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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2026-02-17 06:06:48 0x7901640e46c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 46 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 486 srv_active, 0 srv_shutdown, 59138 srv_idle
srv_master_thread log flush and writes: 59623
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 77759
OS WAIT ARRAY INFO: signal count 61153
RW-shared spins 37209, rounds 1116257, OS waits 30558
RW-excl spins 6, rounds 300, OS waits 9
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 30.00 RW-shared, 50.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 5547404
Purge done for trx's n:o < 5547404 undo n:o < 0 state: running but idle
History list length 9
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 414521634287880, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 414521634283664, 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: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (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
1253765 OS file reads, 4251 OS file writes, 1873 OS fsyncs
115.24 reads/s, 16384 avg bytes/read, 7.09 writes/s, 2.85 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 368, seg size 370, 8 merges
merged operations:
 insert 66, delete mark 0, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
Hash table size 4441, node heap has 2 buffer(s)
Hash table size 4441, node heap has 3 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 2 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
1119.63 hash searches/s, 479.75 non-hash searches/s
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LOG
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Log sequence number 2354203933
Log flushed up to   2354203933
Pages flushed up to 2354201624
Last checkpoint at  2354182465
0 pending log flushes, 0 pending chkp writes
1173 log i/o's done, 1.72 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 390400
Buffer pool size   1003
Free buffers       726
Database pages     258
Old database pages 0
Modified db pages  5
Percent of dirty pages(LRU & free pages): 0.508
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 4038, not young 44042611
2.28 youngs/s, 2808.85 non-youngs/s
Pages read 1253599, created 166, written 2815
115.24 reads/s, 0.07 creates/s, 4.93 writes/s
Buffer pool hit rate 978 / 1000, young-making rate 0 / 1000 not 520 / 1000
Pages read ahead 2.09/s, evicted without access 0.41/s, Random read ahead 0.00/s
LRU len: 258, unzip_LRU len: 0
I/O sum[5493]:cur[17], 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=805790, Main thread ID=133045998839488, state: sleeping
Number of rows inserted 45, updated 677, deleted 0, read 96265537
0.00 inserts/s, 1.35 updates/s, 0.00 deletes/s, 1607.10 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 3535
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 3.76 reads/s
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END OF INNODB MONITOR OUTPUT
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