summary_by_instance`	Socket waits and I/O per instance
`status_by_account`	Session status variables per account
`status_by_host`	Session status variables per host name
`status_by_thread`	Session status variables per session
`status_by_user`	Session status variables per user name
`table_handles`	Table locks and lock requests
`table_io_waits_summary_by_index_usage`	Table I/O waits per index
`table_io_waits_summary_by_table`	Table I/O waits per table
`table_lock_waits_summary_by_table`	Table lock waits per table
`threads`	Information about server threads
`tp_thread_group_state`	Information about thread pool thread group states
`tp_thread_group_stats`	Thread group statistics
`tp_thread_state`	Information about thread pool thread states
`user_defined_functions`	Registered user-defined functions
`user_variables_by_thread`	User-defined variables per thread
`users`	Connection statistics per client user name
`variables_by_thread`	Session system variables per session
`variables_info`	How system variables were most recently set

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