Motori di memorizzazione
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabili
|
Buffer Pool
|
Stato InnoDB
]
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2025-11-09 12:59:41 0x7f4a4408c700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 42 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 64 srv_active, 0 srv_shutdown, 769 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 276
OS WAIT ARRAY INFO: signal count 274
RW-shared spins 24, rounds 42, OS waits 18
RW-excl spins 49, rounds 904, OS waits 24
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.75 RW-shared, 18.45 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 10729
Purge done for trx's n:o < 10724 undo n:o < 0 state: running but idle
History list length 26
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421432453731488, not started flushing log
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421432453729744, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421432453728872, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421432453728000, 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: 1; buffer pool: 0
1827 OS file reads, 4342 OS file writes, 1469 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 2.81 writes/s, 1.24 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 2 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)
529.99 hash searches/s, 144.33 non-hash searches/s
---
LOG
---
Log sequence number 52267082
Log buffer assigned up to 52267082
Log buffer completed up to 52267082
Log written up to 52267082
Log flushed up to 52266833
Added dirty pages up to 52266833
Pages flushed up to 52266833
Last checkpoint at 52266833
1720 log i/o's done, 0.83 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 1028175
Buffer pool size 8192
Free buffers 6211
Database pages 1960
Old database pages 703
Modified db pages 2
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 628, not young 3026
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1660, created 315, written 2343
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 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: 1960, unzip_LRU len: 0
I/O sum[70]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
1 read views open inside InnoDB
Process ID=372, Main thread ID=139956967126784 , state=sleeping
Number of rows inserted 1378, updated 2256, deleted 447, read 586765
0.62 inserts/s, 0.43 updates/s, 0.00 deletes/s, 673.44 reads/s
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END OF INNODB MONITOR OUTPUT
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