Storage engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[
Variabel
|
Penampungan Penyangga
|
Status InnoDB
]
=====================================
2026-06-14 04:58:14 0x2a54 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 63 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 6564 srv_active, 0 srv_shutdown, 69713 srv_idle
srv_master_thread log flush and writes: 76277
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 49333
OS WAIT ARRAY INFO: signal count 15563
RW-shared spins 10189, rounds 301247, OS waits 9902
RW-excl spins 320, rounds 7032, OS waits 205
RW-sx spins 59, rounds 1567, OS waits 48
Spin rounds per wait: 29.57 RW-shared, 21.98 RW-excl, 26.56 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 2599107
Purge done for trx's n:o < 2599107 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283273756299672, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283273756295464, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283273756291256, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (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
61386 OS file reads, 91023 OS file writes, 54941 OS fsyncs
0.43 reads/s, 16384 avg bytes/read, 2.73 writes/s, 1.90 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 90, seg size 92, 7 merges
merged operations:
insert 7, delete mark 0, delete 0
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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
1.30 hash searches/s, 3.98 non-hash searches/s
---
LOG
---
Log sequence number 1397550940
Log flushed up to 1397550404
Pages flushed up to 1397550404
Last checkpoint at 1397550361
0 pending log flushes, 0 pending chkp writes
34830 log i/o's done, 1.16 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 1273856
Buffer pool size 1003
Free buffers 737
Database pages 258
Old database pages 0
Modified db pages 20
Percent of dirty pages(LRU & free pages): 2.008
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 368, not young 50861
0.00 youngs/s, 0.00 non-youngs/s
Pages read 60870, created 626, written 49001
0.43 reads/s, 0.00 creates/s, 1.32 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: 258, unzip_LRU len: 0
I/O sum[85]:cur[2], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=8876, Main thread ID=6404, state: sleeping
Number of rows inserted 1702, updated 9312, deleted 33, read 51298153
0.00 inserts/s, 0.27 updates/s, 0.00 deletes/s, 2.81 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 17749
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
