Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

=====================================
2026-08-27 10:08:07 0x2794 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 31 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 7746 srv_active, 0 srv_shutdown, 12519 srv_idle
srv_master_thread log flush and writes: 20265
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 150668
OS WAIT ARRAY INFO: signal count 40794
RW-shared spins 5041, rounds 130039, OS waits 4094
RW-excl spins 7214, rounds 50602, OS waits 760
RW-sx spins 26, rounds 901, OS waits 27
Spin rounds per wait: 25.80 RW-shared, 7.01 RW-excl, 34.65 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 24379
Purge done for trx's n:o < 24379 undo n:o < 0 state: running
History list length 5
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283316499347280, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499343112, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499338944, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499334776, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499297264, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499330608, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499326440, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499322272, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499318104, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499313936, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499309768, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499305600, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499301432, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499293096, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499288928, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499284760, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499280592, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499276424, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499255584, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499247248, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499272256, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499268088, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499263920, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499259752, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283316499251416, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (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
58647 OS file reads, 86721 OS file writes, 51315 OS fsyncs
7.32 reads/s, 16384 avg bytes/read, 8.42 writes/s, 5.19 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 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 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)
41.77 hash searches/s, 11.77 non-hash searches/s
---
LOG
---
Log sequence number 23901740
Log flushed up to   23901740
Pages flushed up to 23901740
Last checkpoint at  23898991
0 pending log flushes, 0 pending chkp writes
25553 log i/o's done, 2.35 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 165264
Buffer pool size   1003
Free buffers       740
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 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 58611, created 1780, written 51958
7.32 reads/s, 0.00 creates/s, 5.06 writes/s
Buffer pool hit rate 985 / 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[487]:cur[3], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=1544, Main thread ID=11712, state: sleeping
Number of rows inserted 16916, updated 10617, deleted 1, read 11317197
0.00 inserts/s, 1.00 updates/s, 0.00 deletes/s, 714.82 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 17909
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================