Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

=====================================
2026-04-02 16:40:00 0x7693341f86c0 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 35 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 490 srv_active, 0 srv_shutdown, 461351 srv_idle
srv_master_thread log flush and writes: 461830
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 11082
OS WAIT ARRAY INFO: signal count 5466
RW-shared spins 0, rounds 709, OS waits 346
RW-excl spins 0, rounds 764, OS waits 9
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 709.00 RW-shared, 764.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 110344
Purge done for trx's n:o < 110344 undo n:o < 0 state: running
History list length 1
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 411849367486968, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 411849367482712, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 411849367499736, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 411849367478456, not started
0 lock struct(s), heap size 1136, 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
7015 OS file reads, 10276 OS file writes, 5030 OS fsyncs
10.94 reads/s, 16384 avg bytes/read, 22.31 writes/s, 12.86 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 4441, node heap has 1 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 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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
28.34 hash searches/s, 97.91 non-hash searches/s
---
LOG
---
Log sequence number 57637976
Log flushed up to   57637956
Pages flushed up to 57576141
Last checkpoint at  57548123
0 pending log flushes, 0 pending chkp writes
3373 log i/o's done, 7.74 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 344688
Buffer pool size   1001
Free buffers       737
Database pages     257
Old database pages 0
Modified db pages  96
Percent of dirty pages(LRU & free pages): 9.648
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 3, not young 6
0.00 youngs/s, 0.00 non-youngs/s
Pages read 6762, created 244, written 6182
10.94 reads/s, 0.23 creates/s, 12.09 writes/s
Buffer pool hit rate 967 / 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: 257, unzip_LRU len: 0
I/O sum[1015]:cur[5], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=2706, Main thread ID=130373992310464, state: sleeping
Number of rows inserted 83, updated 2095, deleted 0, read 136661
0.00 inserts/s, 6.31 updates/s, 0.00 deletes/s, 35.71 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 4431
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.03 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================