Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

=====================================
2026-01-30 23:28:39 0x7f6ae8117700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 27 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 18239 srv_active, 0 srv_shutdown, 27149 srv_idle
srv_master_thread log flush and writes: 45376
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 53072
OS WAIT ARRAY INFO: signal count 43237
RW-shared spins 0, rounds 29093, OS waits 14502
RW-excl spins 0, rounds 4830, OS waits 160
RW-sx spins 3, rounds 90, OS waits 3
Spin rounds per wait: 29093.00 RW-shared, 4830.00 RW-excl, 30.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 102027
Purge done for trx's n:o < 102027 undo n:o < 0 state: running but idle
History list length 8
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421571901927928, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421571901923672, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421571901919416, 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
863 OS file reads, 234020 OS file writes, 124337 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 5.96 writes/s, 3.07 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 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 10 buffer(s)
Hash table size 69257, node heap has 2 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 3 buffer(s)
Hash table size 69257, node heap has 26 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
2.15 hash searches/s, 0.89 non-hash searches/s
---
LOG
---
Log sequence number 52679347
Log flushed up to   52679347
Pages flushed up to 52679347
Last checkpoint at  52676861
0 pending log flushes, 0 pending chkp writes
79500 log i/o's done, 1.96 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 128256
Buffer pool size   16024
Free buffers       15106
Database pages     850
Old database pages 332
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 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 704, created 146, written 139202
0.00 reads/s, 0.00 creates/s, 3.63 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: 850, 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=904, Main thread ID=140096355411712, state: sleeping
Number of rows inserted 2, updated 31752, deleted 0, read 2264631
0.00 inserts/s, 0.63 updates/s, 0.00 deletes/s, 1.30 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 12602
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================