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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2025-07-14 22:41:51 0x7f57592e3700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 15 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 19 srv_active, 0 srv_shutdown, 643 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 56
OS WAIT ARRAY INFO: signal count 56
RW-shared spins 0, rounds 0, 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: 0.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9882
Purge done for trx's n:o < 9881 undo n:o < 0 state: running but idle
History list length 1
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421489193253480, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421489193252608, 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
1364 OS file reads, 738 OS file writes, 231 OS fsyncs
0.40 reads/s, 13824 avg bytes/read, 0.60 writes/s, 0.47 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 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 3 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
480.57 hash searches/s, 111.93 non-hash searches/s
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LOG
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Log sequence number 50981776
Log buffer assigned up to 50981776
Log buffer completed up to 50981776
Log written up to 50981776
Log flushed up to 50981776
Added dirty pages up to 50981776
Pages flushed up to 50981776
Last checkpoint at 50981776
162 log i/o's done, 0.19 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 645787
Buffer pool size 8192
Free buffers 6791
Database pages 1383
Old database pages 490
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 306, not young 863
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1239, created 150, written 500
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 15 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1383, unzip_LRU len: 0
I/O sum[384]: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=369, Main thread ID=140013707659008 , state=sleeping
Number of rows inserted 93, updated 377, deleted 0, read 560172
0.00 inserts/s, 0.07 updates/s, 0.00 deletes/s, 1044.86 reads/s
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END OF INNODB MONITOR OUTPUT
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