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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2026-03-04 14:33:51 0x7f69c57db700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 0 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 22 srv_active, 0 srv_shutdown, 161 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 36
OS WAIT ARRAY INFO: signal count 46
RW-shared spins 8, rounds 10, OS waits 2
RW-excl spins 8, rounds 153, OS waits 6
RW-sx spins 1, rounds 30, OS waits 1
Spin rounds per wait: 1.25 RW-shared, 19.12 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 9895
Purge done for trx's n:o < 9894 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421568307282232, not started flushing log
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421568307280488, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421568307279616, 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: 1; buffer pool: 0
1302 OS file reads, 1004 OS file writes, 378 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 2000.00 writes/s, 1000.00 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 0 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 7 buffer(s)
567000.00 hash searches/s, 312000.00 non-hash searches/s
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LOG
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Log sequence number 51099545
Log buffer assigned up to 51099545
Log buffer completed up to 51099545
Log written up to 51099545
Log flushed up to 51099201
Added dirty pages up to 51099201
Pages flushed up to 51099201
Last checkpoint at 51099201
310 log i/o's done, 2.00 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 713409
Buffer pool size 8192
Free buffers 6852
Database pages 1325
Old database pages 469
Modified db pages 4
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 271, not young 653
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1155, created 173, written 587
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: 1325, unzip_LRU len: 0
I/O sum[196]: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
1 read views open inside InnoDB
Process ID=370, Main thread ID=140092820616960 , state=sleeping
Number of rows inserted 185, updated 470, deleted 0, read 1852591
0.00 inserts/s, 1000.00 updates/s, 0.00 deletes/s, 1009000.00 reads/s
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END OF INNODB MONITOR OUTPUT
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