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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2026-03-03 03:21:22 0xa3cc INNODB MONITOR OUTPUT
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Per second averages calculated from the last 8 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 1202 srv_active, 0 srv_shutdown, 870230 srv_idle
srv_master_thread log flush and writes: 871432
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 37793
OS WAIT ARRAY INFO: signal count 7583
RW-shared spins 1969, rounds 58891, OS waits 1924
RW-excl spins 12, rounds 152, OS waits 4
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 29.91 RW-shared, 12.67 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 86375
Purge done for trx's n:o < 86375 undo n:o < 0 state: running but idle
History list length 2
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 282742844293640, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282742844289432, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282742844285224, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282742844281016, 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
3685 OS file reads, 16732 OS file writes, 10967 OS fsyncs
10.12 reads/s, 16384 avg bytes/read, 12.87 writes/s, 9.87 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
13.87 hash searches/s, 60.24 non-hash searches/s
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LOG
---
Log sequence number 55607572
Log flushed up to   55607552
Pages flushed up to 55474221
Last checkpoint at  55473080
0 pending log flushes, 0 pending chkp writes
7198 log i/o's done, 7.62 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 33554432
Dictionary memory allocated 79616
Buffer pool size   1003
Free buffers       741
Database pages     260
Old database pages 0
Modified db pages  209
Percent of dirty pages(LRU & free pages): 20.858
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 3650, created 248, written 8187
10.12 reads/s, 0.37 creates/s, 4.12 writes/s
Buffer pool hit rate 959 / 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: 260, unzip_LRU len: 0
I/O sum[579]:cur[3], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=5312, Main thread ID=6964, state: sleeping
Number of rows inserted 0, updated 2071, deleted 0, read 14316
0.00 inserts/s, 6.12 updates/s, 0.00 deletes/s, 13.75 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1407
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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