存储引擎
InnoDB
Supports transactions, row-level locking, and foreign keys
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变量
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缓冲池
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InnoDB 状态
]
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2026-01-18 14:39:41 0x7f2d840cd700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 46 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 22 srv_active, 0 srv_shutdown, 511 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 38
OS WAIT ARRAY INFO: signal count 38
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 1, rounds 30, OS waits 1
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9841
Purge done for trx's n:o < 9841 undo n:o < 0 state: running but idle
History list length 80
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421308998642280, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421308998641408, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (write thread)
Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] ,
ibuf aio reads:, log i/o's:, sync i/o's:
Pending flushes (fsync) log: 0; buffer pool: 0
1282 OS file reads, 508 OS file writes, 237 OS fsyncs
0.04 reads/s, 16384 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 0, seg size 2, 0 merges
merged operations:
insert 0, delete mark 0, delete 0
discarded operations:
insert 0, delete mark 0, delete 0
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
288.58 hash searches/s, 105.30 non-hash searches/s
---
LOG
---
Log sequence number 50965433
Log buffer assigned up to 50965433
Log buffer completed up to 50965433
Log written up to 50965433
Log flushed up to 50965433
Added dirty pages up to 50965433
Pages flushed up to 50965433
Last checkpoint at 50965433
134 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 614030
Buffer pool size 8192
Free buffers 6882
Database pages 1293
Old database pages 457
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 164, not young 983
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1151, created 148, written 293
0.00 reads/s, 0.00 creates/s, 0.00 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: 1293, unzip_LRU len: 0
I/O sum[2]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=369, Main thread ID=139833511966464 , state=sleeping
Number of rows inserted 154, updated 347, deleted 0, read 332510
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 505.45 reads/s
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END OF INNODB MONITOR OUTPUT
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