Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabel
|
Penampungan Penyangga
|
Status InnoDB
]
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2026-04-01 20:59:25 0x7fcddb6b6700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 26 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 32 srv_active, 0 srv_shutdown, 785 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 61
OS WAIT ARRAY INFO: signal count 65
RW-shared spins 3, rounds 4, OS waits 1
RW-excl spins 2, rounds 60, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.33 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 9960
Purge done for trx's n:o < 9958 undo n:o < 0 state: running but idle
History list length 24
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421998503656912, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421998503656040, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421998503655168, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (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
1475 OS file reads, 1246 OS file writes, 468 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 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 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 9 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 25 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 30 buffer(s)
1520.36 hash searches/s, 1213.91 non-hash searches/s
---
LOG
---
Log sequence number 51082412
Log buffer assigned up to 51082412
Log buffer completed up to 51082412
Log written up to 51082412
Log flushed up to 51082412
Added dirty pages up to 51082412
Pages flushed up to 51082412
Last checkpoint at 51082412
340 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 662091
Buffer pool size 8192
Free buffers 6603
Database pages 1513
Old database pages 538
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 73, not young 52
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1346, created 170, written 782
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: 1513, unzip_LRU len: 0
I/O sum[0]:cur[0], 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=364, Main thread ID=140523019118336 , state=sleeping
Number of rows inserted 157, updated 473, deleted 0, read 2589066
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1854.74 reads/s
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END OF INNODB MONITOR OUTPUT
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