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Storage engines

InnoDB Dokumentasi

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]


=====================================
2025-09-18 14:47:49 0x7f9cbcfb6700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 30 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 950 srv_active, 0 srv_shutdown, 3593 srv_idle
srv_master_thread log flush and writes: 4542
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 3063
OS WAIT ARRAY INFO: signal count 2770
RW-shared spins 0, rounds 2333, OS waits 1166
RW-excl spins 0, rounds 271, OS waits 9
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 2333.00 RW-shared, 271.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 39779
Purge done for trx's n:o < 39779 undo n:o < 0 state: running but idle
History list length 14
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421786161263096, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421786161258840, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421786161254584, 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
860 OS file reads, 10921 OS file writes, 7133 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.93 writes/s, 0.83 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 9 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 25 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
0.23 hash searches/s, 0.57 non-hash searches/s
---
LOG
---
Log sequence number 10743679
Log flushed up to   10743679
Pages flushed up to 10743679
Last checkpoint at  10743670
0 pending log flushes, 0 pending chkp writes
4468 log i/o's done, 0.53 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 128256
Buffer pool size   16024
Free buffers       15126
Database pages     832
Old database pages 327
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 701, created 131, written 5562
0.00 reads/s, 0.00 creates/s, 0.30 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: 832, 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=901, Main thread ID=140310474651392, state: sleeping
Number of rows inserted 1, updated 1172, deleted 0, read 1077237
0.00 inserts/s, 0.10 updates/s, 0.00 deletes/s, 0.23 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2864
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================