Motori di memorizzazione
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabili
|
Buffer Pool
|
Stato InnoDB
]
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2025-09-17 02:08:49 0x7f50481ad700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 55 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 25 srv_active, 0 srv_shutdown, 456 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 54
OS WAIT ARRAY INFO: signal count 52
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9903
Purge done for trx's n:o < 9893 undo n:o < 0 state: running but idle
History list length 20
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421457947187816, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421457947186944, 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
1430 OS file reads, 735 OS file writes, 289 OS fsyncs
3.51 reads/s, 15269 avg bytes/read, 1.22 writes/s, 0.82 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 0 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 6 buffer(s)
274.94 hash searches/s, 125.72 non-hash searches/s
---
LOG
---
Log sequence number 50982929
Log buffer assigned up to 50982929
Log buffer completed up to 50982929
Log written up to 50982929
Log flushed up to 50982929
Added dirty pages up to 50982929
Pages flushed up to 50975379
Last checkpoint at 50975379
188 log i/o's done, 0.80 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 640723
Buffer pool size 8192
Free buffers 6750
Database pages 1429
Old database pages 547
Modified db pages 34
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 322, not young 732
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1287, created 148, written 460
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 998 / 1000, young-making rate 0 / 1000 not 1 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1429, unzip_LRU len: 0
I/O sum[84]:cur[98], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=364, Main thread ID=139982460106496 , state=sleeping
Number of rows inserted 106, updated 373, deleted 0, read 116742
0.00 inserts/s, 0.36 updates/s, 0.00 deletes/s, 685.79 reads/s
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END OF INNODB MONITOR OUTPUT
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