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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2025-12-05 23:23:07 0xb4e8 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 35 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 10706 srv_active, 0 srv_shutdown, 134106 srv_idle
srv_master_thread log flush and writes: 144812
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 15525
OS WAIT ARRAY INFO: signal count 12659
RW-shared spins 6674, rounds 196603, OS waits 6429
RW-excl spins 727, rounds 9221, OS waits 169
RW-sx spins 2, rounds 60, OS waits 2
Spin rounds per wait: 29.46 RW-shared, 12.68 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 36482
Purge done for trx's n:o < 36482 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283119929098600, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283119929094432, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283119929090264, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283119929086096, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
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
39821 OS file reads, 110831 OS file writes, 67757 OS fsyncs
0.46 reads/s, 16384 avg bytes/read, 1.63 writes/s, 0.66 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 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 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
2.91 hash searches/s, 7.74 non-hash searches/s
---
LOG
---
Log sequence number 19833669
Log flushed up to 19833243
Pages flushed up to 19833243
Last checkpoint at 19820494
0 pending log flushes, 0 pending chkp writes
33432 log i/o's done, 0.39 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 150240
Buffer pool size 1003
Free buffers 743
Database pages 256
Old database pages 0
Modified db pages 20
Percent of dirty pages(LRU & free pages): 2.000
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1126, not young 3305
0.00 youngs/s, 0.00 non-youngs/s
Pages read 39758, created 590, written 65790
0.44 reads/s, 0.00 creates/s, 1.08 writes/s
Buffer pool hit rate 982 / 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[251]:cur[37], 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=4936, Main thread ID=7084, state: sleeping
Number of rows inserted 111, updated 13468, deleted 31, read 626623
0.00 inserts/s, 0.29 updates/s, 0.00 deletes/s, 5.74 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 33754
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
============================
