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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2025-07-14 07:52:49 0x7f0968dbd700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 54 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 30 srv_active, 0 srv_shutdown, 389 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 77
OS WAIT ARRAY INFO: signal count 76
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 2, rounds 60, OS waits 2
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 9909
Purge done for trx's n:o < 9907 undo n:o < 0 state: running but idle
History list length 19
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421154449934952, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421154449934080, 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
1274 OS file reads, 849 OS file writes, 347 OS fsyncs
0.24 reads/s, 14020 avg bytes/read, 0.93 writes/s, 0.50 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 3 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
203.59 hash searches/s, 51.81 non-hash searches/s
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LOG
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Log sequence number 50985040
Log buffer assigned up to 50985040
Log buffer completed up to 50985040
Log written up to 50985040
Log flushed up to 50985040
Added dirty pages up to 50985040
Pages flushed up to 50985040
Last checkpoint at 50985040
219 log i/o's done, 0.35 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 640756
Buffer pool size 8192
Free buffers 6892
Database pages 1285
Old database pages 494
Modified db pages 0
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 1143, created 142, written 533
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: 1285, unzip_LRU len: 0
I/O sum[0]: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=364, Main thread ID=139678965757696 , state=sleeping
Number of rows inserted 24, updated 378, deleted 0, read 304610
0.00 inserts/s, 0.17 updates/s, 0.00 deletes/s, 517.60 reads/s
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END OF INNODB MONITOR OUTPUT
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