Mecanismos de armazenamento

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variáveis | Pool de buffer | Estado do InnoDB ]

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2026-05-03 13:54:52 0x1b7c INNODB MONITOR OUTPUT
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Per second averages calculated from the last 23 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 669 srv_active, 0 srv_shutdown, 568283 srv_idle
srv_master_thread log flush and writes: 568952
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 24933
OS WAIT ARRAY INFO: signal count 1715
RW-shared spins 1992, rounds 46914, OS waits 1434
RW-excl spins 1390, rounds 5070, OS waits 41
RW-sx spins 19, rounds 204, OS waits 4
Spin rounds per wait: 23.55 RW-shared, 3.65 RW-excl, 10.74 RW-sx
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LATEST FOREIGN KEY ERROR
------------------------
2026-04-27 20:04:57 0x35c Error in foreign key constraint of table `oficina_autocarvalho`.`if`:
Create  table `oficina_autocarvalho`.`if` with foreign key constraint failed. Referenced table `oficina_autocarvalho`.`car_entry_checklists` not found in the data dictionary near ' FOREIGN KEY (`checklist_id`) REFERENCES `car_entry_checklists` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=21 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci'.
------------
TRANSACTIONS
------------
Trx id counter 568845
Purge done for trx's n:o < 568845 undo n:o < 0 state: running but idle
History list length 2
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283065794675264, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283065794671096, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283065794666928, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283065794662760, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283065794654424, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283065794658592, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283065794650256, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (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
25357 OS file reads, 18636 OS file writes, 8336 OS fsyncs
1.87 reads/s, 16384 avg bytes/read, 8.48 writes/s, 5.09 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 12, seg size 14, 8 merges
merged operations:
 insert 0, delete mark 618, delete 133
discarded operations:
 insert 0, delete mark 0, delete 0
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
9.17 hash searches/s, 24.17 non-hash searches/s
---
LOG
---
Log sequence number 374158088
Log flushed up to   374158068
Pages flushed up to 374147152
Last checkpoint at  374143595
0 pending log flushes, 0 pending chkp writes
5302 log i/o's done, 2.78 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 2155944
Buffer pool size   1003
Free buffers       733
Database pages     263
Old database pages 0
Modified db pages  29
Percent of dirty pages(LRU & free pages): 2.909
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 475, not young 82419
0.00 youngs/s, 0.00 non-youngs/s
Pages read 24519, created 584, written 12313
1.87 reads/s, 0.04 creates/s, 4.87 writes/s
Buffer pool hit rate 978 / 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: 263, unzip_LRU len: 0
I/O sum[517]:cur[13], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=5400, Main thread ID=7152, state: sleeping
Number of rows inserted 538, updated 2016, deleted 567, read 1340338
0.00 inserts/s, 1.35 updates/s, 0.00 deletes/s, 8.65 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 18245
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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