Motori di memorizzazione
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabili
|
Buffer Pool
|
Stato InnoDB
]
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2025-11-20 02:34:44 0x7f9600083700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 53 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 55 srv_active, 0 srv_shutdown, 180 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 143
OS WAIT ARRAY INFO: signal count 140
RW-shared spins 17, rounds 32, OS waits 15
RW-excl spins 10, rounds 220, OS waits 6
RW-sx spins 1, rounds 5, OS waits 0
Spin rounds per wait: 1.88 RW-shared, 22.00 RW-excl, 5.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 10262
Purge done for trx's n:o < 10228 undo n:o < 0 state: running but idle
History list length 14
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421757739782456, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421757739780712, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421757739779840, 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
1442 OS file reads, 2516 OS file writes, 1016 OS fsyncs
0.40 reads/s, 13458 avg bytes/read, 3.19 writes/s, 1.70 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 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 1 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)
533.69 hash searches/s, 201.79 non-hash searches/s
---
LOG
---
Log sequence number 51533048
Log buffer assigned up to 51533048
Log buffer completed up to 51533048
Log written up to 51533048
Log flushed up to 51533048
Added dirty pages up to 51533048
Pages flushed up to 51520637
Last checkpoint at 51520637
959 log i/o's done, 1.42 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 1107470
Buffer pool size 8192
Free buffers 6601
Database pages 1572
Old database pages 561
Modified db pages 128
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 722, not young 987
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1279, created 490, written 1244
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: 1572, unzip_LRU len: 0
I/O sum[75]:cur[5], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
1 read views open inside InnoDB
Process ID=366, Main thread ID=140282256348928 , state=sleeping
Number of rows inserted 41898, updated 823, deleted 0, read 357056
2.23 inserts/s, 0.68 updates/s, 0.00 deletes/s, 1419.75 reads/s
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END OF INNODB MONITOR OUTPUT
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