Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2026-07-31 13:49:23 0x7ad985e886c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 16 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 17031 srv_active, 0 srv_shutdown, 2162781 srv_idle
srv_master_thread log flush and writes: 2179747
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 51353
OS WAIT ARRAY INFO: signal count 20838
RW-shared spins 0, rounds 8562, OS waits 4229
RW-excl spins 0, rounds 5590, OS waits 157
RW-sx spins 2, rounds 60, OS waits 2
Spin rounds per wait: 8562.00 RW-shared, 5590.00 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 707709
Purge done for trx's n:o < 707709 undo n:o < 0 state: running but idle
History list length 11
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 416549753381528, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 416549753377272, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 416549753373016, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 416549753368760, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
--------
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
60332 OS file reads, 191267 OS file writes, 104682 OS fsyncs
10.69 reads/s, 16384 avg bytes/read, 10.81 writes/s, 5.06 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 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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
17.19 hash searches/s, 77.12 non-hash searches/s
---
LOG
---
Log sequence number 188856696
Log flushed up to   188856676
Pages flushed up to 188839604
Last checkpoint at  188786145
0 pending log flushes, 0 pending chkp writes
53659 log i/o's done, 4.31 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 347360
Buffer pool size   1001
Free buffers       734
Database pages     260
Old database pages 0
Modified db pages  46
Percent of dirty pages(LRU & free pages): 4.623
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 359, not young 365
0.00 youngs/s, 0.00 non-youngs/s
Pages read 60081, created 1400, written 119649
10.69 reads/s, 0.44 creates/s, 6.12 writes/s
Buffer pool hit rate 956 / 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[390]:cur[6], 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=2699, Main thread ID=135074389399232, state: sleeping
Number of rows inserted 181, updated 26694, deleted 120, read 3056688
0.00 inserts/s, 3.50 updates/s, 0.00 deletes/s, 65.06 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 94499
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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