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InnoDB 문서

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

[ 환경설정값 | 버퍼풀 | InnoDB 상태 ]


=====================================
2025-12-16 13:07:57 0x7fb5dd235700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 8 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 1303 srv_active, 0 srv_shutdown, 2633 srv_idle
srv_master_thread log flush and writes: 3935
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 4947
OS WAIT ARRAY INFO: signal count 3833
RW-shared spins 0, rounds 2454, OS waits 1224
RW-excl spins 0, rounds 390, OS waits 13
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 2454.00 RW-shared, 390.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 41627
Purge done for trx's n:o < 41627 undo n:o < 0 state: running but idle
History list length 8
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421894074327864, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421894074323608, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421894074319352, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421894074315096, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421894074310840, 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
862 OS file reads, 15850 OS file writes, 8997 OS fsyncs
0.12 reads/s, 16384 avg bytes/read, 11.87 writes/s, 4.62 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 0 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)
4.25 hash searches/s, 3.37 non-hash searches/s
---
LOG
---
Log sequence number 11921469
Log flushed up to   11921469
Pages flushed up to 11918834
Last checkpoint at  11912057
0 pending log flushes, 0 pending chkp writes
5823 log i/o's done, 2.38 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 128256
Buffer pool size   16024
Free buffers       15125
Database pages     834
Old database pages 327
Modified db pages  5
Percent of dirty pages(LRU & free pages): 0.031
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 703, created 131, written 8957
0.12 reads/s, 0.00 creates/s, 8.75 writes/s
Buffer pool hit rate 997 / 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: 834, 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=913, Main thread ID=140418601633536, state: sleeping
Number of rows inserted 1, updated 2051, deleted 0, read 840470
0.00 inserts/s, 1.25 updates/s, 0.00 deletes/s, 3.00 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1770
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================