show databases;
Database
information_schema
mtr
mysql
performance_schema
test
select count(*) from performance_schema.performance_timers;
count(*)
5
select count(*) from performance_schema.setup_consumers;
count(*)
12
select count(*) > 3 from performance_schema.setup_instruments;
count(*) > 3
0
select count(*) from performance_schema.setup_timers;
count(*)
4
select * from performance_schema.accounts;
select * from performance_schema.cond_instances;
select * from performance_schema.events_stages_current;
select * from performance_schema.events_stages_history;
select * from performance_schema.events_stages_history_long;
select * from performance_schema.events_stages_summary_by_account_by_event_name;
select * from performance_schema.events_stages_summary_by_host_by_event_name;
select * from performance_schema.events_stages_summary_by_thread_by_event_name;
select * from performance_schema.events_stages_summary_by_user_by_event_name;
select * from performance_schema.events_stages_summary_global_by_event_name;
select * from performance_schema.events_statements_current;
select * from performance_schema.events_statements_history;
select * from performance_schema.events_statements_history_long;
select * from performance_schema.events_statements_summary_by_account_by_event_name;
select * from performance_schema.events_statements_summary_by_digest;
select * from performance_schema.events_statements_summary_by_host_by_event_name;
select * from performance_schema.events_statements_summary_by_thread_by_event_name;
select * from performance_schema.events_statements_summary_by_user_by_event_name;
select * from performance_schema.events_statements_summary_global_by_event_name;
select * from performance_schema.events_waits_current;
select * from performance_schema.events_waits_history;
select * from performance_schema.events_waits_history_long;
select * from performance_schema.events_waits_summary_by_account_by_event_name;
select * from performance_schema.events_waits_summary_by_host_by_event_name;
select * from performance_schema.events_waits_summary_by_instance;
select * from performance_schema.events_waits_summary_by_thread_by_event_name;
select * from performance_schema.events_waits_summary_by_user_by_event_name;
select * from performance_schema.events_waits_summary_global_by_event_name;
select * from performance_schema.file_instances;
select * from performance_schema.file_summary_by_event_name;
select * from performance_schema.file_summary_by_instance;
select * from performance_schema.host_cache;
select * from performance_schema.hosts;
select * from performance_schema.mutex_instances;
select * from performance_schema.objects_summary_global_by_type;
select * from performance_schema.performance_timers;
select * from performance_schema.rwlock_instances;
select * from performance_schema.session_account_connect_attrs;
select * from performance_schema.session_connect_attrs;
select * from performance_schema.setup_actors;
select * from performance_schema.setup_consumers;
select * from performance_schema.setup_instruments;
select * from performance_schema.setup_objects;
select * from performance_schema.setup_timers;
select * from performance_schema.socket_instances;
select * from performance_schema.socket_summary_by_instance;
select * from performance_schema.socket_summary_by_event_name;
select * from performance_schema.table_io_waits_summary_by_index_usage;
select * from performance_schema.table_io_waits_summary_by_table;
select * from performance_schema.table_lock_waits_summary_by_table;
select * from performance_schema.threads;
select * from performance_schema.users;
show variables where
`Variable_name` != "performance_schema_max_statement_classes" and
`Variable_name` like "performance_schema%";
Variable_name	Value
performance_schema	ON
performance_schema_accounts_size	0
performance_schema_digests_size	200
performance_schema_events_stages_history_long_size	0
performance_schema_events_stages_history_size	0
performance_schema_events_statements_history_long_size	0
performance_schema_events_statements_history_size	0
performance_schema_events_waits_history_long_size	0
performance_schema_events_waits_history_size	0
performance_schema_hosts_size	0
performance_schema_max_cond_classes	0
performance_schema_max_cond_instances	0
performance_schema_max_digest_length	1024
performance_schema_max_file_classes	0
performance_schema_max_file_handles	0
performance_schema_max_file_instances	0
performance_schema_max_mutex_classes	0
performance_schema_max_mutex_instances	0
performance_schema_max_rwlock_classes	0
performance_schema_max_rwlock_instances	0
performance_schema_max_socket_classes	0
performance_schema_max_socket_instances	0
performance_schema_max_stage_classes	0
performance_schema_max_table_handles	0
performance_schema_max_table_instances	0
performance_schema_max_thread_classes	0
performance_schema_max_thread_instances	0
performance_schema_session_connect_attrs_size	0
performance_schema_setup_actors_size	0
performance_schema_setup_objects_size	0
performance_schema_users_size	0
show engine PERFORMANCE_SCHEMA status;
show status like "performance_schema%";
show variables like "performance_schema%";
Variable_name	Value
performance_schema	ON
performance_schema_accounts_size	0
performance_schema_digests_size	200
performance_schema_events_stages_history_long_size	0
performance_schema_events_stages_history_size	0
performance_schema_events_statements_history_long_size	0
performance_schema_events_statements_history_size	0
performance_schema_events_waits_history_long_size	0
performance_schema_events_waits_history_size	0
performance_schema_hosts_size	0
performance_schema_max_cond_classes	0
performance_schema_max_cond_instances	0
performance_schema_max_digest_length	1024
performance_schema_max_file_classes	0
performance_schema_max_file_handles	0
performance_schema_max_file_instances	0
performance_schema_max_mutex_classes	0
performance_schema_max_mutex_instances	0
performance_schema_max_rwlock_classes	0
performance_schema_max_rwlock_instances	0
performance_schema_max_socket_classes	0
performance_schema_max_socket_instances	0
performance_schema_max_stage_classes	0
performance_schema_max_statement_classes	0
performance_schema_max_table_handles	0
performance_schema_max_table_instances	0
performance_schema_max_thread_classes	0
performance_schema_max_thread_instances	0
performance_schema_session_connect_attrs_size	0
performance_schema_setup_actors_size	0
performance_schema_setup_objects_size	0
performance_schema_users_size	0
select * from performance_schema.setup_instruments;
NAME	ENABLED	TIMED
wait/io/table/sql/handler	YES	YES
wait/lock/table/sql/handler	YES	YES
idle	YES	YES
select TIMER_NAME from performance_schema.performance_timers;
TIMER_NAME
CYCLE
NANOSECOND
MICROSECOND
MILLISECOND
TICK
select * from performance_schema.setup_consumers;
NAME	ENABLED
events_stages_current	YES
events_stages_history	YES
events_stages_history_long	YES
events_statements_current	YES
events_statements_history	YES
events_statements_history_long	YES
events_waits_current	YES
events_waits_history	YES
events_waits_history_long	YES
global_instrumentation	YES
thread_instrumentation	YES
statements_digest	YES
select NAME from performance_schema.setup_timers;
NAME
idle
wait
stage
statement
select * from performance_schema.accounts;
USER	HOST	CURRENT_CONNECTIONS	TOTAL_CONNECTIONS
select * from performance_schema.cond_instances;
NAME	OBJECT_INSTANCE_BEGIN
select * from performance_schema.events_stages_current;
THREAD_ID	EVENT_ID	END_EVENT_ID	EVENT_NAME	SOURCE	TIMER_START	TIMER_END	TIMER_WAIT	NESTING_EVENT_ID	NESTING_EVENT_TYPE
select * from performance_schema.events_stages_history;
THREAD_ID	EVENT_ID	END_EVENT_ID	EVENT_NAME	SOURCE	TIMER_START	TIMER_END	TIMER_WAIT	NESTING_EVENT_ID	NESTING_EVENT_TYPE
select * from performance_schema.events_stages_history_long;
THREAD_ID	EVENT_ID	END_EVENT_ID	EVENT_NAME	SOURCE	TIMER_START	TIMER_END	TIMER_WAIT	NESTING_EVENT_ID	NESTING_EVENT_TYPE
select * from performance_schema.events_stages_summary_by_account_by_event_name;
USER	HOST	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_stages_summary_by_host_by_event_name;
HOST	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_stages_summary_by_thread_by_event_name;
THREAD_ID	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_stages_summary_by_user_by_event_name;
USER	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_stages_summary_global_by_event_name;
EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_statements_current;
THREAD_ID	EVENT_ID	END_EVENT_ID	EVENT_NAME	SOURCE	TIMER_START	TIMER_END	TIMER_WAIT	LOCK_TIME	SQL_TEXT	DIGEST	DIGEST_TEXT	CURRENT_SCHEMA	OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	OBJECT_INSTANCE_BEGIN	MYSQL_ERRNO	RETURNED_SQLSTATE	MESSAGE_TEXT	ERRORS	WARNINGS	ROWS_AFFECTED	ROWS_SENT	ROWS_EXAMINED	CREATED_TMP_DISK_TABLES	CREATED_TMP_TABLES	SELECT_FULL_JOIN	SELECT_FULL_RANGE_JOIN	SELECT_RANGE	SELECT_RANGE_CHECK	SELECT_SCAN	SORT_MERGE_PASSES	SORT_RANGE	SORT_ROWS	SORT_SCAN	NO_INDEX_USED	NO_GOOD_INDEX_USED	NESTING_EVENT_ID	NESTING_EVENT_TYPE
select * from performance_schema.events_statements_history;
THREAD_ID	EVENT_ID	END_EVENT_ID	EVENT_NAME	SOURCE	TIMER_START	TIMER_END	TIMER_WAIT	LOCK_TIME	SQL_TEXT	DIGEST	DIGEST_TEXT	CURRENT_SCHEMA	OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	OBJECT_INSTANCE_BEGIN	MYSQL_ERRNO	RETURNED_SQLSTATE	MESSAGE_TEXT	ERRORS	WARNINGS	ROWS_AFFECTED	ROWS_SENT	ROWS_EXAMINED	CREATED_TMP_DISK_TABLES	CREATED_TMP_TABLES	SELECT_FULL_JOIN	SELECT_FULL_RANGE_JOIN	SELECT_RANGE	SELECT_RANGE_CHECK	SELECT_SCAN	SORT_MERGE_PASSES	SORT_RANGE	SORT_ROWS	SORT_SCAN	NO_INDEX_USED	NO_GOOD_INDEX_USED	NESTING_EVENT_ID	NESTING_EVENT_TYPE
select * from performance_schema.events_statements_history_long;
THREAD_ID	EVENT_ID	END_EVENT_ID	EVENT_NAME	SOURCE	TIMER_START	TIMER_END	TIMER_WAIT	LOCK_TIME	SQL_TEXT	DIGEST	DIGEST_TEXT	CURRENT_SCHEMA	OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	OBJECT_INSTANCE_BEGIN	MYSQL_ERRNO	RETURNED_SQLSTATE	MESSAGE_TEXT	ERRORS	WARNINGS	ROWS_AFFECTED	ROWS_SENT	ROWS_EXAMINED	CREATED_TMP_DISK_TABLES	CREATED_TMP_TABLES	SELECT_FULL_JOIN	SELECT_FULL_RANGE_JOIN	SELECT_RANGE	SELECT_RANGE_CHECK	SELECT_SCAN	SORT_MERGE_PASSES	SORT_RANGE	SORT_ROWS	SORT_SCAN	NO_INDEX_USED	NO_GOOD_INDEX_USED	NESTING_EVENT_ID	NESTING_EVENT_TYPE
select * from performance_schema.events_statements_summary_by_account_by_event_name;
USER	HOST	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT	SUM_LOCK_TIME	SUM_ERRORS	SUM_WARNINGS	SUM_ROWS_AFFECTED	SUM_ROWS_SENT	SUM_ROWS_EXAMINED	SUM_CREATED_TMP_DISK_TABLES	SUM_CREATED_TMP_TABLES	SUM_SELECT_FULL_JOIN	SUM_SELECT_FULL_RANGE_JOIN	SUM_SELECT_RANGE	SUM_SELECT_RANGE_CHECK	SUM_SELECT_SCAN	SUM_SORT_MERGE_PASSES	SUM_SORT_RANGE	SUM_SORT_ROWS	SUM_SORT_SCAN	SUM_NO_INDEX_USED	SUM_NO_GOOD_INDEX_USED
select * from performance_schema.events_statements_summary_by_host_by_event_name;
HOST	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT	SUM_LOCK_TIME	SUM_ERRORS	SUM_WARNINGS	SUM_ROWS_AFFECTED	SUM_ROWS_SENT	SUM_ROWS_EXAMINED	SUM_CREATED_TMP_DISK_TABLES	SUM_CREATED_TMP_TABLES	SUM_SELECT_FULL_JOIN	SUM_SELECT_FULL_RANGE_JOIN	SUM_SELECT_RANGE	SUM_SELECT_RANGE_CHECK	SUM_SELECT_SCAN	SUM_SORT_MERGE_PASSES	SUM_SORT_RANGE	SUM_SORT_ROWS	SUM_SORT_SCAN	SUM_NO_INDEX_USED	SUM_NO_GOOD_INDEX_USED
select * from performance_schema.events_statements_summary_by_thread_by_event_name;
THREAD_ID	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT	SUM_LOCK_TIME	SUM_ERRORS	SUM_WARNINGS	SUM_ROWS_AFFECTED	SUM_ROWS_SENT	SUM_ROWS_EXAMINED	SUM_CREATED_TMP_DISK_TABLES	SUM_CREATED_TMP_TABLES	SUM_SELECT_FULL_JOIN	SUM_SELECT_FULL_RANGE_JOIN	SUM_SELECT_RANGE	SUM_SELECT_RANGE_CHECK	SUM_SELECT_SCAN	SUM_SORT_MERGE_PASSES	SUM_SORT_RANGE	SUM_SORT_ROWS	SUM_SORT_SCAN	SUM_NO_INDEX_USED	SUM_NO_GOOD_INDEX_USED
select * from performance_schema.events_statements_summary_by_user_by_event_name;
USER	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT	SUM_LOCK_TIME	SUM_ERRORS	SUM_WARNINGS	SUM_ROWS_AFFECTED	SUM_ROWS_SENT	SUM_ROWS_EXAMINED	SUM_CREATED_TMP_DISK_TABLES	SUM_CREATED_TMP_TABLES	SUM_SELECT_FULL_JOIN	SUM_SELECT_FULL_RANGE_JOIN	SUM_SELECT_RANGE	SUM_SELECT_RANGE_CHECK	SUM_SELECT_SCAN	SUM_SORT_MERGE_PASSES	SUM_SORT_RANGE	SUM_SORT_ROWS	SUM_SORT_SCAN	SUM_NO_INDEX_USED	SUM_NO_GOOD_INDEX_USED
select * from performance_schema.events_statements_summary_global_by_event_name;
EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT	SUM_LOCK_TIME	SUM_ERRORS	SUM_WARNINGS	SUM_ROWS_AFFECTED	SUM_ROWS_SENT	SUM_ROWS_EXAMINED	SUM_CREATED_TMP_DISK_TABLES	SUM_CREATED_TMP_TABLES	SUM_SELECT_FULL_JOIN	SUM_SELECT_FULL_RANGE_JOIN	SUM_SELECT_RANGE	SUM_SELECT_RANGE_CHECK	SUM_SELECT_SCAN	SUM_SORT_MERGE_PASSES	SUM_SORT_RANGE	SUM_SORT_ROWS	SUM_SORT_SCAN	SUM_NO_INDEX_USED	SUM_NO_GOOD_INDEX_USED
select * from performance_schema.events_waits_current;
THREAD_ID	EVENT_ID	END_EVENT_ID	EVENT_NAME	SOURCE	TIMER_START	TIMER_END	TIMER_WAIT	SPINS	OBJECT_SCHEMA	OBJECT_NAME	INDEX_NAME	OBJECT_TYPE	OBJECT_INSTANCE_BEGIN	NESTING_EVENT_ID	NESTING_EVENT_TYPE	OPERATION	NUMBER_OF_BYTES	FLAGS
select * from performance_schema.events_waits_history;
THREAD_ID	EVENT_ID	END_EVENT_ID	EVENT_NAME	SOURCE	TIMER_START	TIMER_END	TIMER_WAIT	SPINS	OBJECT_SCHEMA	OBJECT_NAME	INDEX_NAME	OBJECT_TYPE	OBJECT_INSTANCE_BEGIN	NESTING_EVENT_ID	NESTING_EVENT_TYPE	OPERATION	NUMBER_OF_BYTES	FLAGS
select * from performance_schema.events_waits_history_long;
THREAD_ID	EVENT_ID	END_EVENT_ID	EVENT_NAME	SOURCE	TIMER_START	TIMER_END	TIMER_WAIT	SPINS	OBJECT_SCHEMA	OBJECT_NAME	INDEX_NAME	OBJECT_TYPE	OBJECT_INSTANCE_BEGIN	NESTING_EVENT_ID	NESTING_EVENT_TYPE	OPERATION	NUMBER_OF_BYTES	FLAGS
select * from performance_schema.events_waits_summary_by_account_by_event_name;
USER	HOST	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_waits_summary_by_host_by_event_name;
HOST	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_waits_summary_by_instance;
EVENT_NAME	OBJECT_INSTANCE_BEGIN	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_waits_summary_by_thread_by_event_name;
THREAD_ID	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_waits_summary_by_user_by_event_name;
USER	EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.events_waits_summary_global_by_event_name;
EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
wait/io/table/sql/handler	0	0	0	0	0
wait/lock/table/sql/handler	0	0	0	0	0
idle	0	0	0	0	0
select * from performance_schema.file_instances;
FILE_NAME	EVENT_NAME	OPEN_COUNT
select * from performance_schema.file_summary_by_event_name;
EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT	COUNT_READ	SUM_TIMER_READ	MIN_TIMER_READ	AVG_TIMER_READ	MAX_TIMER_READ	SUM_NUMBER_OF_BYTES_READ	COUNT_WRITE	SUM_TIMER_WRITE	MIN_TIMER_WRITE	AVG_TIMER_WRITE	MAX_TIMER_WRITE	SUM_NUMBER_OF_BYTES_WRITE	COUNT_MISC	SUM_TIMER_MISC	MIN_TIMER_MISC	AVG_TIMER_MISC	MAX_TIMER_MISC
select * from performance_schema.file_summary_by_instance;
FILE_NAME	EVENT_NAME	OBJECT_INSTANCE_BEGIN	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT	COUNT_READ	SUM_TIMER_READ	MIN_TIMER_READ	AVG_TIMER_READ	MAX_TIMER_READ	SUM_NUMBER_OF_BYTES_READ	COUNT_WRITE	SUM_TIMER_WRITE	MIN_TIMER_WRITE	AVG_TIMER_WRITE	MAX_TIMER_WRITE	SUM_NUMBER_OF_BYTES_WRITE	COUNT_MISC	SUM_TIMER_MISC	MIN_TIMER_MISC	AVG_TIMER_MISC	MAX_TIMER_MISC
select * from performance_schema.session_account_connect_attrs;
PROCESSLIST_ID	ATTR_NAME	ATTR_VALUE	ORDINAL_POSITION
select * from performance_schema.session_connect_attrs;
PROCESSLIST_ID	ATTR_NAME	ATTR_VALUE	ORDINAL_POSITION
select * from performance_schema.socket_instances;
EVENT_NAME	OBJECT_INSTANCE_BEGIN	THREAD_ID	SOCKET_ID	IP	PORT	STATE
select * from performance_schema.socket_summary_by_instance;
EVENT_NAME	OBJECT_INSTANCE_BEGIN	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT	COUNT_READ	SUM_TIMER_READ	MIN_TIMER_READ	AVG_TIMER_READ	MAX_TIMER_READ	SUM_NUMBER_OF_BYTES_READ	COUNT_WRITE	SUM_TIMER_WRITE	MIN_TIMER_WRITE	AVG_TIMER_WRITE	MAX_TIMER_WRITE	SUM_NUMBER_OF_BYTES_WRITE	COUNT_MISC	SUM_TIMER_MISC	MIN_TIMER_MISC	AVG_TIMER_MISC	MAX_TIMER_MISC
select * from performance_schema.socket_summary_by_event_name;
EVENT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT	COUNT_READ	SUM_TIMER_READ	MIN_TIMER_READ	AVG_TIMER_READ	MAX_TIMER_READ	SUM_NUMBER_OF_BYTES_READ	COUNT_WRITE	SUM_TIMER_WRITE	MIN_TIMER_WRITE	AVG_TIMER_WRITE	MAX_TIMER_WRITE	SUM_NUMBER_OF_BYTES_WRITE	COUNT_MISC	SUM_TIMER_MISC	MIN_TIMER_MISC	AVG_TIMER_MISC	MAX_TIMER_MISC
select * from performance_schema.hosts;
HOST	CURRENT_CONNECTIONS	TOTAL_CONNECTIONS
select * from performance_schema.mutex_instances;
NAME	OBJECT_INSTANCE_BEGIN	LOCKED_BY_THREAD_ID
select * from performance_schema.objects_summary_global_by_type;
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	COUNT_STAR	SUM_TIMER_WAIT	MIN_TIMER_WAIT	AVG_TIMER_WAIT	MAX_TIMER_WAIT
select * from performance_schema.rwlock_instances;
NAME	OBJECT_INSTANCE_BEGIN	WRITE_LOCKED_BY_THREAD_ID	READ_LOCKED_BY_COUNT
select * from performance_schema.setup_actors;
HOST	USER	ROLE
select * from performance_schema.setup_objects;
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	ENABLED	TIMED
select * from performance_schema.threads;
THREAD_ID	NAME	TYPE	PROCESSLIST_ID	PROCESSLIST_USER	PROCESSLIST_HOST	PROCESSLIST_DB	PROCESSLIST_COMMAND	PROCESSLIST_TIME	PROCESSLIST_STATE	PROCESSLIST_INFO	PARENT_THREAD_ID	ROLE	INSTRUMENTED
select * from performance_schema.users;
USER	CURRENT_CONNECTIONS	TOTAL_CONNECTIONS
