Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabel
|
Penampungan Penyangga
|
Status InnoDB
]
=====================================
2026-04-02 11:21:11 0x7fc7e7fff700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 19 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 46 srv_active, 0 srv_shutdown, 277 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 118
OS WAIT ARRAY INFO: signal count 119
RW-shared spins 2, rounds 3, OS waits 1
RW-excl spins 4, rounds 79, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.50 RW-shared, 19.75 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 10088
Purge done for trx's n:o < 10088 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421973010860648, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421973010859776, 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
1575 OS file reads, 1337 OS file writes, 531 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 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 7 buffer(s)
2531.34 hash searches/s, 1506.50 non-hash searches/s
---
LOG
---
Log sequence number 51065729
Log buffer assigned up to 51065729
Log buffer completed up to 51065729
Log written up to 51065729
Log flushed up to 51065729
Added dirty pages up to 51065729
Pages flushed up to 51065729
Last checkpoint at 51065729
375 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 832045
Buffer pool size 8192
Free buffers 6615
Database pages 1560
Old database pages 555
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 404, not young 1160
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1406, created 178, written 814
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: 1560, unzip_LRU len: 0
I/O sum[11]: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=376, Main thread ID=140497526138624 , state=sleeping
Number of rows inserted 524, updated 439, deleted 23, read 1395510
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 4204.78 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
