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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2025-07-05 18:56:23 0x7f38a17fa700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 27 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 14 srv_active, 0 srv_shutdown, 621 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 24
OS WAIT ARRAY INFO: signal count 23
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 2, rounds 30, OS waits 1
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 15.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9796
Purge done for trx's n:o < 9789 undo n:o < 0 state: running but idle
History list length 67
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421357241870952, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421357241871824, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421357241870080, 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
1247 OS file reads, 365 OS file writes, 134 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 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 1 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 5 buffer(s)
257.10 hash searches/s, 82.37 non-hash searches/s
---
LOG
---
Log sequence number 50957583
Log buffer assigned up to 50957583
Log buffer completed up to 50957583
Log written up to 50957583
Log flushed up to 50957583
Added dirty pages up to 50957583
Pages flushed up to 50957583
Last checkpoint at 50957583
76 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 530388
Buffer pool size 8192
Free buffers 6909
Database pages 1270
Old database pages 450
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 68, not young 7
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1128, created 154, written 226
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: 1270, unzip_LRU len: 0
I/O sum[2]: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=368, Main thread ID=139881759041280 , state=sleeping
Number of rows inserted 185, updated 334, deleted 0, read 308654
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 587.02 reads/s
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END OF INNODB MONITOR OUTPUT
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