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 20:11:45 0xcec INNODB MONITOR OUTPUT
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Per second averages calculated from the last 19 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 16222 srv_active, 0 srv_shutdown, 2308934 srv_idle
srv_master_thread log flush and writes: 2325156
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 10324
OS WAIT ARRAY INFO: signal count 8546
RW-shared spins 4728, rounds 140701, OS waits 4683
RW-excl spins 1038, rounds 18720, OS waits 574
RW-sx spins 6, rounds 131, OS waits 4
Spin rounds per wait: 29.76 RW-shared, 18.03 RW-excl, 21.83 RW-sx
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TRANSACTIONS
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Trx id counter 234173
Purge done for trx's n:o < 234173 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---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)
---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)
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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
81053 OS file reads, 189233 OS file writes, 101086 OS fsyncs
0.74 reads/s, 16384 avg bytes/read, 0.95 writes/s, 0.95 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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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)
4.37 hash searches/s, 11.47 non-hash searches/s
---
LOG
---
Log sequence number 145205018
Log flushed up to   145205018
Pages flushed up to 145187799
Last checkpoint at  145187790
0 pending log flushes, 0 pending chkp writes
53648 log i/o's done, 0.95 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 653544
Buffer pool size   1003
Free buffers       738
Database pages     257
Old database pages 0
Modified db pages  33
Percent of dirty pages(LRU & free pages): 3.313
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 80786, created 1455, written 117898
0.74 reads/s, 0.05 creates/s, 0.00 writes/s
Buffer pool hit rate 980 / 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: 257, unzip_LRU len: 0
I/O sum[263]:cur[3], 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 26445, deleted 78, read 3481952
0.00 inserts/s, 0.79 updates/s, 0.00 deletes/s, 4.26 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 176106
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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