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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2025-07-15 07:39:28 0x7fc6380aa700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 32 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 22 srv_active, 0 srv_shutdown, 497 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 133
OS WAIT ARRAY INFO: signal count 132
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 5, rounds 150, OS waits 5
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 10130
Purge done for trx's n:o < 10129 undo n:o < 0 state: running but idle
History list length 5
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421964446694864, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421964446693992, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421964446693120, 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
1283 OS file reads, 1320 OS file writes, 433 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.12 writes/s, 0.09 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 1 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 0 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 5 buffer(s)
299.21 hash searches/s, 79.44 non-hash searches/s
---
LOG
---
Log sequence number 51049888
Log buffer assigned up to 51049888
Log buffer completed up to 51049888
Log written up to 51049888
Log flushed up to 51049888
Added dirty pages up to 51049888
Pages flushed up to 51049172
Last checkpoint at 51049172
419 log i/o's done, 0.12 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 623514
Buffer pool size 8192
Free buffers 6840
Database pages 1339
Old database pages 474
Modified db pages 7
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 439, not young 1249
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1186, created 165, written 809
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: 1339, 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=371, Main thread ID=140488961353472 , state=sleeping
Number of rows inserted 348, updated 463, deleted 0, read 235732
0.00 inserts/s, 0.06 updates/s, 0.00 deletes/s, 587.11 reads/s
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END OF INNODB MONITOR OUTPUT
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