Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

=====================================
2026-10-05 00:34:14 0x7f0c674ba640 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 26 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 16205 srv_active, 0 srv_shutdown, 356631 srv_idle
srv_master_thread log flush and writes: 372820
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 118303
OS WAIT ARRAY INFO: signal count 59565
RW-shared spins 27885, rounds 691699, OS waits 22057
RW-excl spins 13197, rounds 108299, OS waits 2022
RW-sx spins 788, rounds 16300, OS waits 345
Spin rounds per wait: 24.81 RW-shared, 8.21 RW-excl, 20.69 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9144788
Purge done for trx's n:o < 9144788 undo n:o < 0 state: running but idle
History list length 19
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421196062065048, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421196062060824, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421196062056600, 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
192096 OS file reads, 436846 OS file writes, 245513 OS fsyncs
0.27 reads/s, 16384 avg bytes/read, 4.88 writes/s, 0.88 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 17, seg size 19, 748 merges
merged operations:
 insert 1177, delete mark 1, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
0.00 hash searches/s, 6.04 non-hash searches/s
---
LOG
---
Log sequence number 11962510869
Log flushed up to   11962510869
Pages flushed up to 11962510869
Last checkpoint at  11962510860
0 pending log flushes, 0 pending chkp writes
119255 log i/o's done, 1.54 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 16777216000
Dictionary memory allocated 13603000
Buffer pool size   963240
Free buffers       777038
Database pages     186202
Old database pages 68883
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 115, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 185237, created 965, written 235594
0.27 reads/s, 0.00 creates/s, 3.12 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: 186202, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
----------------------
INDIVIDUAL BUFFER POOL INFO
----------------------
---BUFFER POOL 0
Buffer pool size   120405
Free buffers       96295
Database pages     24110
Old database pages 8917
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 19, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 24017, created 93, written 14665
0.00 reads/s, 0.00 creates/s, 0.42 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: 24110, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
---BUFFER POOL 1
Buffer pool size   120405
Free buffers       97276
Database pages     23129
Old database pages 8557
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 19, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 22949, created 180, written 55950
0.04 reads/s, 0.00 creates/s, 0.00 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: 23129, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
---BUFFER POOL 2
Buffer pool size   120405
Free buffers       97599
Database pages     22806
Old database pages 8438
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 4, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 22773, created 33, written 11474
0.12 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 947 / 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: 22806, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
---BUFFER POOL 3
Buffer pool size   120405
Free buffers       97113
Database pages     23292
Old database pages 8613
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 19, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 23163, created 129, written 42371
0.00 reads/s, 0.00 creates/s, 0.58 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: 23292, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
---BUFFER POOL 4
Buffer pool size   120405
Free buffers       96761
Database pages     23644
Old database pages 8747
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 20, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 23530, created 114, written 41297
0.00 reads/s, 0.00 creates/s, 1.35 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: 23644, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
---BUFFER POOL 5
Buffer pool size   120405
Free buffers       97672
Database pages     22733
Old database pages 8411
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 13, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 22623, created 110, written 30127
0.04 reads/s, 0.00 creates/s, 0.04 writes/s
Buffer pool hit rate 973 / 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: 22733, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
---BUFFER POOL 6
Buffer pool size   120405
Free buffers       97827
Database pages     22578
Old database pages 8354
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 13, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 22467, created 111, written 27393
0.04 reads/s, 0.00 creates/s, 0.73 writes/s
Buffer pool hit rate 989 / 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: 22578, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
---BUFFER POOL 7
Buffer pool size   120405
Free buffers       96495
Database pages     23910
Old database pages 8846
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 8, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 23715, created 195, written 12317
0.04 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 972 / 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: 23910, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=1377, Main thread ID=139691428918848, state: sleeping
Number of rows inserted 38080, updated 2664, deleted 14473, read 161945251
0.00 inserts/s, 0.58 updates/s, 0.00 deletes/s, 23.77 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 20547
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================