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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2026-06-25 00:48:37 0x11bc INNODB MONITOR OUTPUT
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Per second averages calculated from the last 60 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 715 srv_active, 0 srv_shutdown, 534843 srv_idle
srv_master_thread log flush and writes: 535558
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 15249
OS WAIT ARRAY INFO: signal count 1076
RW-shared spins 1805, rounds 18623, OS waits 460
RW-excl spins 300, rounds 1462, OS waits 22
RW-sx spins 65, rounds 204, OS waits 0
Spin rounds per wait: 10.32 RW-shared, 4.87 RW-excl, 3.14 RW-sx
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TRANSACTIONS
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Trx id counter 882554
Purge done for trx's n:o < 882554 undo n:o < 0 state: running
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283232881570008, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283232881565840, 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
30074 OS file reads, 14876 OS file writes, 6748 OS fsyncs
19.10 reads/s, 16384 avg bytes/read, 15.65 writes/s, 7.53 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 8, seg size 10, 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 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)
18.57 hash searches/s, 62.05 non-hash searches/s
---
LOG
---
Log sequence number 550100009
Log flushed up to 550099989
Pages flushed up to 550093015
Last checkpoint at 549971495
0 pending log flushes, 0 pending chkp writes
4170 log i/o's done, 5.08 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 2175976
Buffer pool size 1003
Free buffers 738
Database pages 257
Old database pages 0
Modified db pages 25
Percent of dirty pages(LRU & free pages): 2.510
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 360, not young 105101
0.00 youngs/s, 0.00 non-youngs/s
Pages read 29201, created 274, written 9697
19.10 reads/s, 0.45 creates/s, 9.38 writes/s
Buffer pool hit rate 939 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 2.13/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 257, unzip_LRU len: 0
I/O sum[1578]:cur[7], 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=5872, Main thread ID=7860, state: sleeping
Number of rows inserted 102, updated 2597, deleted 806, read 2031812
0.00 inserts/s, 4.02 updates/s, 0.00 deletes/s, 903.97 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 44627
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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