Механизмы хранилища
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Переменные
|
Буферный пул
|
Состояние InnoDB
]
=====================================
2026-01-02 04:59:17 0x7f2e7c065700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 16 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 30 srv_active, 0 srv_shutdown, 778 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 68
OS WAIT ARRAY INFO: signal count 68
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 9880
Purge done for trx's n:o < 9879 undo n:o < 0 state: running but idle
History list length 10
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421312766372456, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421312766371584, 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
1353 OS file reads, 754 OS file writes, 286 OS fsyncs
0.25 reads/s, 12544 avg bytes/read, 0.56 writes/s, 0.50 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 0 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
690.14 hash searches/s, 464.78 non-hash searches/s
---
LOG
---
Log sequence number 50979535
Log buffer assigned up to 50979535
Log buffer completed up to 50979535
Log written up to 50979535
Log flushed up to 50979535
Added dirty pages up to 50979535
Pages flushed up to 50979535
Last checkpoint at 50979535
172 log i/o's done, 0.18 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 627676
Buffer pool size 8192
Free buffers 6813
Database pages 1363
Old database pages 483
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 315, not young 1073
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1220, created 149, written 493
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: 1363, unzip_LRU len: 0
I/O sum[23]: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=380, Main thread ID=139837278455552 , state=sleeping
Number of rows inserted 103, updated 369, deleted 0, read 518823
0.00 inserts/s, 0.06 updates/s, 0.00 deletes/s, 943.94 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
