存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[
变量
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缓冲池
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InnoDB 状态
]
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2026-08-03 09:16:53 0xc6348 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 38 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 29948 srv_active, 0 srv_shutdown, 12532140 srv_idle
srv_master_thread log flush and writes: 12562088
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 143106
OS WAIT ARRAY INFO: signal count 46352
RW-shared spins 18166, rounds 542289, OS waits 17845
RW-excl spins 197, rounds 5538, OS waits 159
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 29.85 RW-shared, 28.11 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 116218
Purge done for trx's n:o < 116218 undo n:o < 0 state: running but idle
History list length 9
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283301628793120, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283301628784784, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283301628797288, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283301628788952, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
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
65742 OS file reads, 356850 OS file writes, 210425 OS fsyncs
3.41 reads/s, 16384 avg bytes/read, 10.51 writes/s, 3.59 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 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 0 buffer(s)
Hash table size 4441, node heap has 0 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)
10.89 hash searches/s, 26.37 non-hash searches/s
---
LOG
---
Log sequence number 63754973
Log flushed up to 63754953
Pages flushed up to 63750485
Last checkpoint at 63709024
0 pending log flushes, 0 pending chkp writes
114346 log i/o's done, 2.62 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 80128
Buffer pool size 1003
Free buffers 739
Database pages 260
Old database pages 0
Modified db pages 11
Percent of dirty pages(LRU & free pages): 1.100
Max dirty pages percent: 75.000
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 65707, created 1887, written 208325
3.41 reads/s, 0.10 creates/s, 7.54 writes/s
Buffer pool hit rate 966 / 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: 260, unzip_LRU len: 0
I/O sum[484]:cur[2], 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=4156, Main thread ID=2896, state: sleeping
Number of rows inserted 1, updated 47452, deleted 0, read 965196
0.00 inserts/s, 2.21 updates/s, 0.00 deletes/s, 14.39 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 58123
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.53 reads/s
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END OF INNODB MONITOR OUTPUT
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