儲存引擎
InnoDB
Supports transactions, row-level locking, and foreign keys
[
變數
|
緩衝池
|
InnoDB 狀態
]
=====================================
2025-07-01 15:56:40 0x7f337899a700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 42 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 62 srv_active, 0 srv_shutdown, 590 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 158
OS WAIT ARRAY INFO: signal count 155
RW-shared spins 14, rounds 26, OS waits 12
RW-excl spins 18, rounds 386, OS waits 10
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.86 RW-shared, 21.44 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 10146
Purge done for trx's n:o < 10139 undo n:o < 0 state: running but idle
History list length 46
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421334878255720, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421334878254848, 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
1495 OS file reads, 2204 OS file writes, 790 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 0 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
303.66 hash searches/s, 73.90 non-hash searches/s
---
LOG
---
Log sequence number 51338157
Log buffer assigned up to 51338157
Log buffer completed up to 51338157
Log written up to 51338157
Log flushed up to 51338157
Added dirty pages up to 51338157
Pages flushed up to 51338157
Last checkpoint at 51338157
670 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 781928
Buffer pool size 8192
Free buffers 6632
Database pages 1544
Old database pages 549
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 509, not young 1595
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1342, created 220, written 1334
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: 1544, unzip_LRU len: 0
I/O sum[0]: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=365, Main thread ID=139859465500416 , state=sleeping
Number of rows inserted 636, updated 856, deleted 121, read 498281
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 535.51 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
