Motori di memorizzazione
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabili
|
Buffer Pool
|
Stato InnoDB
]
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2026-01-19 05:43:30 0x7fa430057700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 30 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 35 srv_active, 0 srv_shutdown, 727 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 107
OS WAIT ARRAY INFO: signal count 107
RW-shared spins 2, rounds 2, OS waits 0
RW-excl spins 4, rounds 120, OS waits 4
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
------------
TRANSACTIONS
------------
Trx id counter 10042
Purge done for trx's n:o < 10042 undo n:o < 0 state: running but idle
History list length 61
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421818289711720, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421818289710848, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
--------
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
1455 OS file reads, 1068 OS file writes, 411 OS fsyncs
1.30 reads/s, 13627 avg bytes/read, 3.23 writes/s, 1.47 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
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 0 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 3 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
650.54 hash searches/s, 399.12 non-hash searches/s
---
LOG
---
Log sequence number 51023567
Log buffer assigned up to 51023567
Log buffer completed up to 51023567
Log written up to 51023567
Log flushed up to 51023567
Added dirty pages up to 51023567
Pages flushed up to 51023567
Last checkpoint at 51023567
303 log i/o's done, 1.39 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 832044
Buffer pool size 8192
Free buffers 6732
Database pages 1443
Old database pages 544
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 432, not young 3746
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1290, created 159, written 658
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: 1443, unzip_LRU len: 0
I/O sum[131]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=365, Main thread ID=140342801135360 , state=sleeping
Number of rows inserted 92, updated 431, deleted 0, read 650705
0.00 inserts/s, 0.63 updates/s, 0.00 deletes/s, 1215.66 reads/s
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END OF INNODB MONITOR OUTPUT
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