儲存引擎

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ 變數 | 緩衝池 | InnoDB 狀態 ]

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2026-01-22 22:09:34 0x13a4 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: 12859 srv_active, 0 srv_shutdown, 22064 srv_idle
srv_master_thread log flush and writes: 34923
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 16180
OS WAIT ARRAY INFO: signal count 11371
RW-shared spins 9496, rounds 215468, OS waits 5245
RW-excl spins 412, rounds 5265, OS waits 140
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 22.69 RW-shared, 12.78 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 814841
Purge done for trx's n:o < 814841 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283663988097240, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283663988093072, 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
120711 OS file reads, 139249 OS file writes, 83193 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 13, seg size 15, 35 merges
merged operations:
 insert 60, 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)
2.55 hash searches/s, 13.31 non-hash searches/s
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LOG
---
Log sequence number 1505392839
Log flushed up to   1505392839
Pages flushed up to 1505392839
Last checkpoint at  1505392830
0 pending log flushes, 0 pending chkp writes
40624 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 335536
Buffer pool size   1003
Free buffers       379
Database pages     616
Old database pages 207
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 29183, not young 72143
77.00 youngs/s, 0.00 non-youngs/s
Pages read 120574, created 1105, written 83859
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 323 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 616, unzip_LRU len: 0
I/O sum[12]: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=4736, Main thread ID=6252, state: sleeping
Number of rows inserted 200, updated 17876, deleted 63, read 2810101
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 140.82 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 66009
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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