Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
متغيرات
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Buffer Pool
|
وضع InnoDB
]
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2025-12-20 20:28:16 0x7f0be804a700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 16 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 14 srv_active, 0 srv_shutdown, 733 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 35
OS WAIT ARRAY INFO: signal count 33
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 9821
Purge done for trx's n:o < 9820 undo n:o < 0 state: running but idle
History list length 80
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421164134964688, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421164134963816, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421164134962944, 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
1297 OS file reads, 431 OS file writes, 165 OS fsyncs
1.12 reads/s, 14677 avg bytes/read, 1.56 writes/s, 0.81 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 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
181.93 hash searches/s, 35.06 non-hash searches/s
---
LOG
---
Log sequence number 50963263
Log buffer assigned up to 50963263
Log buffer completed up to 50963263
Log written up to 50963263
Log flushed up to 50963263
Added dirty pages up to 50963263
Pages flushed up to 50963263
Last checkpoint at 50963263
104 log i/o's done, 0.59 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 619703
Buffer pool size 8192
Free buffers 6845
Database pages 1327
Old database pages 472
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 152, not young 125
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1184, created 146, written 266
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 999 / 1000, young-making rate 1 / 1000 not 8 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1327, unzip_LRU len: 0
I/O sum[14]:cur[13], 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=374, Main thread ID=139688649107200 , state=sleeping
Number of rows inserted 54, updated 347, deleted 0, read 287967
0.00 inserts/s, 0.31 updates/s, 0.00 deletes/s, 316.61 reads/s
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END OF INNODB MONITOR OUTPUT
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