Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ متغيرات | Buffer Pool | وضع InnoDB ]

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2025-12-14 04:22:23 0x7fafa4fdd700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 28 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 78 srv_active, 0 srv_shutdown, 316 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 186
OS WAIT ARRAY INFO: signal count 185
RW-shared spins 3, rounds 4, OS waits 1
RW-excl spins 2, rounds 60, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.33 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10289
Purge done for trx's n:o < 10289 undo n:o < 0 state: running but idle
History list length 21
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421868404214376, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421868404213504, 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
1458 OS file reads, 2441 OS file writes, 904 OS fsyncs
0.04 reads/s, 16384 avg bytes/read, 8.57 writes/s, 2.71 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 1 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
1435.41 hash searches/s, 639.41 non-hash searches/s
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LOG
---
Log sequence number          51111103
Log buffer assigned up to    51111103
Log buffer completed up to   51111103
Log written up to            51111103
Log flushed up to            51111093
Added dirty pages up to      51111103
Pages flushed up to          51110023
Last checkpoint at           51110023
666 log i/o's done, 2.25 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 841261
Buffer pool size   8192
Free buffers       6741
Database pages     1432
Old database pages 508
Modified db pages  8
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 783, not young 5442
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1275, created 545, written 1395
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: 1432, unzip_LRU len: 0
I/O sum[255]: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=140392920176384 , state=sleeping
Number of rows inserted 75968, updated 560, deleted 16, read 712327
3.61 inserts/s, 0.64 updates/s, 0.00 deletes/s, 2486.55 reads/s
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END OF INNODB MONITOR OUTPUT
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