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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2026-08-26 21:59:56 0x5334 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 43 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 16578 srv_active, 0 srv_shutdown, 2314977 srv_idle
srv_master_thread log flush and writes: 2331555
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 12509
OS WAIT ARRAY INFO: signal count 9470
RW-shared spins 5174, rounds 153241, OS waits 5089
RW-excl spins 1080, rounds 19809, OS waits 609
RW-sx spins 8, rounds 165, OS waits 5
Spin rounds per wait: 29.62 RW-shared, 18.34 RW-excl, 20.62 RW-sx
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TRANSACTIONS
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Trx id counter 238158
Purge done for trx's n:o < 238158 undo n:o < 0 state: running but idle
History list length 2
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284255858422264, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284255858401424, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284255858418096, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284255858413928, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284255858409760, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284255858405592, 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
85727 OS file reads, 198117 OS file writes, 104878 OS fsyncs
5.07 reads/s, 16384 avg bytes/read, 6.21 writes/s, 3.47 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 14, seg size 16, 15 merges
merged operations:
 insert 16, 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 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)
9.93 hash searches/s, 23.42 non-hash searches/s
---
LOG
---
Log sequence number 147669425
Log flushed up to   147669405
Pages flushed up to 147615798
Last checkpoint at  147615606
0 pending log flushes, 0 pending chkp writes
56296 log i/o's done, 2.44 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 653544
Buffer pool size   1003
Free buffers       726
Database pages     269
Old database pages 0
Modified db pages  94
Percent of dirty pages(LRU & free pages): 9.438
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1055, not young 11139
0.00 youngs/s, 0.00 non-youngs/s
Pages read 85460, created 1554, written 123624
5.07 reads/s, 0.16 creates/s, 3.26 writes/s
Buffer pool hit rate 951 / 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: 269, unzip_LRU len: 0
I/O sum[358]:cur[1], 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=11340, Main thread ID=13864, state: sleeping
Number of rows inserted 665, updated 28432, deleted 78, read 3501639
0.00 inserts/s, 1.93 updates/s, 0.00 deletes/s, 31.51 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 181201
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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