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a4bccefb11
In rare cases, both listener and worker can do poll at the same time (one of them will return events, another one no events) Fix test query to account for it.
90 lines
2.6 KiB
Plaintext
90 lines
2.6 KiB
Plaintext
DESC INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
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Field Type Null Key Default Extra
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GROUP_ID int(6) NO 0
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CONNECTIONS int(6) NO 0
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THREADS int(6) NO 0
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ACTIVE_THREADS int(6) NO 0
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STANDBY_THREADS int(6) NO 0
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QUEUE_LENGTH int(6) NO 0
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HAS_LISTENER tinyint(1) NO 0
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IS_STALLED tinyint(1) NO 0
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SELECT COUNT(*)=@@thread_pool_size FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
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COUNT(*)=@@thread_pool_size
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1
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SELECT SUM(CONNECTIONS) FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
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SUM(CONNECTIONS)
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1
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SELECT SUM(THREADS) > 0 FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
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SUM(THREADS) > 0
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1
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SELECT SUM(ACTIVE_THREADS) > 0 FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
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SUM(ACTIVE_THREADS) > 0
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1
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SELECT SUM(QUEUE_LENGTH) FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
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SUM(QUEUE_LENGTH)
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0
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SELECT SUM(IS_STALLED) FROM INFORMATION_SCHEMA.THREAD_POOL_GROUPS;
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SUM(IS_STALLED)
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0
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DESC INFORMATION_SCHEMA.THREAD_POOL_QUEUES;
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Field Type Null Key Default Extra
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GROUP_ID int(6) NO 0
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POSITION int(6) NO 0
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PRIORITY int(1) NO 0
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CONNECTION_ID bigint(19) unsigned NO 0
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QUEUEING_TIME_MICROSECONDS bigint(19) NO 0
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DESC INFORMATION_SCHEMA.THREAD_POOL_STATS;
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Field Type Null Key Default Extra
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GROUP_ID int(6) NO 0
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THREAD_CREATIONS bigint(19) NO 0
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THREAD_CREATIONS_DUE_TO_STALL bigint(19) NO 0
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WAKES bigint(19) NO 0
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WAKES_DUE_TO_STALL bigint(19) NO 0
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THROTTLES bigint(19) NO 0
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STALLS bigint(19) NO 0
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POLLS_BY_LISTENER bigint(19) NO 0
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POLLS_BY_WORKER bigint(19) NO 0
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DEQUEUES_BY_LISTENER bigint(19) NO 0
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DEQUEUES_BY_WORKER bigint(19) NO 0
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SELECT SUM(DEQUEUES_BY_LISTENER+DEQUEUES_BY_WORKER) > 0 FROM INFORMATION_SCHEMA.THREAD_POOL_STATS;
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SUM(DEQUEUES_BY_LISTENER+DEQUEUES_BY_WORKER) > 0
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1
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SELECT SUM(POLLS_BY_LISTENER+POLLS_BY_WORKER) > 0 FROM INFORMATION_SCHEMA.THREAD_POOL_STATS;
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SUM(POLLS_BY_LISTENER+POLLS_BY_WORKER) > 0
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1
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FLUSH THREAD_POOL_STATS;
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SELECT SUM(DEQUEUES_BY_LISTENER+DEQUEUES_BY_WORKER) FROM INFORMATION_SCHEMA.THREAD_POOL_STATS;
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SUM(DEQUEUES_BY_LISTENER+DEQUEUES_BY_WORKER)
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1
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SELECT SUM(POLLS_BY_LISTENER+POLLS_BY_WORKER) BETWEEN 2 AND 3 FROM INFORMATION_SCHEMA.THREAD_POOL_STATS;
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SUM(POLLS_BY_LISTENER+POLLS_BY_WORKER) BETWEEN 2 AND 3
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1
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DESC INFORMATION_SCHEMA.THREAD_POOL_WAITS;
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Field Type Null Key Default Extra
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REASON varchar(16) NO
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COUNT bigint(19) NO 0
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SELECT REASON FROM INFORMATION_SCHEMA.THREAD_POOL_WAITS;
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REASON
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UNKNOWN
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SLEEP
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DISKIO
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ROW_LOCK
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GLOBAL_LOCK
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META_DATA_LOCK
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TABLE_LOCK
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USER_LOCK
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BINLOG
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GROUP_COMMIT
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SYNC
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NET
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SELECT COUNT FROM INFORMATION_SCHEMA.THREAD_POOL_WAITS WHERE REASON='Sleep';
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COUNT
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0
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SELECT SLEEP(0.01);
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SLEEP(0.01)
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0
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SELECT COUNT FROM INFORMATION_SCHEMA.THREAD_POOL_WAITS WHERE REASON='Sleep';
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COUNT
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1
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FLUSH THREAD_POOL_WAITS;
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