存储引擎
InnoDB
Supports transactions, row-level locking, and foreign keys
[
变量
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缓冲池
|
InnoDB 状态
]
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2025-04-03 15:22:33 0x7fa1ac059700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 39 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 34 srv_active, 0 srv_shutdown, 370 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 67
OS WAIT ARRAY INFO: signal count 67
RW-shared spins 3, rounds 4, OS waits 1
RW-excl spins 3, rounds 90, OS waits 3
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.33 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9992
Purge done for trx's n:o < 9991 undo n:o < 0 state: running but idle
History list length 24
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421807859977680, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421807859976808, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421807859975936, 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, 1406 OS file writes, 533 OS fsyncs
0.15 reads/s, 13824 avg bytes/read, 0.21 writes/s, 0.18 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 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 2 buffer(s)
Hash table size 34679, node heap has 31 buffer(s)
4470.22 hash searches/s, 121.69 non-hash searches/s
---
LOG
---
Log sequence number 51113843
Log buffer assigned up to 51113843
Log buffer completed up to 51113843
Log written up to 51113843
Log flushed up to 51113843
Added dirty pages up to 51113843
Pages flushed up to 51113843
Last checkpoint at 51113843
405 log i/o's done, 0.05 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 741908
Buffer pool size 8192
Free buffers 6595
Database pages 1525
Old database pages 548
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 119, not young 650
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1348, created 180, written 861
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: 1525, unzip_LRU len: 0
I/O sum[8]: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=140332374112000 , state=sleeping
Number of rows inserted 194, updated 501, deleted 0, read 1487567
0.00 inserts/s, 0.03 updates/s, 0.00 deletes/s, 4571.24 reads/s
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END OF INNODB MONITOR OUTPUT
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