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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2025-12-27 02:22:44 0x7ff7dc0e9700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 51 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 13 srv_active, 0 srv_shutdown, 403 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 29
OS WAIT ARRAY INFO: signal count 29
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 2, rounds 60, OS waits 2
RW-sx spins 1, rounds 30, OS waits 1
Spin rounds per wait: 1.00 RW-shared, 30.00 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 9867
Purge done for trx's n:o < 9867 undo n:o < 0 state: running but idle
History list length 98
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422178031172200, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422178031171328, 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
1267 OS file reads, 717 OS file writes, 254 OS fsyncs
1.78 reads/s, 16215 avg bytes/read, 7.49 writes/s, 2.53 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 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 0 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
633.89 hash searches/s, 417.87 non-hash searches/s
---
LOG
---
Log sequence number 51038828
Log buffer assigned up to 51038828
Log buffer completed up to 51038828
Log written up to 51038828
Log flushed up to 51038828
Added dirty pages up to 51038828
Pages flushed up to 51038828
Last checkpoint at 51038828
224 log i/o's done, 3.08 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 548509
Buffer pool size 8192
Free buffers 6851
Database pages 1329
Old database pages 505
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1172, created 157, written 419
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: 1329, unzip_LRU len: 0
I/O sum[0]: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=369, Main thread ID=140702546605824 , state=sleeping
Number of rows inserted 81, updated 437, deleted 0, read 308517
1.37 inserts/s, 2.24 updates/s, 0.00 deletes/s, 1119.17 reads/s
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END OF INNODB MONITOR OUTPUT
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