Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2025-12-04 15:22:46 0x7f14f806a700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 55 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 5542 srv_active, 0 srv_shutdown, 8222 srv_idle
srv_master_thread log flush and writes: 13762
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 17906
OS WAIT ARRAY INFO: signal count 15643
RW-shared spins 0, rounds 9708, OS waits 4824
RW-excl spins 0, rounds 1482, OS waits 50
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 9708.00 RW-shared, 1482.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 60871
Purge done for trx's n:o < 60871 undo n:o < 0 state: running but idle
History list length 14
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421202789466776, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421202789462520, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421202789458264, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421202789454008, 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 completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (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
863 OS file reads, 79453 OS file writes, 41555 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 6.75 writes/s, 3.44 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 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 9 buffer(s)
Hash table size 69257, node heap has 2 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 3 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
4.31 hash searches/s, 0.53 non-hash searches/s
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LOG
---
Log sequence number 24645478
Log flushed up to   24645363
Pages flushed up to 24637345
Last checkpoint at  24637336
0 pending log flushes, 0 pending chkp writes
26668 log i/o's done, 2.35 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 128256
Buffer pool size   16024
Free buffers       15108
Database pages     850
Old database pages 329
Modified db pages  13
Percent of dirty pages(LRU & free pages): 0.081
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 704, created 146, written 47381
0.00 reads/s, 0.00 creates/s, 4.02 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: 850, 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=903, Main thread ID=139727315343104, state: sleeping
Number of rows inserted 1, updated 11317, deleted 0, read 843966
0.00 inserts/s, 1.02 updates/s, 0.00 deletes/s, 2.29 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 5377
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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