Mecanismos de armazenamento
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variáveis
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Pool de buffer
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Estado do InnoDB
]
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2026-03-18 09:54:36 0x7f779c0a1700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 40 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 85 srv_active, 0 srv_shutdown, 442 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 175
OS WAIT ARRAY INFO: signal count 174
RW-shared spins 9, rounds 17, OS waits 8
RW-excl spins 9, rounds 270, OS waits 9
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.89 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10325
Purge done for trx's n:o < 10324 undo n:o < 0 state: running but idle
History list length 8
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421627137358440, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421627137357568, 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
1510 OS file reads, 2933 OS file writes, 1205 OS fsyncs
0.60 reads/s, 14464 avg bytes/read, 5.20 writes/s, 1.60 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 1 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 0 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
1909.80 hash searches/s, 1442.36 non-hash searches/s
---
LOG
---
Log sequence number 51389717
Log buffer assigned up to 51389717
Log buffer completed up to 51389717
Log written up to 51389717
Log flushed up to 51389717
Added dirty pages up to 51389717
Pages flushed up to 51389717
Last checkpoint at 51389717
946 log i/o's done, 0.93 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 956568
Buffer pool size 8192
Free buffers 6629
Database pages 1546
Old database pages 551
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 773, not young 841
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1323, created 229, written 1730
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: 1546, unzip_LRU len: 0
I/O sum[177]: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=374, Main thread ID=140151721215744 , state=sleeping
Number of rows inserted 552, updated 822, deleted 0, read 1307748
0.17 inserts/s, 0.25 updates/s, 0.00 deletes/s, 2733.01 reads/s
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END OF INNODB MONITOR OUTPUT
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