Motori di memorizzazione
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabili
|
Buffer Pool
|
Stato InnoDB
]
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2025-11-20 01:12:06 0x7fd6944b0700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 8 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 103 srv_active, 0 srv_shutdown, 575 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 195
OS WAIT ARRAY INFO: signal count 196
RW-shared spins 9, rounds 17, OS waits 8
RW-excl spins 8, rounds 162, OS waits 5
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.89 RW-shared, 20.25 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 10385
Purge done for trx's n:o < 10385 undo n:o < 0 state: running but idle
History list length 14
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422035225656784, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422035225655912, not started
mysql tables in use 4, locked 0
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422035225655040, 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
1627 OS file reads, 3148 OS file writes, 1249 OS fsyncs
0.50 reads/s, 16384 avg bytes/read, 0.00 writes/s, 0.00 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 8 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 25 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
Hash table size 34679, node heap has 32 buffer(s)
21031.75 hash searches/s, 20232.97 non-hash searches/s
---
LOG
---
Log sequence number 51480350
Log buffer assigned up to 51480350
Log buffer completed up to 51480350
Log written up to 51480350
Log flushed up to 51480350
Added dirty pages up to 51480350
Pages flushed up to 51480350
Last checkpoint at 51480350
1022 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 1006556
Buffer pool size 8192
Free buffers 6423
Database pages 1691
Old database pages 614
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1247, not young 330280
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1444, created 562, written 1689
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 632 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1691, unzip_LRU len: 0
I/O sum[22]: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=376, Main thread ID=140559738943232 , state=sleeping
Number of rows inserted 99552, updated 1037, deleted 63, read 1538168
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 43332.46 reads/s
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END OF INNODB MONITOR OUTPUT
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