Механізми зберігання

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Змінні | Буферний пул | Статус InnoDB ]

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2025-10-14 14:58:05 0x7f459c0ae700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 4 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 42 srv_active, 0 srv_shutdown, 694 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 497
OS WAIT ARRAY INFO: signal count 431
RW-shared spins 56, rounds 99, OS waits 43
RW-excl spins 267, rounds 1563, OS waits 20
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.77 RW-shared, 5.85 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10205
Purge done for trx's n:o < 10200 undo n:o < 0 state: running but idle
History list length 5
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421412091333224, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421412091332352, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
--------
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
1374 OS file reads, 2655 OS file writes, 813 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
438.89 hash searches/s, 172.21 non-hash searches/s
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LOG
---
Log sequence number          52080365
Log buffer assigned up to    52080365
Log buffer completed up to   52080365
Log written up to            52080365
Log flushed up to            52080365
Added dirty pages up to      52080365
Pages flushed up to          52080365
Last checkpoint at           52080365
1249 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
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Total large memory allocated 137363456
Dictionary memory allocated 462754
Buffer pool size   8192
Free buffers       6773
Database pages     1392
Old database pages 525
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 678, not young 2092
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1237, created 264, written 1214
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: 1392, unzip_LRU len: 0
I/O sum[58]: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=139936607966976 , state=sleeping
Number of rows inserted 33247, updated 1748, deleted 1559, read 389949
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1037.49 reads/s
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END OF INNODB MONITOR OUTPUT
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