Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2026-06-06 05:09:31 0x7fac5813f700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 46 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 17898 srv_active, 0 srv_shutdown, 2210375 srv_idle
srv_master_thread log flush and writes: 2227380
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 54154
OS WAIT ARRAY INFO: signal count 47594
RW-shared spins 37098, rounds 1112906, OS waits 37096
RW-excl spins 97, rounds 3030, OS waits 98
RW-sx spins 40, rounds 1200, OS waits 19
Spin rounds per wait: 30.00 RW-shared, 31.24 RW-excl, 30.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 452201
Purge done for trx's n:o < 452201 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421853184774968, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421853184762200, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421853184770712, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421853184766456, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421853184757944, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
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
25654 OS file reads, 223421 OS file writes, 169048 OS fsyncs
3.57 reads/s, 16384 avg bytes/read, 12.61 writes/s, 5.50 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
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 0 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)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
12.17 hash searches/s, 47.04 non-hash searches/s
---
LOG
---
Log sequence number 210585825
Log flushed up to   210585825
Pages flushed up to 210559060
Last checkpoint at  210506376
0 pending log flushes, 0 pending chkp writes
111880 log i/o's done, 4.04 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 75144
Buffer pool size   1003
Free buffers       743
Database pages     257
Old database pages 0
Modified db pages  59
Percent of dirty pages(LRU & free pages): 5.894
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 25620, created 531, written 91835
3.57 reads/s, 0.17 creates/s, 7.87 writes/s
Buffer pool hit rate 977 / 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: 257, unzip_LRU len: 0
I/O sum[647]: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=2033623, Main thread ID=140377734485760, state: sleeping
Number of rows inserted 0, updated 18462, deleted 0, read 188701
0.00 inserts/s, 3.30 updates/s, 0.00 deletes/s, 8.48 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 8159
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.43 reads/s
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END OF INNODB MONITOR OUTPUT
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