Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ متغيرات | Buffer Pool | وضع InnoDB ]

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2026-03-21 03:34:19 0x7f58f007e700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 29 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 10 srv_active, 0 srv_shutdown, 201 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 7
OS WAIT ARRAY INFO: signal count 7
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 0, rounds 1, OS waits 1
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 1.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9775
Purge done for trx's n:o < 9775 undo n:o < 0 state: running but idle
History list length 62
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421495077038696, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421495077037824, 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
1200 OS file reads, 312 OS file writes, 97 OS fsyncs
0.21 reads/s, 13824 avg bytes/read, 0.28 writes/s, 0.24 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 0 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)
2099.89 hash searches/s, 1560.08 non-hash searches/s
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LOG
---
Log sequence number          50955213
Log buffer assigned up to    50955213
Log buffer completed up to   50955213
Log written up to            50955213
Log flushed up to            50955213
Added dirty pages up to      50955213
Pages flushed up to          50955213
Last checkpoint at           50955213
59 log i/o's done, 0.07 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 483227
Buffer pool size   8192
Free buffers       6934
Database pages     1243
Old database pages 439
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 138, not young 1550
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1101, created 148, written 205
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 1 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1243, unzip_LRU len: 0
I/O sum[42]: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=140019593565952 , state=sleeping
Number of rows inserted 141, updated 329, deleted 0, read 738987
0.00 inserts/s, 0.03 updates/s, 0.00 deletes/s, 2824.35 reads/s
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END OF INNODB MONITOR OUTPUT
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