存储引擎

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ 变量 | 缓冲池 | InnoDB 状态 ]

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2026-04-17 21:21:43 0x104c INNODB MONITOR OUTPUT
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Per second averages calculated from the last 53 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 474 srv_active, 0 srv_shutdown, 45089 srv_idle
srv_master_thread log flush and writes: 45563
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 17692
OS WAIT ARRAY INFO: signal count 19270
RW-shared spins 32873, rounds 691474, OS waits 17388
RW-excl spins 4405, rounds 10400, OS waits 99
RW-sx spins 9, rounds 154, OS waits 3
Spin rounds per wait: 21.03 RW-shared, 2.36 RW-excl, 17.11 RW-sx
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TRANSACTIONS
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Trx id counter 1036583
Purge done for trx's n:o < 1036583 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283699912626728, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283699912622552, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283699912618376, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283699912614200, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283699912610024, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283699912605848, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
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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
1311436 OS file reads, 10095 OS file writes, 5550 OS fsyncs
0.43 reads/s, 16384 avg bytes/read, 1.51 writes/s, 0.72 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, 434 merges
merged operations:
 insert 499, delete mark 10, 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 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)
Hash table size 4441, node heap has 1 buffer(s)
1.68 hash searches/s, 7.08 non-hash searches/s
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LOG
---
Log sequence number 102400464
Log flushed up to   102400444
Pages flushed up to 102391923
Last checkpoint at  102391879
0 pending log flushes, 0 pending chkp writes
3419 log i/o's done, 0.53 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 150240
Buffer pool size   1003
Free buffers       734
Database pages     261
Old database pages 0
Modified db pages  31
Percent of dirty pages(LRU & free pages): 3.112
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 27614, not young 88894581
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1311372, created 153, written 5887
0.43 reads/s, 0.00 creates/s, 0.91 writes/s
Buffer pool hit rate 978 / 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: 261, unzip_LRU len: 0
I/O sum[64]:cur[7], 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=8564, Main thread ID=9200, state: sleeping
Number of rows inserted 503, updated 249, deleted 9, read 118019747
0.00 inserts/s, 0.34 updates/s, 0.00 deletes/s, 1.68 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1087
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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