儲存引擎

InnoDB

Supports transactions, row-level locking, and foreign keys

[ 變數 | 緩衝池 | InnoDB 狀態 ]

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2025-07-01 07:41:12 0x7fd00c0ad700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 51 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 31 srv_active, 0 srv_shutdown, 593 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 450
OS WAIT ARRAY INFO: signal count 436
RW-shared spins 78, rounds 142, OS waits 64
RW-excl spins 240, rounds 1699, OS waits 23
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.82 RW-shared, 7.08 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10273
Purge done for trx's n:o < 10273 undo n:o < 0 state: running but idle
History list length 35
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422006671330768, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422006671329896, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422006671329024, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
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I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (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
1318 OS file reads, 2624 OS file writes, 807 OS fsyncs
0.14 reads/s, 16384 avg bytes/read, 6.76 writes/s, 2.39 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 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
192.02 hash searches/s, 87.17 non-hash searches/s
---
LOG
---
Log sequence number          52079055
Log buffer assigned up to    52079055
Log buffer completed up to   52079055
Log written up to            52079055
Log flushed up to            52079055
Added dirty pages up to      52079055
Pages flushed up to          52079055
Last checkpoint at           52079055
1330 log i/o's done, 2.86 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 472822
Buffer pool size   8192
Free buffers       6826
Database pages     1341
Old database pages 475
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 955, not young 4356
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1183, created 164, written 1179
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 7 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1341, unzip_LRU len: 0
I/O sum[193]: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=372, Main thread ID=140531184109312 , state=sleeping
Number of rows inserted 176, updated 1781, deleted 1529, read 412194
0.92 inserts/s, 0.69 updates/s, 0.00 deletes/s, 425.66 reads/s
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END OF INNODB MONITOR OUTPUT
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