Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2026-10-11 10:26:47 0x772d5a0886c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 47 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 7634 srv_active, 0 srv_shutdown, 2510139 srv_idle
srv_master_thread log flush and writes: 2517715
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 94356
OS WAIT ARRAY INFO: signal count 100994
RW-shared spins 84423, rounds 1752490, OS waits 46726
RW-excl spins 122814, rounds 772515, OS waits 6182
RW-sx spins 1982, rounds 54067, OS waits 1054
Spin rounds per wait: 20.76 RW-shared, 6.29 RW-excl, 27.28 RW-sx
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TRANSACTIONS
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Trx id counter 490614
Purge done for trx's n:o < 490614 undo n:o < 0 state: running
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 412511396425992, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 412511396421776, 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
2178234 OS file reads, 201551 OS file writes, 61228 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 12, seg size 14, 21064 merges
merged operations:
 insert 87054, delete mark 1727, delete 258
discarded operations:
 insert 0, delete mark 0, delete 0
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)
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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
0.09 hash searches/s, 0.09 non-hash searches/s
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LOG
---
Log sequence number 14287290776
Log flushed up to   14287290776
Pages flushed up to 14287290776
Last checkpoint at  14287290767
0 pending log flushes, 0 pending chkp writes
31266 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 92720
Buffer pool size   1003
Free buffers       741
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 151912, not young 92747607
0.00 youngs/s, 0.00 non-youngs/s
Pages read 2178193, created 2750, written 158508
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 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[0]:cur[0], 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=900376, Main thread ID=131035417274048, state: sleeping
Number of rows inserted 56614, updated 256686, deleted 762, read 305532442
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.11 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 15745
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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