Motori di memorizzazione
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabili
|
Buffer Pool
|
Stato InnoDB
]
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2024-09-19 23:36:01 0x7f5be03f1700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 9 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 31 srv_active, 0 srv_shutdown, 281 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 119
OS WAIT ARRAY INFO: signal count 106
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 7, rounds 210, OS waits 7
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 10066
Purge done for trx's n:o < 10061 undo n:o < 0 state: running but idle
History list length 102
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421508151949928, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421508151949056, 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
1457 OS file reads, 1328 OS file writes, 517 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.22 writes/s, 0.22 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 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 2 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
290.86 hash searches/s, 87.55 non-hash searches/s
---
LOG
---
Log sequence number 51065739
Log buffer assigned up to 51065739
Log buffer completed up to 51065739
Log written up to 51065739
Log flushed up to 51065739
Added dirty pages up to 51065739
Pages flushed up to 51065739
Last checkpoint at 51065739
422 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 649071
Buffer pool size 8192
Free buffers 6679
Database pages 1495
Old database pages 571
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 93, not young 157
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1332, created 169, written 781
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: 1495, unzip_LRU len: 0
I/O sum[68]: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=369, Main thread ID=140032665925376 , state=sleeping
Number of rows inserted 216, updated 474, deleted 0, read 717957
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 801.47 reads/s
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END OF INNODB MONITOR OUTPUT
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