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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2026-04-02 14:34:38 0x7f35755b2700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 60 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 20 srv_active, 0 srv_shutdown, 210 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 58
OS WAIT ARRAY INFO: signal count 58
RW-shared spins 1, rounds 1, 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: 1.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9864
Purge done for trx's n:o < 9864 undo n:o < 0 state: running but idle
History list length 5
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421343619218896, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421343619218024, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421343619217152, 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
1304 OS file reads, 724 OS file writes, 262 OS fsyncs
0.17 reads/s, 13312 avg bytes/read, 4.28 writes/s, 1.20 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 1 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
1471.61 hash searches/s, 1008.28 non-hash searches/s
---
LOG
---
Log sequence number 50978045
Log buffer assigned up to 50978045
Log buffer completed up to 50978045
Log written up to 50978045
Log flushed up to 50978045
Added dirty pages up to 50978045
Pages flushed up to 50978045
Last checkpoint at 50978045
168 log i/o's done, 0.82 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 644932
Buffer pool size 8192
Free buffers 6849
Database pages 1326
Old database pages 509
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1183, created 143, written 474
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 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: 1326, unzip_LRU len: 0
I/O sum[0]: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=368, Main thread ID=139868135941888 , state=sleeping
Number of rows inserted 14, updated 364, deleted 0, read 730600
0.03 inserts/s, 0.22 updates/s, 0.00 deletes/s, 2229.01 reads/s
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END OF INNODB MONITOR OUTPUT
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