Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variabel | Penampungan Penyangga | Status InnoDB ]

=====================================
2025-04-16 16:32:45 0x7ff23d5fa700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 56 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 16 srv_active, 0 srv_shutdown, 100 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 487
OS WAIT ARRAY INFO: signal count 443
RW-shared spins 53, rounds 91, OS waits 38
RW-excl spins 216, rounds 1444, OS waits 18
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.72 RW-shared, 6.69 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 10169
Purge done for trx's n:o < 10169 undo n:o < 0 state: running but idle
History list length 52
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422154428594792, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422154428593920, 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
1458 OS file reads, 2252 OS file writes, 597 OS fsyncs
2.89 reads/s, 15341 avg bytes/read, 34.77 writes/s, 8.89 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 2 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
506.69 hash searches/s, 406.72 non-hash searches/s
---
LOG
---
Log sequence number          52035691
Log buffer assigned up to    52035691
Log buffer completed up to   52035691
Log written up to            52035691
Log flushed up to            52035691
Added dirty pages up to      52035691
Pages flushed up to          52035691
Last checkpoint at           52035691
1227 log i/o's done, 20.91 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 462754
Buffer pool size   8192
Free buffers       6693
Database pages     1478
Old database pages 565
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 3, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1323, created 155, written 949
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 999 / 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: 1478, 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=373, Main thread ID=140678945236736 , state=sleeping
Number of rows inserted 10, updated 1743, deleted 1530, read 334482
0.11 inserts/s, 25.30 updates/s, 27.32 deletes/s, 617.52 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================