Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ متغيرات | Buffer Pool | وضع InnoDB ]

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2025-07-01 07:40:21 0x7fcff2d83700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 25 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 28 srv_active, 0 srv_shutdown, 545 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 435
OS WAIT ARRAY INFO: signal count 421
RW-shared spins 78, rounds 142, OS waits 64
RW-excl spins 238, rounds 1639, OS waits 22
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.82 RW-shared, 6.89 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10156
Purge done for trx's n:o < 10155 undo n:o < 0 state: running but idle
History list length 32
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422006671329896, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422006671329024, 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
1311 OS file reads, 2279 OS file writes, 685 OS fsyncs
0.40 reads/s, 16384 avg bytes/read, 0.60 writes/s, 0.40 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 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
191.99 hash searches/s, 45.08 non-hash searches/s
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LOG
---
Log sequence number          52052758
Log buffer assigned up to    52052758
Log buffer completed up to   52052758
Log written up to            52052758
Log flushed up to            52052758
Added dirty pages up to      52052758
Pages flushed up to          52052758
Last checkpoint at           52052758
1184 log i/o's done, 0.23 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 460654
Buffer pool size   8192
Free buffers       6834
Database pages     1333
Old database pages 475
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 667, not young 4329
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1176, created 163, written 988
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 3 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1333, unzip_LRU len: 0
I/O sum[17]: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=372, Main thread ID=140531184109312 , state=sleeping
Number of rows inserted 129, updated 1746, deleted 1529, read 390485
0.08 inserts/s, 0.04 updates/s, 0.00 deletes/s, 272.83 reads/s
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END OF INNODB MONITOR OUTPUT
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