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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2026-08-28 01:26:00 0x17ac INNODB MONITOR OUTPUT
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Per second averages calculated from the last 45 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 10533 srv_active, 0 srv_shutdown, 21374 srv_idle
srv_master_thread log flush and writes: 31907
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 8979
OS WAIT ARRAY INFO: signal count 8597
RW-shared spins 4997, rounds 145867, OS waits 4818
RW-excl spins 2691, rounds 13926, OS waits 126
RW-sx spins 2, rounds 60, OS waits 2
Spin rounds per wait: 29.19 RW-shared, 5.18 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 37154
Purge done for trx's n:o < 37154 undo n:o < 0 state: running
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284131811635416, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284131811631248, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
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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
33294 OS file reads, 121355 OS file writes, 70459 OS fsyncs
1.24 reads/s, 16384 avg bytes/read, 5.53 writes/s, 2.76 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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
4.27 hash searches/s, 9.42 non-hash searches/s
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LOG
---
Log sequence number 19282634
Log flushed up to   19282634
Pages flushed up to 19282634
Last checkpoint at  19278817
0 pending log flushes, 0 pending chkp writes
36463 log i/o's done, 1.51 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 272936
Buffer pool size   1003
Free buffers       739
Database pages     256
Old database pages 0
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 221, not young 99
0.00 youngs/s, 0.00 non-youngs/s
Pages read 33258, created 1145, written 72961
1.24 reads/s, 0.00 creates/s, 3.56 writes/s
Buffer pool hit rate 969 / 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: 256, unzip_LRU len: 0
I/O sum[193]:cur[23], 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=3428, Main thread ID=9988, state: sleeping
Number of rows inserted 1615, updated 15485, deleted 18, read 415313
0.00 inserts/s, 0.73 updates/s, 0.00 deletes/s, 4.22 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 50363
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 3.82 reads/s
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END OF INNODB MONITOR OUTPUT
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