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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2026-06-11 15:53:37 0x76b8 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 29 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 792497 srv_active, 0 srv_shutdown, 151181 srv_idle
srv_master_thread log flush and writes: 943678
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 39288555
OS WAIT ARRAY INFO: signal count 1718612
RW-shared spins 388230, rounds 11077219, OS waits 318270
RW-excl spins 15574, rounds 236043, OS waits 6368
RW-sx spins 524, rounds 10219, OS waits 262
Spin rounds per wait: 28.53 RW-shared, 15.16 RW-excl, 19.50 RW-sx
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TRANSACTIONS
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Trx id counter 25106197
Purge done for trx's n:o < 25106197 undo n:o < 0 state: running but idle
History list length 2
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283232543916176, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283232543920344, 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
2571457 OS file reads, 10009775 OS file writes, 5634190 OS fsyncs
2.52 reads/s, 16384 avg bytes/read, 10.52 writes/s, 5.90 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, 2628 merges
merged operations:
 insert 5593, delete mark 58, delete 34
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)
24.86 hash searches/s, 41.65 non-hash searches/s
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LOG
---
Log sequence number 20042142038
Log flushed up to   20042142018
Pages flushed up to 20042138932
Last checkpoint at  20042132726
0 pending log flushes, 0 pending chkp writes
2914346 log i/o's done, 3.21 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       737
Database pages     259
Old database pages 0
Modified db pages  16
Percent of dirty pages(LRU & free pages): 1.605
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 2571397, created 59810, written 5998321
2.52 reads/s, 0.10 creates/s, 6.24 writes/s
Buffer pool hit rate 984 / 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[457]: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=2856, Main thread ID=4964, state: sleeping
Number of rows inserted 11252, updated 1542087, deleted 7699, read 84785523
0.00 inserts/s, 1.66 updates/s, 0.00 deletes/s, 44.07 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2773
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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