Storage engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[
Variabel
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Penampungan Penyangga
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Status InnoDB
]
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2026-04-16 00:18:11 0x7be4eca886c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 48 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 2042 srv_active, 0 srv_shutdown, 1962792 srv_idle
srv_master_thread log flush and writes: 1964792
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 49033
OS WAIT ARRAY INFO: signal count 54877
RW-shared spins 48125, rounds 1004163, OS waits 26635
RW-excl spins 62539, rounds 436320, OS waits 4013
RW-sx spins 1383, rounds 36030, OS waits 685
Spin rounds per wait: 20.87 RW-shared, 6.98 RW-excl, 26.05 RW-sx
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TRANSACTIONS
------------
Trx id counter 299149
Purge done for trx's n:o < 299149 undo n:o < 0 state: running
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 417698079781248, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 417698079777032, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 417698079772816, not started
0 lock struct(s), heap size 1128, 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
1294512 OS file reads, 79123 OS file writes, 17404 OS fsyncs
0.02 reads/s, 16384 avg bytes/read, 0.25 writes/s, 0.25 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 12, seg size 14, 10260 merges
merged operations:
insert 48682, delete mark 359, delete 71
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)
1.58 hash searches/s, 3.56 non-hash searches/s
---
LOG
---
Log sequence number 13658090062
Log flushed up to 13658090042
Pages flushed up to 13658075190
Last checkpoint at 13658073972
0 pending log flushes, 0 pending chkp writes
8438 log i/o's done, 0.17 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 92720
Buffer pool size 1003
Free buffers 739
Database pages 257
Old database pages 0
Modified db pages 34
Percent of dirty pages(LRU & free pages): 3.410
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 81867, not young 58411691
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1294472, created 1396, written 67216
0.02 reads/s, 0.02 creates/s, 0.04 writes/s
Buffer pool hit rate 998 / 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[0]:cur[3], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
1 read views open inside InnoDB
Process ID=313019, Main thread ID=136221909042880, state: sleeping
Number of rows inserted 30755, updated 130576, deleted 2, read 149843598
0.00 inserts/s, 0.25 updates/s, 0.00 deletes/s, 1.58 reads/s
Number of system rows inserted 6, updated 0, deleted 0, read 1149
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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