Механизмы хранилища
InnoDB
Supports transactions, row-level locking, and foreign keys
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Переменные
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Буферный пул
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Состояние InnoDB
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2025-11-03 20:05:29 0x7ff838064700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 38 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 16 srv_active, 0 srv_shutdown, 265 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 20
OS WAIT ARRAY INFO: signal count 20
RW-shared spins 1, rounds 2, OS waits 1
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 2.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9791
Purge done for trx's n:o < 9790 undo n:o < 0 state: running but idle
History list length 63
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422179061189224, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422179061188352, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
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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
1166 OS file reads, 523 OS file writes, 202 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.39 writes/s, 0.32 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 0 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 4 buffer(s)
583.06 hash searches/s, 344.02 non-hash searches/s
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LOG
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Log sequence number 50990911
Log buffer assigned up to 50990911
Log buffer completed up to 50990911
Log written up to 50990911
Log flushed up to 50990911
Added dirty pages up to 50990911
Pages flushed up to 50990911
Last checkpoint at 50990911
125 log i/o's done, 0.13 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 137363456
Dictionary memory allocated 452308
Buffer pool size 8192
Free buffers 6957
Database pages 1225
Old database pages 432
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 93, not young 28
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1073, created 155, written 324
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: 1225, unzip_LRU len: 0
I/O sum[6]: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=140703575500544 , state=sleeping
Number of rows inserted 89, updated 354, deleted 0, read 262746
0.03 inserts/s, 0.00 updates/s, 0.00 deletes/s, 854.03 reads/s
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END OF INNODB MONITOR OUTPUT
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