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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2026-03-09 06:46:57 0x7f78b81ab700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 53 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 2 srv_active, 0 srv_shutdown, 66 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 2
OS WAIT ARRAY INFO: signal count 3
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 3, rounds 4, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 1.33 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9740
Purge done for trx's n:o < 9740 undo n:o < 0 state: running but idle
History list length 49
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421631628680656, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421631628679784, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421631628678912, 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
1159 OS file reads, 220 OS file writes, 44 OS fsyncs
0.38 reads/s, 16384 avg bytes/read, 0.28 writes/s, 0.19 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 0 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 2 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
5525.35 hash searches/s, 4523.39 non-hash searches/s
---
LOG
---
Log sequence number 50949433
Log buffer assigned up to 50949433
Log buffer completed up to 50949433
Log written up to 50949433
Log flushed up to 50949433
Added dirty pages up to 50949433
Pages flushed up to 50949433
Last checkpoint at 50949433
22 log i/o's done, 0.09 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 422087
Buffer pool size 8192
Free buffers 6965
Database pages 1214
Old database pages 467
Modified db pages 3
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 1070, created 144, written 162
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: 1214, 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=372, Main thread ID=140156143347456 , state=sleeping
Number of rows inserted 47, updated 316, deleted 0, read 462043
0.89 inserts/s, 0.02 updates/s, 0.00 deletes/s, 6924.78 reads/s
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END OF INNODB MONITOR OUTPUT
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