存储引擎
InnoDB
Supports transactions, row-level locking, and foreign keys
[
变量
|
缓冲池
|
InnoDB 状态
]
=====================================
2025-09-18 19:21:24 0x7f92f405d700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 32 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 19 srv_active, 0 srv_shutdown, 316 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 40
OS WAIT ARRAY INFO: signal count 40
RW-shared spins 1, rounds 1, 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: 1.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9871
Purge done for trx's n:o < 9871 undo n:o < 0 state: running but idle
History list length 94
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421744138533480, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421744138532608, 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
1299 OS file reads, 536 OS file writes, 222 OS fsyncs
0.06 reads/s, 16384 avg bytes/read, 1.62 writes/s, 0.84 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 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
573.98 hash searches/s, 152.21 non-hash searches/s
---
LOG
---
Log sequence number 50972984
Log buffer assigned up to 50972984
Log buffer completed up to 50972984
Log written up to 50972984
Log flushed up to 50972984
Added dirty pages up to 50972984
Pages flushed up to 50972984
Last checkpoint at 50972984
153 log i/o's done, 0.72 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 620216
Buffer pool size 8192
Free buffers 6866
Database pages 1308
Old database pages 462
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 232, not young 625
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1164, created 150, written 312
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: 1308, unzip_LRU len: 0
I/O sum[33]: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=367, Main thread ID=140268654233344 , state=sleeping
Number of rows inserted 151, updated 361, deleted 0, read 171463
0.16 inserts/s, 0.19 updates/s, 0.00 deletes/s, 951.63 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
