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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2025-10-31 08:18:48 0x7f39c0136700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 57 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 22 srv_active, 0 srv_shutdown, 157 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 46
OS WAIT ARRAY INFO: signal count 46
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 2, rounds 60, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9902
Purge done for trx's n:o < 9902 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421361150437992, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421361150437120, 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
1302 OS file reads, 802 OS file writes, 238 OS fsyncs
0.39 reads/s, 13591 avg bytes/read, 6.02 writes/s, 1.68 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 0 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
194.07 hash searches/s, 91.56 non-hash searches/s
---
LOG
---
Log sequence number 50988735
Log buffer assigned up to 50988735
Log buffer completed up to 50988735
Log written up to 50988735
Log flushed up to 50988735
Added dirty pages up to 50988735
Pages flushed up to 50988735
Last checkpoint at 50988735
197 log i/o's done, 1.14 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 530967
Buffer pool size 8192
Free buffers 6838
Database pages 1341
Old database pages 475
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 252, not young 835
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1197, created 165, written 528
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 5 / 1000 not 3 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1341, unzip_LRU len: 0
I/O sum[264]: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=139885663946496 , state=sleeping
Number of rows inserted 102, updated 381, deleted 0, read 65259
1.02 inserts/s, 0.47 updates/s, 0.00 deletes/s, 359.56 reads/s
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END OF INNODB MONITOR OUTPUT
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