存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
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变量
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缓冲池
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InnoDB 状态
]
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2026-07-11 22:16:41 0x2f18 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 50 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 9293 srv_active, 0 srv_shutdown, 99811 srv_idle
srv_master_thread log flush and writes: 109104
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 600596
OS WAIT ARRAY INFO: signal count 460322
RW-shared spins 807942, rounds 18487228, OS waits 461418
RW-excl spins 38513, rounds 39672, OS waits 204
RW-sx spins 314, rounds 2998, OS waits 48
Spin rounds per wait: 22.88 RW-shared, 1.03 RW-excl, 9.55 RW-sx
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TRANSACTIONS
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Trx id counter 30686254
Purge done for trx's n:o < 30686254 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 282967033454808, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282967033450640, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
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I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (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
2535456 OS file reads, 159861 OS file writes, 86354 OS fsyncs
24.90 reads/s, 16384 avg bytes/read, 8.64 writes/s, 4.18 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, 196 merges
merged operations:
insert 411, delete mark 0, delete 0
discarded operations:
insert 0, delete mark 0, delete 0
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 15 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
812.30 hash searches/s, 87.86 non-hash searches/s
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LOG
---
Log sequence number 23098642396
Log flushed up to 23098641638
Pages flushed up to 23098621020
Last checkpoint at 23098601584
0 pending log flushes, 0 pending chkp writes
43042 log i/o's done, 2.66 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 33554432
Dictionary memory allocated 125200
Buffer pool size 1003
Free buffers 725
Database pages 257
Old database pages 0
Modified db pages 54
Percent of dirty pages(LRU & free pages): 5.493
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 717, not young 97784310
0.00 youngs/s, 0.00 non-youngs/s
Pages read 2535403, created 1269, written 99256
24.90 reads/s, 0.10 creates/s, 5.36 writes/s
Buffer pool hit rate 991 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 3.82/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 257, unzip_LRU len: 0
I/O sum[1322]:cur[12], 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=6328, Main thread ID=4936, state: sleeping
Number of rows inserted 1057, updated 27630, deleted 535, read 116116476
0.10 inserts/s, 1.72 updates/s, 0.00 deletes/s, 2674.89 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 37533
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1.52 reads/s
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END OF INNODB MONITOR OUTPUT
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