ストレージエンジン

InnoDB

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

[ 変数 | バッファプール | InnoDB ステータス ]

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2026-09-23 17:41:42 0x5e74 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 43 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 34415 srv_active, 0 srv_shutdown, 395268 srv_idle
srv_master_thread log flush and writes: 429683
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 1570375
OS WAIT ARRAY INFO: signal count 179682
RW-shared spins 33851, rounds 1013480, OS waits 32026
RW-excl spins 333, rounds 9489, OS waits 286
RW-sx spins 7, rounds 127, OS waits 3
Spin rounds per wait: 29.94 RW-shared, 28.50 RW-excl, 18.14 RW-sx
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TRANSACTIONS
------------
Trx id counter 489973
Purge done for trx's n:o < 489973 undo n:o < 0 state: running
History list length 9
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283098671813576, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283098671809368, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283098671800952, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283098671792536, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283098671788328, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283098671817784, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283098671796744, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283098671805160, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283098671784120, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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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
33850 OS file reads, 425544 OS file writes, 268604 OS fsyncs
1.67 reads/s, 16384 avg bytes/read, 10.70 writes/s, 5.44 fsyncs/s
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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 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
11.23 hash searches/s, 37.16 non-hash searches/s
---
LOG
---
Log sequence number 300059066
Log flushed up to   300059046
Pages flushed up to 300050631
Last checkpoint at  300048249
0 pending log flushes, 0 pending chkp writes
156101 log i/o's done, 2.98 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 79616
Buffer pool size   1003
Free buffers       741
Database pages     259
Old database pages 0
Modified db pages  16
Percent of dirty pages(LRU & free pages): 1.598
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 33815, created 2290, written 228391
1.67 reads/s, 0.09 creates/s, 6.72 writes/s
Buffer pool hit rate 984 / 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: 259, unzip_LRU len: 0
I/O sum[371]:cur[6], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=4900, Main thread ID=6596, state: sleeping
Number of rows inserted 0, updated 51598, deleted 0, read 625680
0.00 inserts/s, 1.88 updates/s, 0.00 deletes/s, 11.16 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 144179
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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