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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2026-08-27 17:49:42 0x36ac INNODB MONITOR OUTPUT
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Per second averages calculated from the last 39 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 548 srv_active, 0 srv_shutdown, 17323 srv_idle
srv_master_thread log flush and writes: 17871
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 24858
OS WAIT ARRAY INFO: signal count 832
RW-shared spins 521, rounds 12630, OS waits 259
RW-excl spins 233, rounds 2108, OS waits 37
RW-sx spins 1, rounds 1, OS waits 0
Spin rounds per wait: 24.24 RW-shared, 9.05 RW-excl, 1.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 2811
Purge done for trx's n:o < 2811 undo n:o < 0 state: running
History list length 15
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283565670330656, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283565670326488, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283565670364000, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283565670359832, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283565670351496, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283565670347328, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283565670343160, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283565670338992, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283565670334824, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283565670322320, 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
2478 OS file reads, 8191 OS file writes, 4016 OS fsyncs
5.90 reads/s, 16384 avg bytes/read, 14.59 writes/s, 7.97 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 0 merges
merged operations:
 insert 0, 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 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
17.64 hash searches/s, 47.92 non-hash searches/s
---
LOG
---
Log sequence number 2078834
Log flushed up to   2078834
Pages flushed up to 2021183
Last checkpoint at  2013197
0 pending log flushes, 0 pending chkp writes
2254 log i/o's done, 4.64 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 80128
Buffer pool size   1003
Free buffers       738
Database pages     262
Old database pages 0
Modified db pages  141
Percent of dirty pages(LRU & free pages): 14.086
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 2442, created 238, written 5233
5.90 reads/s, 0.00 creates/s, 8.41 writes/s
Buffer pool hit rate 959 / 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: 262, unzip_LRU len: 0
I/O sum[910]:cur[9], 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=9380, Main thread ID=9976, state: sleeping
Number of rows inserted 2463, updated 1218, deleted 0, read 13269
0.00 inserts/s, 3.64 updates/s, 0.00 deletes/s, 17.51 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1312
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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