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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2026-04-12 00:22:10 0x18d0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 52 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 179800 srv_active, 0 srv_shutdown, 31537 srv_idle
srv_master_thread log flush and writes: 211337
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 10240058
OS WAIT ARRAY INFO: signal count 430430
RW-shared spins 65233, rounds 1914634, OS waits 54624
RW-excl spins 3176, rounds 58298, OS waits 1580
RW-sx spins 69, rounds 1381, OS waits 37
Spin rounds per wait: 29.35 RW-shared, 18.36 RW-excl, 20.01 RW-sx
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TRANSACTIONS
------------
Trx id counter 8587349
Purge done for trx's n:o < 8587349 undo n:o < 0 state: running but idle
History list length 1
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283722789774176, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789770008, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789749168, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789745000, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789765840, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789761672, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789757504, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789753336, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789736664, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789732496, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789740832, 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
432042 OS file reads, 2302726 OS file writes, 1283382 OS fsyncs
4.27 reads/s, 16384 avg bytes/read, 17.94 writes/s, 8.87 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 171 merges
merged operations:
insert 519, delete mark 3, delete 2
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)
30.83 hash searches/s, 68.44 non-hash searches/s
---
LOG
---
Log sequence number 4917012577
Log flushed up to 4917012577
Pages flushed up to 4917000827
Last checkpoint at 4916996269
0 pending log flushes, 0 pending chkp writes
663667 log i/o's done, 4.62 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 122696
Buffer pool size 1003
Free buffers 737
Database pages 259
Old database pages 0
Modified db pages 45
Percent of dirty pages(LRU & free pages): 4.514
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 431990, created 13760, written 1389240
4.27 reads/s, 0.25 creates/s, 11.56 writes/s
Buffer pool hit rate 981 / 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: 259, unzip_LRU len: 0
I/O sum[821]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=18880, Main thread ID=14924, state: sleeping
Number of rows inserted 2297, updated 355775, deleted 1337, read 11714270
0.00 inserts/s, 3.13 updates/s, 0.00 deletes/s, 55.02 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2260
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1.19 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
