Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ متغيرات | Buffer Pool | وضع InnoDB ]

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2025-12-20 18:16:10 0x7f83840c6700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 24 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 4 srv_active, 0 srv_shutdown, 19 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 19
OS WAIT ARRAY INFO: signal count 19
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 1, rounds 30, OS waits 1
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9772
Purge done for trx's n:o < 9772 undo n:o < 0 state: running but idle
History list length 59
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421677957257832, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421677957256960, 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
1166 OS file reads, 288 OS file writes, 85 OS fsyncs
48.58 reads/s, 20571 avg bytes/read, 12.00 writes/s, 3.54 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 0 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 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 2 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
324.74 hash searches/s, 344.03 non-hash searches/s
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LOG
---
Log sequence number          50955189
Log buffer assigned up to    50955189
Log buffer completed up to   50955189
Log written up to            50955189
Log flushed up to            50955189
Added dirty pages up to      50955189
Pages flushed up to          50953412
Last checkpoint at           50953412
56 log i/o's done, 2.33 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 519997
Buffer pool size   8192
Free buffers       6975
Database pages     1206
Old database pages 464
Modified db pages  10
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1063, created 143, written 191
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 975 / 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: 1206, unzip_LRU len: 0
I/O sum[0]:cur[7], 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=384, Main thread ID=140202473613056 , state=sleeping
Number of rows inserted 7, updated 326, deleted 0, read 18510
0.29 inserts/s, 13.58 updates/s, 0.00 deletes/s, 771.22 reads/s
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END OF INNODB MONITOR OUTPUT
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