Motori di memorizzazione
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabili
|
Buffer Pool
|
Stato InnoDB
]
=====================================
2025-11-20 04:06:30 0x7f5418166700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 38 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 16 srv_active, 0 srv_shutdown, 326 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 81
OS WAIT ARRAY INFO: signal count 81
RW-shared spins 4, rounds 7, OS waits 3
RW-excl spins 6, rounds 180, OS waits 6
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.75 RW-shared, 30.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9979
Purge done for trx's n:o < 9979 undo n:o < 0 state: running but idle
History list length 20
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421474274388584, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421474274387712, 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
1312 OS file reads, 1050 OS file writes, 426 OS fsyncs
0.42 reads/s, 16384 avg bytes/read, 3.82 writes/s, 2.55 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 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 0 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
760.27 hash searches/s, 229.68 non-hash searches/s
---
LOG
---
Log sequence number 51144417
Log buffer assigned up to 51144417
Log buffer completed up to 51144417
Log written up to 51144417
Log flushed up to 51144417
Added dirty pages up to 51144417
Pages flushed up to 51117383
Last checkpoint at 51117383
421 log i/o's done, 3.39 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 633603
Buffer pool size 8192
Free buffers 6795
Database pages 1382
Old database pages 490
Modified db pages 243
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 480, not young 3648
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1205, created 180, written 530
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 2 / 1000 not 19 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1382, unzip_LRU len: 0
I/O sum[28]:cur[2], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=380, Main thread ID=139998789818112 , state=sleeping
Number of rows inserted 257, updated 616, deleted 0, read 382563
1.42 inserts/s, 0.53 updates/s, 0.00 deletes/s, 1655.61 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
