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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2025-11-04 01:52:37 0x7f54c80a5700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 43 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 16 srv_active, 0 srv_shutdown, 393 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 45
OS WAIT ARRAY INFO: signal count 45
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 9893
Purge done for trx's n:o < 9893 undo n:o < 0 state: running but idle
History list length 114
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421477136308840, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421477136307968, 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
1456 OS file reads, 551 OS file writes, 194 OS fsyncs
0.02 reads/s, 16384 avg bytes/read, 1.09 writes/s, 0.58 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 2 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 4 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
443.34 hash searches/s, 133.21 non-hash searches/s
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LOG
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Log sequence number 50976692
Log buffer assigned up to 50976692
Log buffer completed up to 50976692
Log written up to 50976692
Log flushed up to 50976692
Added dirty pages up to 50976692
Pages flushed up to 50976692
Last checkpoint at 50976692
160 log i/o's done, 0.42 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 606324
Buffer pool size 8192
Free buffers 6696
Database pages 1478
Old database pages 545
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 210, not young 321036
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1333, created 154, written 327
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: 1478, unzip_LRU len: 0
I/O sum[24]: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=370, Main thread ID=140001650353920 , state=sleeping
Number of rows inserted 138, updated 381, deleted 0, read 2407720
1.05 inserts/s, 0.19 updates/s, 0.00 deletes/s, 1122.00 reads/s
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END OF INNODB MONITOR OUTPUT
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