Storage engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[
Variabel
|
Penampungan Penyangga
|
Status InnoDB
]
=====================================
2026-04-19 02:18:02 0x154c INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 57 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 333305 srv_active, 0 srv_shutdown, 105874 srv_idle
srv_master_thread log flush and writes: 439176
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 14337959
OS WAIT ARRAY INFO: signal count 984514
RW-shared spins 117201, rounds 3499525, OS waits 108418
RW-excl spins 5648, rounds 172793, OS waits 5310
RW-sx spins 239, rounds 7221, OS waits 188
Spin rounds per wait: 29.86 RW-shared, 30.59 RW-excl, 30.21 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 8658686
Purge done for trx's n:o < 8658686 undo n:o < 0 state: running
History list length 12
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283852151353656, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283852151349480, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283852151362008, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283852151345304, 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
465094 OS file reads, 4245816 OS file writes, 2351748 OS fsyncs
1.77 reads/s, 16384 avg bytes/read, 9.95 writes/s, 5.74 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 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 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
19.70 hash searches/s, 44.09 non-hash searches/s
---
LOG
---
Log sequence number 5578648722
Log flushed up to 5578648702
Pages flushed up to 5578628128
Last checkpoint at 5578624596
0 pending log flushes, 0 pending chkp writes
1224098 log i/o's done, 3.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 80128
Buffer pool size 1003
Free buffers 743
Database pages 258
Old database pages 0
Modified db pages 44
Percent of dirty pages(LRU & free pages): 4.391
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 465058, created 32024, written 2580605
1.77 reads/s, 0.12 creates/s, 5.91 writes/s
Buffer pool hit rate 987 / 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: 258, unzip_LRU len: 0
I/O sum[380]:cur[1], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=10912, Main thread ID=2480, state: sleeping
Number of rows inserted 0, updated 640861, deleted 0, read 6831843
0.00 inserts/s, 1.70 updates/s, 0.00 deletes/s, 17.72 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1525
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
