DESC INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
Field	Type	Null	Key	Default	Extra
GROUP_ID	int(6)	NO		NULL	
CONNECTIONS	int(6)	NO		NULL	
THREADS	int(6)	NO		NULL	
ACTIVE_THREADS	int(6)	NO		NULL	
STANDBY_THREADS	int(6)	NO		NULL	
QUEUE_LENGTH	int(6)	NO		NULL	
HAS_LISTENER	tinyint(1)	NO		NULL	
IS_STALLED	tinyint(1)	NO		NULL	
SELECT COUNT(*)=@@thread_pool_size FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
COUNT(*)=@@thread_pool_size
1
SELECT SUM(CONNECTIONS) FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
SUM(CONNECTIONS)
1
SELECT SUM(THREADS) > 0 FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
SUM(THREADS) > 0
1
SELECT SUM(ACTIVE_THREADS) > 0 FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
SUM(ACTIVE_THREADS) > 0
1
SELECT SUM(QUEUE_LENGTH) FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
SUM(QUEUE_LENGTH)
0
SELECT SUM(IS_STALLED) FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
SUM(IS_STALLED)
0
DESC INFORMATION_SCHEMA.THREAD_POOL_STATS;
Field	Type	Null	Key	Default	Extra
GROUP_ID	int(6)	NO		NULL	
THREAD_CREATIONS	bigint(19)	NO		NULL	
THREAD_CREATIONS_DUE_TO_STALL	bigint(19)	NO		NULL	
WAKES	bigint(19)	NO		NULL	
WAKES_DUE_TO_STALL	bigint(19)	NO		NULL	
THROTTLES	bigint(19)	NO		NULL	
STALLS	bigint(19)	NO		NULL	
POLLS_BY_LISTENER	bigint(19)	NO		NULL	
POLLS_BY_WORKER	bigint(19)	NO		NULL	
DEQUEUES_BY_LISTENER	bigint(19)	NO		NULL	
DEQUEUES_BY_WORKER	bigint(19)	NO		NULL	
SELECT SUM(DEQUEUES_BY_LISTENER+DEQUEUES_BY_WORKER) > 0 FROM INFORMATION_SCHEMA.THREAD_POOL_STATS;
SUM(DEQUEUES_BY_LISTENER+DEQUEUES_BY_WORKER) > 0
1
SELECT SUM(POLLS_BY_LISTENER+POLLS_BY_WORKER) > 0 FROM INFORMATION_SCHEMA.THREAD_POOL_STATS;
SUM(POLLS_BY_LISTENER+POLLS_BY_WORKER) > 0
1
FLUSH THREAD_POOL_STATS;
SELECT SUM(DEQUEUES_BY_LISTENER+DEQUEUES_BY_WORKER)  FROM INFORMATION_SCHEMA.THREAD_POOL_STATS;
SUM(DEQUEUES_BY_LISTENER+DEQUEUES_BY_WORKER)
1
SELECT SUM(POLLS_BY_LISTENER) FROM INFORMATION_SCHEMA.THREAD_POOL_STATS;
SUM(POLLS_BY_LISTENER)
2
SELECT SUM(POLLS_BY_WORKER) FROM INFORMATION_SCHEMA.THREAD_POOL_STATS;
SUM(POLLS_BY_WORKER)
0
DESC INFORMATION_SCHEMA.THREAD_POOL_WAITS;
Field	Type	Null	Key	Default	Extra
REASON	varchar(16)	NO		NULL	
COUNT	bigint(19)	NO		NULL	
SELECT REASON FROM INFORMATION_SCHEMA.THREAD_POOL_WAITS;
REASON
UNKNOWN
SLEEP
DISKIO
ROW_LOCK
GLOBAL_LOCK
META_DATA_LOCK
TABLE_LOCK
USER_LOCK
BINLOG
GROUP_COMMIT
SYNC
NET
SELECT COUNT FROM INFORMATION_SCHEMA.THREAD_POOL_WAITS WHERE REASON='Sleep';
COUNT
0
SELECT SLEEP(0.01);
SLEEP(0.01)
0
SELECT COUNT FROM INFORMATION_SCHEMA.THREAD_POOL_WAITS WHERE REASON='Sleep';
COUNT
1
FLUSH THREAD_POOL_WAITS;
DESC INFORMATION_SCHEMA.THREAD_POOL_QUEUES;
Field	Type	Null	Key	Default	Extra
GROUP_ID	int(6)	NO		NULL	
POSITION	int(6)	NO		NULL	
PRIORITY	int(1)	NO		NULL	
CONNECTION_ID	bigint(19) unsigned	YES		NULL	
QUEUEING_TIME_MICROSECONDS	bigint(19)	NO		NULL	
# restart: with restart_parameters
connect  con1, localhost, root,,test;
connection con1;
connect  con2, localhost, root,,test;
connection con2;
connect extra_con,127.0.0.1,root,,test,$extra_port,;
connection con1;
SELECT SLEEP(1000);
connection extra_con;
connection con2;
DO 1;
connection extra_con;
KILL QUERY con1_id;
disconnect extra_con;
connection con1;
disconnect con1;
connection con2;
disconnect con2;
connection default;