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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2026-01-23 16:03:22 0x7fc70c0d0700 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: 4 srv_active, 0 srv_shutdown, 150 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 5
OS WAIT ARRAY INFO: signal count 6
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9760
Purge done for trx's n:o < 9759 undo n:o < 0 state: running but idle
History list length 57
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421967892548200, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421967892547328, 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
1165 OS file reads, 263 OS file writes, 68 OS fsyncs
0.09 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 1 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 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
327.80 hash searches/s, 101.25 non-hash searches/s
---
LOG
---
Log sequence number 50952334
Log buffer assigned up to 50952334
Log buffer completed up to 50952334
Log written up to 50952334
Log flushed up to 50952334
Added dirty pages up to 50952334
Pages flushed up to 50952334
Last checkpoint at 50952334
40 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 514958
Buffer pool size 8192
Free buffers 6968
Database pages 1210
Old database pages 466
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 1068, created 142, written 184
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: 1210, unzip_LRU len: 0
I/O sum[0]: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=355, Main thread ID=140492403578624 , state=sleeping
Number of rows inserted 2, updated 324, deleted 0, read 78403
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 515.08 reads/s
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END OF INNODB MONITOR OUTPUT
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