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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2026-01-05 11:51:50 0x7f193d222700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 57 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 18 srv_active, 0 srv_shutdown, 344 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 43
OS WAIT ARRAY INFO: signal count 43
RW-shared spins 2, rounds 2, OS waits 0
RW-excl spins 1, rounds 32, OS waits 3
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 32.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9931
Purge done for trx's n:o < 9926 undo n:o < 0 state: running but idle
History list length 10
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421222419145888, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421222419144144, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421222419143272, not started flushing log
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421222419142400, 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: 1; buffer pool: 0
1401 OS file reads, 819 OS file writes, 266 OS fsyncs
3.21 reads/s, 14537 avg bytes/read, 7.23 writes/s, 1.86 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 7 buffer(s)
954.40 hash searches/s, 486.71 non-hash searches/s
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LOG
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Log sequence number 50990539
Log buffer assigned up to 50990539
Log buffer completed up to 50990539
Log written up to 50990539
Log flushed up to 50990206
Added dirty pages up to 50990539
Pages flushed up to 50988866
Last checkpoint at 50988866
214 log i/o's done, 2.10 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 696216
Buffer pool size 8192
Free buffers 6780
Database pages 1396
Old database pages 496
Modified db pages 12
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 253, not young 1126
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1252, created 147, written 528
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 1 / 1000 not 6 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1396, unzip_LRU len: 0
I/O sum[234]: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
1 read views open inside InnoDB
Process ID=377, Main thread ID=139746934445824 , state=sleeping
Number of rows inserted 61, updated 389, deleted 0, read 736080
0.18 inserts/s, 0.91 updates/s, 0.00 deletes/s, 1539.36 reads/s
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END OF INNODB MONITOR OUTPUT
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