存储引擎
InnoDB
Supports transactions, row-level locking, and foreign keys
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变量
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缓冲池
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InnoDB 状态
]
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2025-11-16 11:03:48 0x7f1b340e9700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 60 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 10 srv_active, 0 srv_shutdown, 171 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 26
OS WAIT ARRAY INFO: signal count 26
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9826
Purge done for trx's n:o < 9824 undo n:o < 0 state: running but idle
History list length 89
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421229812578920, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421229812578048, 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
1278 OS file reads, 433 OS file writes, 147 OS fsyncs
0.25 reads/s, 13312 avg bytes/read, 0.63 writes/s, 0.42 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 0 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 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 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
327.86 hash searches/s, 132.75 non-hash searches/s
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LOG
---
Log sequence number 50966004
Log buffer assigned up to 50966004
Log buffer completed up to 50966004
Log written up to 50966004
Log flushed up to 50966004
Added dirty pages up to 50966004
Pages flushed up to 50966004
Last checkpoint at 50966004
110 log i/o's done, 0.22 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 543464
Buffer pool size 8192
Free buffers 6859
Database pages 1322
Old database pages 471
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 134, not young 1659
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1179, created 149, written 266
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 7 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1322, unzip_LRU len: 0
I/O sum[27]: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=369, Main thread ID=139754323506944 , state=sleeping
Number of rows inserted 93, updated 356, deleted 0, read 143465
0.75 inserts/s, 0.10 updates/s, 0.00 deletes/s, 573.19 reads/s
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END OF INNODB MONITOR OUTPUT
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