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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2026-01-13 22:59:23 0x7f7b3405e700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 23 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 47 srv_active, 0 srv_shutdown, 767 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 74
OS WAIT ARRAY INFO: signal count 74
RW-shared spins 2, rounds 3, OS waits 1
RW-excl spins 2, rounds 60, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.50 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10005
Purge done for trx's n:o < 10002 undo n:o < 0 state: running but idle
History list length 54
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421642277431912, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421642277431040, 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
1327 OS file reads, 1081 OS file writes, 451 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 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 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
159.56 hash searches/s, 67.26 non-hash searches/s
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LOG
---
Log sequence number 51015222
Log buffer assigned up to 51015222
Log buffer completed up to 51015222
Log written up to 51015222
Log flushed up to 51015222
Added dirty pages up to 51015222
Pages flushed up to 51015222
Last checkpoint at 51015222
319 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 137363456
Dictionary memory allocated 675138
Buffer pool size 8192
Free buffers 6831
Database pages 1342
Old database pages 475
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 272, not young 1305
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1194, created 163, written 641
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: 1342, 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=368, Main thread ID=140166791370496 , state=sleeping
Number of rows inserted 310, updated 453, deleted 0, read 622110
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 297.90 reads/s
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END OF INNODB MONITOR OUTPUT
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