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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2025-11-19 11:31:00 0x7fa0dc0e9700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 14 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 6 srv_active, 0 srv_shutdown, 7 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 30
OS WAIT ARRAY INFO: signal count 30
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9811
Purge done for trx's n:o < 9811 undo n:o < 0 state: running but idle
History list length 80
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421803978267240, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421803978266368, 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
1196 OS file reads, 292 OS file writes, 95 OS fsyncs
79.73 reads/s, 20517 avg bytes/read, 19.47 writes/s, 6.33 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 6 buffer(s)
1020.93 hash searches/s, 718.52 non-hash searches/s
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LOG
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Log sequence number 50963653
Log buffer assigned up to 50963653
Log buffer completed up to 50963653
Log written up to 50963653
Log flushed up to 50963653
Added dirty pages up to 50963653
Pages flushed up to 50949291
Last checkpoint at 50949291
96 log i/o's done, 6.40 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 453555
Buffer pool size 8192
Free buffers 6936
Database pages 1244
Old database pages 479
Modified db pages 75
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 1101, created 143, written 161
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 984 / 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: 1244, unzip_LRU len: 0
I/O sum[0]:cur[2], 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=140328494356224 , state=sleeping
Number of rows inserted 8, updated 347, deleted 0, read 30363
0.57 inserts/s, 24.78 updates/s, 0.00 deletes/s, 2168.63 reads/s
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END OF INNODB MONITOR OUTPUT
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