Storage engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[
Variabel
|
Penampungan Penyangga
|
Status InnoDB
]
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2026-04-02 18:06:15 0x7693362d36c0 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 40 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 1077 srv_active, 0 srv_shutdown, 465934 srv_idle
srv_master_thread log flush and writes: 467000
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 21402
OS WAIT ARRAY INFO: signal count 10218
RW-shared spins 0, rounds 1052, OS waits 515
RW-excl spins 0, rounds 1125, OS waits 21
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1052.00 RW-shared, 1125.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 121848
Purge done for trx's n:o < 121848 undo n:o < 0 state: running but idle
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 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
14476 OS file reads, 24760 OS file writes, 12292 OS fsyncs
0.15 reads/s, 16384 avg bytes/read, 0.97 writes/s, 0.87 fsyncs/s
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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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 2 buffer(s)
1.55 hash searches/s, 5.82 non-hash searches/s
---
LOG
---
Log sequence number 62060487
Log flushed up to 62060467
Pages flushed up to 62038514
Last checkpoint at 62034782
0 pending log flushes, 0 pending chkp writes
7831 log i/o's done, 0.60 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 344688
Buffer pool size 1001
Free buffers 732
Database pages 260
Old database pages 0
Modified db pages 50
Percent of dirty pages(LRU & free pages): 5.035
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 17, not young 130
0.00 youngs/s, 0.00 non-youngs/s
Pages read 14223, created 432, written 14915
0.15 reads/s, 0.00 creates/s, 0.25 writes/s
Buffer pool hit rate 993 / 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: 260, unzip_LRU len: 0
I/O sum[13]:cur[3], unzip sum[0]:cur[0]
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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 5489, deleted 0, read 448780
0.00 inserts/s, 0.50 updates/s, 0.00 deletes/s, 1.57 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 14080
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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