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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Estado do InnoDB
]
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2026-07-26 22:18:44 0x239c INNODB MONITOR OUTPUT
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Per second averages calculated from the last 9 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 3009 srv_active, 0 srv_shutdown, 195975 srv_idle
srv_master_thread log flush and writes: 198984
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 1841
OS WAIT ARRAY INFO: signal count 1947
RW-shared spins 11766, rounds 113676, OS waits 1307
RW-excl spins 1264, rounds 7368, OS waits 97
RW-sx spins 30, rounds 392, OS waits 11
Spin rounds per wait: 9.66 RW-shared, 5.83 RW-excl, 13.07 RW-sx
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TRANSACTIONS
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Trx id counter 167467
Purge done for trx's n:o < 167467 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283040646906072, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283040646901904, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
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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
43243 OS file reads, 23801 OS file writes, 9869 OS fsyncs
0.56 reads/s, 16384 avg bytes/read, 0.67 writes/s, 0.67 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 96, seg size 98, 1174 merges
merged operations:
insert 6064, delete mark 2625, delete 1636
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 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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
3.78 hash searches/s, 9.67 non-hash searches/s
---
LOG
---
Log sequence number 516559095
Log flushed up to 516559075
Pages flushed up to 516551953
Last checkpoint at 516551944
0 pending log flushes, 0 pending chkp writes
6187 log i/o's done, 0.67 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 1199416
Buffer pool size 1003
Free buffers 735
Database pages 262
Old database pages 0
Modified db pages 15
Percent of dirty pages(LRU & free pages): 1.503
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 474, not young 223348
0.00 youngs/s, 0.00 non-youngs/s
Pages read 42688, created 430, written 16182
0.56 reads/s, 0.11 creates/s, 0.00 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: 262, unzip_LRU len: 0
I/O sum[213]: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=15100, Main thread ID=11300, state: sleeping
Number of rows inserted 2565, updated 4784, deleted 513, read 5833942
0.00 inserts/s, 0.67 updates/s, 0.00 deletes/s, 3.89 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 81413
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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