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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2025-07-05 18:48:50 0x7f38a1522700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 52 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 3 srv_active, 0 srv_shutdown, 178 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 14
OS WAIT ARRAY INFO: signal count 13
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 2, rounds 30, OS waits 1
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 15.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9753
Purge done for trx's n:o < 9749 undo n:o < 0 state: running but idle
History list length 53
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421357241870952, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421357241870080, 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
1180 OS file reads, 256 OS file writes, 66 OS fsyncs
0.35 reads/s, 12970 avg bytes/read, 0.46 writes/s, 0.29 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 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 4 buffer(s)
150.82 hash searches/s, 36.46 non-hash searches/s
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LOG
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Log sequence number 50951472
Log buffer assigned up to 50951472
Log buffer completed up to 50951472
Log written up to 50951472
Log flushed up to 50951472
Added dirty pages up to 50951472
Pages flushed up to 50951472
Last checkpoint at 50951472
37 log i/o's done, 0.17 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 442241
Buffer pool size 8192
Free buffers 6955
Database pages 1225
Old database pages 472
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 1083, created 142, written 178
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: 1225, 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=368, Main thread ID=139881759041280 , state=sleeping
Number of rows inserted 3, updated 320, deleted 0, read 105792
0.00 inserts/s, 0.08 updates/s, 0.00 deletes/s, 419.32 reads/s
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END OF INNODB MONITOR OUTPUT
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