Storage engines

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variabel | Penampungan Penyangga | Status InnoDB ]

=====================================
2025-12-20 02:08:06 0x7017ec0d36c0 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 6 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 190 srv_active, 0 srv_shutdown, 285383 srv_idle
srv_master_thread log flush and writes: 285566
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 2547
OS WAIT ARRAY INFO: signal count 858
RW-shared spins 227, rounds 6714, OS waits 221
RW-excl spins 25, rounds 842, OS waits 27
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 29.58 RW-shared, 33.68 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 214431
Purge done for trx's n:o < 214431 undo n:o < 0 state: running
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 404723033911680, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 404723033907464, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 404723033903248, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (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
4369 OS file reads, 2845 OS file writes, 1493 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 12, seg size 14, 0 merges
merged operations:
 insert 0, delete mark 0, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
1.33 hash searches/s, 1.00 non-hash searches/s
---
LOG
---
Log sequence number 13264283407
Log flushed up to   13264283407
Pages flushed up to 13264283407
Last checkpoint at  13264283398
0 pending log flushes, 0 pending chkp writes
950 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 90280
Buffer pool size   1003
Free buffers       744
Database pages     256
Old database pages 0
Modified db pages  0
Percent of dirty pages(LRU & free pages): 0.000
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 22, not young 225777
0.00 youngs/s, 0.00 non-youngs/s
Pages read 4329, created 175, written 1702
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: 256, 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=1103, Main thread ID=123247657940672, state: sleeping
Number of rows inserted 0, updated 395, deleted 0, read 195560
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1.50 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 692
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================