Механізми зберігання
InnoDB
Supports transactions, row-level locking, and foreign keys
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Змінні
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Буферний пул
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Статус InnoDB
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2026-01-03 12:53:23 0x7fd31805c700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 28 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 27 srv_active, 0 srv_shutdown, 427 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 48
OS WAIT ARRAY INFO: signal count 48
RW-shared spins 2, rounds 3, 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: 1.50 RW-shared, 0.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9853
Purge done for trx's n:o < 9853 undo n:o < 0 state: running but idle
History list length 82
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422019654577616, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422019654576744, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422019654575872, 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
1223 OS file reads, 694 OS file writes, 294 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.75 writes/s, 0.54 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 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
275.35 hash searches/s, 103.92 non-hash searches/s
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LOG
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Log sequence number 51013280
Log buffer assigned up to 51013280
Log buffer completed up to 51013280
Log written up to 51013280
Log flushed up to 51013280
Added dirty pages up to 51013280
Pages flushed up to 51013280
Last checkpoint at 51013280
194 log i/o's done, 0.14 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 610139
Buffer pool size 8192
Free buffers 6920
Database pages 1258
Old database pages 445
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 107, not young 122
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1104, created 166, written 402
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: 1258, unzip_LRU len: 0
I/O sum[61]: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=140544169686784 , state=sleeping
Number of rows inserted 253, updated 383, deleted 1, read 305165
1.61 inserts/s, 0.00 updates/s, 0.04 deletes/s, 459.13 reads/s
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END OF INNODB MONITOR OUTPUT
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