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 21:08:02 0x2da0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 55 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 8975 srv_active, 0 srv_shutdown, 96061 srv_idle
srv_master_thread log flush and writes: 105036
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 452038
OS WAIT ARRAY INFO: signal count 326509
RW-shared spins 621044, rounds 13736131, OS waits 325497
RW-excl spins 24526, rounds 29978, OS waits 178
RW-sx spins 287, rounds 2404, OS waits 31
Spin rounds per wait: 22.12 RW-shared, 1.22 RW-excl, 8.38 RW-sx
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TRANSACTIONS
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Trx id counter 30684231
Purge done for trx's n:o < 30684231 undo n:o < 0 state: running
History list length 6
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
--------
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
1894664 OS file reads, 153703 OS file writes, 83360 OS fsyncs
9.40 reads/s, 16384 avg bytes/read, 3.45 writes/s, 2.16 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, 152 merges
merged operations:
insert 305, 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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
11.84 hash searches/s, 26.24 non-hash searches/s
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LOG
---
Log sequence number 23097474235
Log flushed up to 23097474215
Pages flushed up to 23097473159
Last checkpoint at 23097469837
0 pending log flushes, 0 pending chkp writes
41208 log i/o's done, 1.22 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 739
Database pages 257
Old database pages 0
Modified db pages 3
Percent of dirty pages(LRU & free pages): 0.301
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 629, not young 72545741
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1894611, created 1223, written 95366
9.40 reads/s, 0.02 creates/s, 1.89 writes/s
Buffer pool hit rate 900 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.93/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 257, unzip_LRU len: 0
I/O sum[429]:cur[9], 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 844, updated 26520, deleted 455, read 88511577
0.00 inserts/s, 0.47 updates/s, 0.00 deletes/s, 45.69 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 36137
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 5.42 reads/s
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END OF INNODB MONITOR OUTPUT
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