存储引擎
InnoDB
Supports transactions, row-level locking, and foreign keys
[
变量
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缓冲池
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InnoDB 状态
]
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2025-12-24 16:02:20 0x7fde951dd700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 32 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 11 srv_active, 0 srv_shutdown, 81 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 36
OS WAIT ARRAY INFO: signal count 32
RW-shared spins 3, rounds 5, OS waits 2
RW-excl spins 5, rounds 92, OS waits 3
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.67 RW-shared, 18.40 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9898
Purge done for trx's n:o < 9893 undo n:o < 0 state: running but idle
History list length 89
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422069999086184, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422069999085312, 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
1396 OS file reads, 883 OS file writes, 292 OS fsyncs
0.06 reads/s, 16384 avg bytes/read, 13.12 writes/s, 4.94 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 0 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 25 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 28 buffer(s)
262.43 hash searches/s, 143.15 non-hash searches/s
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LOG
---
Log sequence number 51150510
Log buffer assigned up to 51150510
Log buffer completed up to 51150510
Log written up to 51150510
Log flushed up to 51150510
Added dirty pages up to 51150510
Pages flushed up to 51150510
Last checkpoint at 51150510
314 log i/o's done, 5.72 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 137363456
Dictionary memory allocated 627356
Buffer pool size 8192
Free buffers 6666
Database pages 1460
Old database pages 547
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1275, created 185, written 501
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: 1460, unzip_LRU len: 0
I/O sum[0]:cur[1], 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=368, Main thread ID=140594515203840 , state=sleeping
Number of rows inserted 157, updated 509, deleted 24, read 144469
2.94 inserts/s, 4.00 updates/s, 0.75 deletes/s, 467.17 reads/s
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END OF INNODB MONITOR OUTPUT
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