Mecanismos de armazenamento
InnoDB
Supports transactions, row-level locking, and foreign keys
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Variáveis
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Pool de buffer
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Status do InnoDB
]
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2025-11-15 12:35:33 0x7fa8468e6700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 41 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 12 srv_active, 0 srv_shutdown, 273 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 23
OS WAIT ARRAY INFO: signal count 23
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 1, rounds 30, OS waits 1
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 9789
Purge done for trx's n:o < 9788 undo n:o < 0 state: running but idle
History list length 65
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421836756340176, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421836756339304, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421836756338432, 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
1197 OS file reads, 486 OS file writes, 166 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 4 buffer(s)
532.79 hash searches/s, 270.65 non-hash searches/s
---
LOG
---
Log sequence number 50981823
Log buffer assigned up to 50981823
Log buffer completed up to 50981823
Log written up to 50981823
Log flushed up to 50981823
Added dirty pages up to 50981823
Pages flushed up to 50981823
Last checkpoint at 50981823
107 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 525038
Buffer pool size 8192
Free buffers 6938
Database pages 1243
Old database pages 438
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 56, not young 34
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1096, created 234, written 275
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: 1243, 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=363, Main thread ID=140361272858368 , state=sleeping
Number of rows inserted 32810, updated 341, deleted 0, read 251485
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1068.85 reads/s
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END OF INNODB MONITOR OUTPUT
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