Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

=====================================
2026-10-06 13:53:44 0x7f62d3c9d640 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 16 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 13310 srv_active, 0 srv_shutdown, 97839 srv_idle
srv_master_thread log flush and writes: 111142
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 1051111
OS WAIT ARRAY INFO: signal count 710958
RW-shared spins 8287, rounds 246526, OS waits 8186
RW-excl spins 1140, rounds 25374, OS waits 772
RW-sx spins 101, rounds 2952, OS waits 86
Spin rounds per wait: 29.75 RW-shared, 22.26 RW-excl, 29.23 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 11007545
Purge done for trx's n:o < 11007545 undo n:o < 0 state: running but idle
History list length 13
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421536035565848, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035608088, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035603864, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035599640, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035595416, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035586968, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035582744, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035578520, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035574296, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035570072, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035591192, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421536035561624, 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
210655 OS file reads, 258725 OS file writes, 103213 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 11.00 writes/s, 1.94 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 17, seg size 19, 479 merges
merged operations:
 insert 807, delete mark 0, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
0.00 hash searches/s, 13.94 non-hash searches/s
---
LOG
---
Log sequence number 12016017537
Log flushed up to   12016013933
Pages flushed up to 12016013933
Last checkpoint at  12015983033
0 pending log flushes, 0 pending chkp writes
96516 log i/o's done, 3.88 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 16777216000
Dictionary memory allocated 13327280
Buffer pool size   963240
Free buffers       759095
Database pages     204145
Old database pages 75515
Modified db pages  7
Percent of dirty pages(LRU & free pages): 0.001
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 56, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 203786, created 359, written 129499
0.00 reads/s, 0.00 creates/s, 6.37 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: 204145, unzip_LRU len: 0
I/O sum[0]:cur[40], unzip sum[0]:cur[0]
----------------------
INDIVIDUAL BUFFER POOL INFO
----------------------
---BUFFER POOL 0
Buffer pool size   120405
Free buffers       93992
Database pages     26413
Old database pages 9770
Modified db pages  1
Percent of dirty pages(LRU & free pages): 0.001
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 7, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 26407, created 6, written 12322
0.00 reads/s, 0.00 creates/s, 0.94 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: 26413, unzip_LRU len: 0
I/O sum[0]:cur[5], unzip sum[0]:cur[0]
---BUFFER POOL 1
Buffer pool size   120405
Free buffers       95200
Database pages     25205
Old database pages 9324
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 9, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 25194, created 11, written 15457
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: 25205, unzip_LRU len: 0
I/O sum[0]:cur[5], unzip sum[0]:cur[0]
---BUFFER POOL 2
Buffer pool size   120405
Free buffers       95320
Database pages     25085
Old database pages 9279
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 25083, created 2, written 5207
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: 25085, unzip_LRU len: 0
I/O sum[0]:cur[5], unzip sum[0]:cur[0]
---BUFFER POOL 3
Buffer pool size   120405
Free buffers       94830
Database pages     25575
Old database pages 9460
Modified db pages  3
Percent of dirty pages(LRU & free pages): 0.002
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 9, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 25502, created 73, written 29702
0.00 reads/s, 0.00 creates/s, 2.25 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: 25575, unzip_LRU len: 0
I/O sum[0]:cur[5], unzip sum[0]:cur[0]
---BUFFER POOL 4
Buffer pool size   120405
Free buffers       94568
Database pages     25837
Old database pages 9557
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 25798, created 39, written 26166
0.00 reads/s, 0.00 creates/s, 0.25 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: 25837, unzip_LRU len: 0
I/O sum[0]:cur[5], unzip sum[0]:cur[0]
---BUFFER POOL 5
Buffer pool size   120405
Free buffers       95606
Database pages     24799
Old database pages 9174
Modified db pages  2
Percent of dirty pages(LRU & free pages): 0.002
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 6, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 24780, created 19, written 16571
0.00 reads/s, 0.00 creates/s, 0.94 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: 24799, unzip_LRU len: 0
I/O sum[0]:cur[5], unzip sum[0]:cur[0]
---BUFFER POOL 6
Buffer pool size   120405
Free buffers       95343
Database pages     25062
Old database pages 9271
Modified db pages  1
Percent of dirty pages(LRU & free pages): 0.001
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 7, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 24930, created 132, written 17437
0.00 reads/s, 0.00 creates/s, 2.00 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: 25062, unzip_LRU len: 0
I/O sum[0]:cur[5], unzip sum[0]:cur[0]
---BUFFER POOL 7
Buffer pool size   120405
Free buffers       94236
Database pages     26169
Old database pages 9680
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 6, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 26092, created 77, written 6637
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: 26169, unzip_LRU len: 0
I/O sum[0]:cur[5], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=1381, Main thread ID=140031410816576, state: sleeping
Number of rows inserted 7479, updated 26261, deleted 30, read 30930446
0.00 inserts/s, 1.75 updates/s, 0.00 deletes/s, 2.56 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 20635
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================