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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2026-06-26 04:50:32 0x1094 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 56 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 228 srv_active, 0 srv_shutdown, 52539 srv_idle
srv_master_thread log flush and writes: 52767
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 752
OS WAIT ARRAY INFO: signal count 440
RW-shared spins 218, rounds 6187, OS waits 199
RW-excl spins 134, rounds 570, OS waits 10
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 28.38 RW-shared, 4.25 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 7808
Purge done for trx's n:o < 7808 undo n:o < 0 state: running
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284261631656296, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284261631652128, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284261631647960, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284261631643792, 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
4789 OS file reads, 4342 OS file writes, 2063 OS fsyncs
4.39 reads/s, 16384 avg bytes/read, 8.52 writes/s, 3.96 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 12, seg size 14, 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 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)
9.48 hash searches/s, 29.34 non-hash searches/s
---
LOG
---
Log sequence number 5685406
Log flushed up to   5685406
Pages flushed up to 5680187
Last checkpoint at  5657963
0 pending log flushes, 0 pending chkp writes
1288 log i/o's done, 2.70 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 646032
Buffer pool size   1003
Free buffers       741
Database pages     256
Old database pages 0
Modified db pages  28
Percent of dirty pages(LRU & free pages): 2.806
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 42, not young 1331
0.00 youngs/s, 0.00 non-youngs/s
Pages read 4527, created 166, written 2760
4.39 reads/s, 0.04 creates/s, 5.21 writes/s
Buffer pool hit rate 958 / 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[535]: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=11136, Main thread ID=11020, state: sleeping
Number of rows inserted 18, updated 701, deleted 5, read 42019
0.00 inserts/s, 2.05 updates/s, 0.00 deletes/s, 9.59 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 7513
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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