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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2026-09-03 14:35:20 0x104c INNODB MONITOR OUTPUT
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Per second averages calculated from the last 29 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 15022 srv_active, 0 srv_shutdown, 60273 srv_idle
srv_master_thread log flush and writes: 75295
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 24680
OS WAIT ARRAY INFO: signal count 11927
RW-shared spins 5081, rounds 146860, OS waits 4854
RW-excl spins 3817, rounds 15817, OS waits 185
RW-sx spins 50, rounds 1480, OS waits 47
Spin rounds per wait: 28.90 RW-shared, 4.14 RW-excl, 29.60 RW-sx
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TRANSACTIONS
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Trx id counter 4437091
Purge done for trx's n:o < 4437091 undo n:o < 0 state: running
History list length 4
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283396615635304, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283396615631136, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283396615626968, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283396615622800, 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
135591 OS file reads, 300682 OS file writes, 153996 OS fsyncs
21.96 reads/s, 16384 avg bytes/read, 20.76 writes/s, 11.52 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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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 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)
25.72 hash searches/s, 80.38 non-hash searches/s
---
LOG
---
Log sequence number 794362331
Log flushed up to   794362311
Pages flushed up to 794314315
Last checkpoint at  794302840
0 pending log flushes, 0 pending chkp writes
96089 log i/o's done, 6.86 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 723656
Buffer pool size   1003
Free buffers       737
Database pages     258
Old database pages 0
Modified db pages  88
Percent of dirty pages(LRU & free pages): 8.835
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 325, not young 8913
0.00 youngs/s, 0.00 non-youngs/s
Pages read 135298, created 2450, written 182254
21.96 reads/s, 0.21 creates/s, 11.79 writes/s
Buffer pool hit rate 937 / 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: 258, unzip_LRU len: 0
I/O sum[1699]:cur[45], 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=3028, Main thread ID=2480, state: sleeping
Number of rows inserted 669, updated 30990, deleted 552, read 2211649
0.07 inserts/s, 5.21 updates/s, 0.07 deletes/s, 392.40 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 196626
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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