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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2025-07-22 14:21:08 0x204cc INNODB MONITOR OUTPUT
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Per second averages calculated from the last 39 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 14045 srv_active, 0 srv_shutdown, 1073378 srv_idle
srv_master_thread log flush and writes: 1087423
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 33771
OS WAIT ARRAY INFO: signal count 34062
RW-shared spins 36229, rounds 843443, OS waits 26340
RW-excl spins 8554, rounds 110914, OS waits 3032
RW-sx spins 173, rounds 3852, OS waits 125
Spin rounds per wait: 23.28 RW-shared, 12.97 RW-excl, 22.27 RW-sx
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TRANSACTIONS
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Trx id counter 1910004
Purge done for trx's n:o < 1910004 undo n:o < 0 state: running
History list length 1
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283539980357848, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283539980353680, 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
427900 OS file reads, 294910 OS file writes, 165777 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 387, seg size 389, 8382 merges
merged operations:
 insert 20050, delete mark 45, delete 1
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 3 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)
0.13 hash searches/s, 0.08 non-hash searches/s
---
LOG
---
Log sequence number 747980339
Log flushed up to   747980339
Pages flushed up to 747980339
Last checkpoint at  747980330
0 pending log flushes, 0 pending chkp writes
97957 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 252904
Buffer pool size   1003
Free buffers       739
Database pages     256
Old database pages 0
Modified db pages  0
Percent of dirty pages(LRU & free pages): 0.000
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1446, not young 69339
0.00 youngs/s, 0.00 non-youngs/s
Pages read 427796, created 1056, written 172888
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 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: 256, unzip_LRU len: 0
I/O sum[0]:cur[0], 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=4532, Main thread ID=6324, state: sleeping
Number of rows inserted 27164, updated 7984, deleted 9680, read 526073141
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.13 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2122
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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