Mecanismos de armazenamento

InnoDB

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

[ Variáveis | Pool de buffer | Status do InnoDB ]

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2026-09-24 16:38:50 0x7ac541b696c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 19 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 7602 srv_active, 0 srv_shutdown, 84324 srv_idle
srv_master_thread log flush and writes: 91926
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 328337
OS WAIT ARRAY INFO: signal count 132384
RW-shared spins 8528, rounds 318734, OS waits 10349
RW-excl spins 3934, rounds 28172, OS waits 631
RW-sx spins 258, rounds 2581, OS waits 29
Spin rounds per wait: 37.38 RW-shared, 7.16 RW-excl, 10.00 RW-sx
------------------------
LATEST FOREIGN KEY ERROR
------------------------
2026-09-23 21:17:13 0x7ac5427036c0 Error in foreign key constraint creation for table `siscomercio_mei`.`#sql-3f6583_10`.
A foreign key constraint of name `siscomercio_mei`.`itens_servico_ordem_servico_id_servico_foreign`
already exists. (Note that internally InnoDB adds 'databasename'
in front of the user-defined constraint name.)
Note that InnoDB's FOREIGN KEY system tables store
constraint names as case-insensitive, with the
MySQL standard latin1_swedish_ci collation. If you
create tables or databases whose names differ only in
the character case, then collisions in constraint
names can occur. Workaround: name your constraints
explicitly with unique names.
------------
TRANSACTIONS
------------
Trx id counter 132017
Purge done for trx's n:o < 132017 undo n:o < 0 state: running but idle
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 416462360621440, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 416462360617224, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 416462360613008, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (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
49435 OS file reads, 124510 OS file writes, 68051 OS fsyncs
3.74 reads/s, 16384 avg bytes/read, 17.26 writes/s, 8.89 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 2 merges
merged operations:
 insert 3, delete mark 0, delete 0
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 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)
Hash table size 4441, node heap has 1 buffer(s)
19.74 hash searches/s, 47.16 non-hash searches/s
---
LOG
---
Log sequence number 51908917
Log flushed up to   51908897
Pages flushed up to 51903476
Last checkpoint at  51890964
0 pending log flushes, 0 pending chkp writes
35559 log i/o's done, 4.47 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 261080
Buffer pool size   1003
Free buffers       739
Database pages     256
Old database pages 0
Modified db pages  29
Percent of dirty pages(LRU & free pages): 2.912
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 906, not young 114619
0.00 youngs/s, 0.00 non-youngs/s
Pages read 49401, created 6890, written 77069
3.74 reads/s, 0.00 creates/s, 11.05 writes/s
Buffer pool hit rate 980 / 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: 256, unzip_LRU len: 0
I/O sum[625]:cur[33], 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=4154755, Main thread ID=134987105945280, state: sleeping
Number of rows inserted 36948, updated 15468, deleted 15, read 910759
0.00 inserts/s, 3.05 updates/s, 0.00 deletes/s, 131.73 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 80189
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
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