存储引擎
InnoDB
Supports transactions, row-level locking, and foreign keys
[
变量
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缓冲池
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InnoDB 状态
]
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2025-11-30 10:41:41 0x7f9a9c136700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 43 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 24 srv_active, 0 srv_shutdown, 628 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 42
OS WAIT ARRAY INFO: signal count 38
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 1, rounds 30, OS waits 1
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9885
Purge done for trx's n:o < 9884 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421777164536424, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421777164535552, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
--------
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
1491 OS file reads, 1043 OS file writes, 268 OS fsyncs
0.28 reads/s, 13824 avg bytes/read, 4.58 writes/s, 0.60 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 8 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 25 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 31 buffer(s)
692.33 hash searches/s, 422.55 non-hash searches/s
---
LOG
---
Log sequence number 50979147
Log buffer assigned up to 50979147
Log buffer completed up to 50979147
Log written up to 50979147
Log flushed up to 50979147
Added dirty pages up to 50979147
Pages flushed up to 50979147
Last checkpoint at 50979147
183 log i/o's done, 0.35 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 649047
Buffer pool size 8192
Free buffers 6632
Database pages 1486
Old database pages 528
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 304, not young 115199
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1342, created 406, written 648
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 1 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1486, unzip_LRU len: 0
I/O sum[182]: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=366, Main thread ID=140301680187136 , state=sleeping
Number of rows inserted 49167, updated 363, deleted 0, read 578535
0.02 inserts/s, 0.09 updates/s, 0.00 deletes/s, 990.51 reads/s
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END OF INNODB MONITOR OUTPUT
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