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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2025-12-24 03:54:33 0x7f75b4074700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 37 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 23 srv_active, 0 srv_shutdown, 502 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 45
OS WAIT ARRAY INFO: signal count 45
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 3, rounds 90, OS waits 3
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9834
Purge done for trx's n:o < 9833 undo n:o < 0 state: running but idle
History list length 80
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421618507229800, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421618507228928, 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
1271 OS file reads, 616 OS file writes, 235 OS fsyncs
0.11 reads/s, 12544 avg bytes/read, 0.27 writes/s, 0.22 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 0 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 3 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
197.40 hash searches/s, 82.40 non-hash searches/s
---
LOG
---
Log sequence number 50980684
Log buffer assigned up to 50980684
Log buffer completed up to 50980684
Log written up to 50980684
Log flushed up to 50980684
Added dirty pages up to 50980684
Pages flushed up to 50980684
Last checkpoint at 50980684
130 log i/o's done, 0.11 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 832042
Buffer pool size 8192
Free buffers 6871
Database pages 1304
Old database pages 467
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 120, not young 253
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1156, created 241, written 359
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: 1304, unzip_LRU len: 0
I/O sum[29]: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=140143018047232 , state=sleeping
Number of rows inserted 32889, updated 360, deleted 0, read 247284
0.00 inserts/s, 0.03 updates/s, 0.00 deletes/s, 340.80 reads/s
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END OF INNODB MONITOR OUTPUT
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