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- mysql> SHOW ENGINE InnoDB STATUS;
- +--------+------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
- | Type | Name | Status |
- +--------+------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
- | InnoDB | |
- =====================================
- 2018-05-29 08:50:05 700002a77000 INNODB MONITOR OUTPUT
- =====================================
- Per second averages calculated from the last 59 seconds
- -----------------
- BACKGROUND THREAD
- -----------------
- srv_master_thread loops: 261 srv_active, 0 srv_shutdown, 24209 srv_idle
- srv_master_thread log flush and writes: 24470
- ----------
- SEMAPHORES
- ----------
- OS WAIT ARRAY INFO: reservation count 182
- OS WAIT ARRAY INFO: signal count 173
- Mutex spin waits 879, rounds 4474, OS waits 30
- RW-shared spins 154, rounds 4623, OS waits 147
- RW-excl spins 6, rounds 193, OS waits 4
- Spin rounds per wait: 5.09 mutex, 30.02 RW-shared, 32.17 RW-excl
- ------------
- TRANSACTIONS
- ------------
- Trx id counter 26186205
- Purge done for trx's n:o < 26186201 undo n:o < 0 state: running but idle
- History list length 2253
- LIST OF TRANSACTIONS FOR EACH SESSION:
- ---TRANSACTION 0, not started
- MySQL thread id 167, OS thread handle 0x700002a77000, query id 27553 localhost root init
- SHOW ENGINE InnoDB STATUS
- --------
- FILE I/O
- --------
- I/O thread 0 state: waiting for i/o request (insert buffer thread)
- I/O thread 1 state: waiting for i/o request (log thread)
- I/O thread 2 state: waiting for i/o request (read thread)
- I/O thread 3 state: waiting for i/o request (read thread)
- I/O thread 4 state: waiting for i/o request (read thread)
- I/O thread 5 state: waiting for i/o request (read thread)
- I/O thread 6 state: waiting for i/o request (write thread)
- I/O thread 7 state: waiting for i/o request (write thread)
- I/O thread 8 state: waiting for i/o request (write thread)
- I/O thread 9 state: waiting for i/o request (write thread)
- Pending normal aio reads: 0 [0, 0, 0, 0] , aio writes: 0 [0, 0, 0, 0] ,
- ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0
- Pending flushes (fsync) log: 0; buffer pool: 0
- 8949 OS file reads, 8407 OS file writes, 3419 OS fsyncs
- 0.03 reads/s, 16384 avg bytes/read, 1.81 writes/s, 0.71 fsyncs/s
- -------------------------------------
- INSERT BUFFER AND ADAPTIVE HASH INDEX
- -------------------------------------
- Ibuf: size 1, free list len 195, seg size 197, 7 merges
- merged operations:
- insert 7, delete mark 0, delete 0
- discarded operations:
- insert 0, delete mark 0, delete 0
- Hash table size 276671, node heap has 64 buffer(s)
- 74.63 hash searches/s, 28.88 non-hash searches/s
- ---
- LOG
- ---
- Log sequence number 25619024464
- Log flushed up to 25619024464
- Pages flushed up to 25619024464
- Last checkpoint at 25619024464
- 0 pending log writes, 0 pending chkp writes
- 2692 log i/o's done, 0.54 log i/o's/second
- ----------------------
- BUFFER POOL AND MEMORY
- ----------------------
- Total memory allocated 137363456; in additional pool allocated 0
- Dictionary memory allocated 3241380
- Buffer pool size 8191
- Free buffers 1024
- Database pages 10923
- Old database pages 4017
- Modified db pages 0
- Pending reads 0
- Pending writes: LRU 0, flush list 0, single page 0
- Pages made young 851, not young 1530902
- 0.00 youngs/s, 0.10 non-youngs/s
- Pages read 28555, created 52, written 6123
- 0.03 reads/s, 0.00 creates/s, 1.46 writes/s
- Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
- Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
- LRU len: 10923, unzip_LRU len: 1092
- I/O sum[88]:cur[0], unzip sum[0]:cur[0]
- --------------
- ROW OPERATIONS
- --------------
- 0 queries inside InnoDB, 0 queries in queue
- 0 read views open inside InnoDB
- Main thread id 123145341431808, state: sleeping
- Number of rows inserted 47, updated 2415, deleted 25, read 3281169
- 0.03 inserts/s, 0.44 updates/s, 0.02 deletes/s, 158.81 reads/s
- ----------------------------
- END OF INNODB MONITOR OUTPUT
- ============================
- |
- +--------+------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
- 1 row in set (0.00 sec)
- mysql> SHOW OPEN TABLES WHERE In_use > 0;
- Empty set (0.01 sec)
- mysql> show full processlist;
- +-----+------+-----------+------+---------+------+-------+-----------------------+
- | Id | User | Host | db | Command | Time | State | Info |
- +-----+------+-----------+------+---------+------+-------+-----------------------+
- | 167 | root | localhost | NULL | Query | 0 | init | show full processlist |
- +-----+------+-----------+------+---------+------+-------+-----------------------+
- 1 row in set (0.00 sec)
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