Механизмы хранилища
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Переменные
|
Буферный пул
|
Состояние InnoDB
]
=====================================
2025-11-03 20:11:35 0x7ff830062700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 1 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 31 srv_active, 0 srv_shutdown, 617 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 60
OS WAIT ARRAY INFO: signal count 60
RW-shared spins 2, rounds 4, OS waits 2
RW-excl spins 1, rounds 30, OS waits 1
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 2.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9913
Purge done for trx's n:o < 9912 undo n:o < 0 state: running but idle
History list length 10
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422179061189224, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422179061188352, 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
1333 OS file reads, 1089 OS file writes, 403 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
309.69 hash searches/s, 19.98 non-hash searches/s
---
LOG
---
Log sequence number 51053919
Log buffer assigned up to 51053919
Log buffer completed up to 51053919
Log written up to 51053919
Log flushed up to 51053919
Added dirty pages up to 51053919
Pages flushed up to 51053919
Last checkpoint at 51053919
275 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 650448
Buffer pool size 8192
Free buffers 6800
Database pages 1378
Old database pages 489
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 331, not young 3580
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1214, created 173, written 693
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 1 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1378, unzip_LRU len: 0
I/O sum[24]: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=140703575500544 , state=sleeping
Number of rows inserted 221, updated 427, deleted 0, read 493583
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 789.21 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
