Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ متغيرات | Buffer Pool | وضع InnoDB ]

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2025-07-01 00:12:21 0x7fbef4136700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 7 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 36 srv_active, 0 srv_shutdown, 580 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 34
OS WAIT ARRAY INFO: signal count 33
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 3, rounds 90, OS waits 3
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9825
Purge done for trx's n:o < 9825 undo n:o < 0 state: running but idle
History list length 81
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421933267901032, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421933267900160, 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
1234 OS file reads, 1670 OS file writes, 250 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 1.00 writes/s, 0.43 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 2 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
495.50 hash searches/s, 138.98 non-hash searches/s
---
LOG
---
Log sequence number          50970637
Log buffer assigned up to    50970637
Log buffer completed up to   50970637
Log written up to            50970637
Log flushed up to            50970637
Added dirty pages up to      50970637
Pages flushed up to          50970637
Last checkpoint at           50970637
131 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 581132
Buffer pool size   8192
Free buffers       6906
Database pages     1270
Old database pages 475
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 180, not young 573
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1127, created 1030, written 1030
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: 1270, unzip_LRU len: 0
I/O sum[2]: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=140457783797504 , state=sleeping
Number of rows inserted 164315, updated 348, deleted 0, read 590132
38.57 inserts/s, 0.00 updates/s, 0.00 deletes/s, 852.02 reads/s
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END OF INNODB MONITOR OUTPUT
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