Motori di memorizzazione
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[
Variabili
|
Buffer Pool
|
Stato InnoDB
]
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2025-12-19 08:45:34 0x7e276271e6c0 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 10 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 24374 srv_active, 0 srv_shutdown, 5498469 srv_idle
srv_master_thread log flush and writes: 5522789
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 282976
OS WAIT ARRAY INFO: signal count 117675
RW-shared spins 37297, rounds 1116838, OS waits 37106
RW-excl spins 2988, rounds 12784, OS waits 188
RW-sx spins 13, rounds 261, OS waits 8
Spin rounds per wait: 29.94 RW-shared, 4.28 RW-excl, 20.08 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 126820
Purge done for trx's n:o < 126820 undo n:o < 0 state: running but idle
History list length 6
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 420182342251240, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 420182342247024, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 420182342242808, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 420182342238592, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 420182342234376, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 420182342230160, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (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
84070 OS file reads, 330307 OS file writes, 216783 OS fsyncs
1.50 reads/s, 16384 avg bytes/read, 5.60 writes/s, 2.50 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 4441, node heap has 8 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
8.70 hash searches/s, 14.20 non-hash searches/s
---
LOG
---
Log sequence number 53649118
Log flushed up to 53649098
Pages flushed up to 53647702
Last checkpoint at 53647693
0 pending log flushes, 0 pending chkp writes
131708 log i/o's done, 1.70 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 178120
Buffer pool size 1003
Free buffers 735
Database pages 257
Old database pages 0
Modified db pages 5
Percent of dirty pages(LRU & free pages): 0.504
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 164, not young 3367
0.00 youngs/s, 0.00 non-youngs/s
Pages read 84036, created 2552, written 169310
1.50 reads/s, 0.10 creates/s, 3.60 writes/s
Buffer pool hit rate 974 / 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: 257, unzip_LRU len: 0
I/O sum[51]: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=284, Main thread ID=138707084494528, state: sleeping
Number of rows inserted 85817, updated 31666, deleted 327, read 7211721142
0.00 inserts/s, 1.10 updates/s, 0.00 deletes/s, 8.10 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 63533
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
