Mecanismos de armazenamento
InnoDB
Supports transactions, row-level locking, and foreign keys
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Variáveis
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Pool de buffer
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Status do InnoDB
]
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2025-09-18 05:51:05 0x7f122409f700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 13 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 34 srv_active, 0 srv_shutdown, 283 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 122
OS WAIT ARRAY INFO: signal count 120
RW-shared spins 17, rounds 32, OS waits 15
RW-excl spins 30, rounds 552, OS waits 16
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.88 RW-shared, 18.40 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10034
Purge done for trx's n:o < 10034 undo n:o < 0 state: running but idle
History list length 9
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421191031111120, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421191031110248, not started
mysql tables in use 4, locked 0
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421191031109376, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (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
1417 OS file reads, 1855 OS file writes, 511 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
778.32 hash searches/s, 301.90 non-hash searches/s
---
LOG
---
Log sequence number 51295985
Log buffer assigned up to 51295985
Log buffer completed up to 51295985
Log written up to 51295985
Log flushed up to 51295985
Added dirty pages up to 51295985
Pages flushed up to 51295985
Last checkpoint at 51295985
494 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 667996
Buffer pool size 8192
Free buffers 6748
Database pages 1427
Old database pages 506
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 291, not young 217
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1268, created 247, written 1202
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 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: 1427, unzip_LRU len: 0
I/O sum[207]: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=370, Main thread ID=139715542976256 , state=sleeping
Number of rows inserted 16488, updated 448, deleted 221, read 265133
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1282.75 reads/s
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END OF INNODB MONITOR OUTPUT
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