Mecanismos de armazenamento
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
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Variáveis
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Pool de buffer
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Status do InnoDB
]
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2026-09-26 17:12:07 0x7f9fac59a6c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 44 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 613129 srv_active, 0 srv_shutdown, 436639 srv_idle
srv_master_thread log flush and writes: 1049692
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 3679113
OS WAIT ARRAY INFO: signal count 2383263
RW-shared spins 350372, rounds 10504583, OS waits 349545
RW-excl spins 2886, rounds 87165, OS waits 2784
RW-sx spins 17, rounds 480, OS waits 12
Spin rounds per wait: 29.98 RW-shared, 30.20 RW-excl, 28.24 RW-sx
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TRANSACTIONS
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Trx id counter 1899643
Purge done for trx's n:o < 1899643 undo n:o < 0 state: running but idle
History list length 8
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421798779593088, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421798779588872, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421798779584656, 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
615457 OS file reads, 7172847 OS file writes, 4508834 OS fsyncs
1.86 reads/s, 16384 avg bytes/read, 16.30 writes/s, 8.25 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 4441, node heap has 0 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 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
31.02 hash searches/s, 65.50 non-hash searches/s
---
LOG
---
Log sequence number 915220878
Log flushed up to 915220858
Pages flushed up to 915200412
Last checkpoint at 915197771
0 pending log flushes, 0 pending chkp writes
2259146 log i/o's done, 5.14 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 75640
Buffer pool size 1002
Free buffers 737
Database pages 261
Old database pages 0
Modified db pages 42
Percent of dirty pages(LRU & free pages): 4.204
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 615423, created 30251, written 4116221
1.86 reads/s, 0.11 creates/s, 9.91 writes/s
Buffer pool hit rate 992 / 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: 261, unzip_LRU len: 0
I/O sum[686]: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=284, Main thread ID=140322612963008, state: sleeping
Number of rows inserted 57, updated 913678, deleted 0, read 13420629
0.00 inserts/s, 3.70 updates/s, 0.00 deletes/s, 29.66 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 64421
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 5.61 reads/s
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END OF INNODB MONITOR OUTPUT
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