Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2026-08-13 20:40:20 0x7916f7fb46c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 33 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 216 srv_active, 0 srv_shutdown, 223842 srv_idle
srv_master_thread log flush and writes: 224048
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 6302
OS WAIT ARRAY INFO: signal count 8791
RW-shared spins 6948, rounds 82812, OS waits 1367
RW-excl spins 18458, rounds 117051, OS waits 712
RW-sx spins 145, rounds 4251, OS waits 88
Spin rounds per wait: 11.92 RW-shared, 6.34 RW-excl, 29.32 RW-sx
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TRANSACTIONS
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Trx id counter 424821
Purge done for trx's n:o < 424821 undo n:o < 0 state: running but idle
History list length 6
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 414614482002184, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 414614481997968, 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
116360 OS file reads, 18374 OS file writes, 2731 OS fsyncs
0.09 reads/s, 16384 avg bytes/read, 0.85 writes/s, 0.42 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, 3027 merges
merged operations:
 insert 12175, delete mark 8, 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 5 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)
1.85 hash searches/s, 4.42 non-hash searches/s
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LOG
---
Log sequence number 14104772994
Log flushed up to   14104772974
Pages flushed up to 14104770468
Last checkpoint at  14104764048
0 pending log flushes, 0 pending chkp writes
1274 log i/o's done, 0.24 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 92720
Buffer pool size   1003
Free buffers       734
Database pages     258
Old database pages 0
Modified db pages  7
Percent of dirty pages(LRU & free pages): 0.705
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 11306, not young 4485751
0.00 youngs/s, 0.00 non-youngs/s
Pages read 116319, created 472, written 16493
0.09 reads/s, 0.09 creates/s, 0.55 writes/s
Buffer pool hit rate 994 / 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: 258, unzip_LRU len: 0
I/O sum[20]:cur[1], 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=795058, Main thread ID=133138642609856, state: sleeping
Number of rows inserted 8770, updated 35857, deleted 0, read 25083722
0.00 inserts/s, 0.21 updates/s, 0.00 deletes/s, 4.48 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2873
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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