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InnoDB 문서

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

[ 환경설정값 | 버퍼풀 | InnoDB 상태 ]


=====================================
2025-04-18 22:05:47 0x7f9e14a8b700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 2 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 3254 srv_active, 0 srv_shutdown, 32897 srv_idle
srv_master_thread log flush and writes: 36150
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 17530
OS WAIT ARRAY INFO: signal count 11866
RW-shared spins 0, rounds 9883, OS waits 4931
RW-excl spins 0, rounds 1314, OS waits 40
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 9883.00 RW-shared, 1314.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 45166
Purge done for trx's n:o < 45166 undo n:o < 0 state: running but idle
History list length 12
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421791904887288, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421791904883032, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421791904878776, 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
865 OS file reads, 38270 OS file writes, 26185 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.50 writes/s, 0.50 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)
1.00 hash searches/s, 1.00 non-hash searches/s
---
LOG
---
Log sequence number 14125333
Log flushed up to   14125212
Pages flushed up to 14124538
Last checkpoint at  14124529
0 pending log flushes, 0 pending chkp writes
16586 log i/o's done, 0.50 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 219104
Buffer pool size   16024
Free buffers       14949
Database pages     1007
Old database pages 351
Modified db pages  3
Percent of dirty pages(LRU & free pages): 0.019
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 706, created 301, written 18498
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: 1007, 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=910, Main thread ID=140316153726720, state: sleeping
Number of rows inserted 89, updated 3621, deleted 0, read 2009942
0.00 inserts/s, 0.50 updates/s, 0.00 deletes/s, 1.00 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 12150
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================