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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2024-12-20 19:39:51 0x7f2a89e07700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 40 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 54 srv_active, 0 srv_shutdown, 488 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 239
OS WAIT ARRAY INFO: signal count 238
RW-shared spins 43, rounds 80, OS waits 37
RW-excl spins 57, rounds 940, OS waits 25
RW-sx spins 1, rounds 30, OS waits 1
Spin rounds per wait: 1.86 RW-shared, 16.49 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 10669
Purge done for trx's n:o < 10660 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421296721443432, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421296721442560, 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
1209 OS file reads, 4609 OS file writes, 1684 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 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 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
755.53 hash searches/s, 319.67 non-hash searches/s
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LOG
---
Log sequence number 52625148
Log buffer assigned up to 52625148
Log buffer completed up to 52625148
Log written up to 52625148
Log flushed up to 52625148
Added dirty pages up to 52625148
Pages flushed up to 52625148
Last checkpoint at 52625148
2087 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 733417
Buffer pool size 8192
Free buffers 6670
Database pages 1510
Old database pages 537
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1397, not young 703
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1104, created 418, written 2209
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: 1510, 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=370, Main thread ID=139821236549376 , state=sleeping
Number of rows inserted 1637, updated 1865, deleted 551, read 925522
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1907.50 reads/s
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END OF INNODB MONITOR OUTPUT
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