Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2025-11-03 01:10:07 0x7f4164060700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 53 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 1404 srv_active, 0 srv_shutdown, 2659 srv_idle
srv_master_thread log flush and writes: 4062
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 6394
OS WAIT ARRAY INFO: signal count 5643
RW-shared spins 0, rounds 2545, OS waits 1257
RW-excl spins 0, rounds 440, OS waits 15
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 2545.00 RW-shared, 440.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 45085
Purge done for trx's n:o < 45085 undo n:o < 0 state: running but idle
History list length 13
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421393595679224, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421393595674968, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421393595670712, 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, 23254 OS file writes, 11016 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 7.72 writes/s, 3.34 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)
4.00 hash searches/s, 2.89 non-hash searches/s
---
LOG
---
Log sequence number 14018705
Log flushed up to   14018584
Pages flushed up to 14009035
Last checkpoint at  14008793
0 pending log flushes, 0 pending chkp writes
7632 log i/o's done, 2.23 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 128256
Buffer pool size   16024
Free buffers       15121
Database pages     837
Old database pages 328
Modified db pages  18
Percent of dirty pages(LRU & free pages): 0.113
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 133, written 14441
0.00 reads/s, 0.00 creates/s, 5.08 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: 837, unzip_LRU len: 0
I/O sum[0]: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=917, Main thread ID=139918047160064, state: sleeping
Number of rows inserted 1, updated 3699, deleted 0, read 1265752
0.00 inserts/s, 1.21 updates/s, 0.00 deletes/s, 2.66 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 6874
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 5.62 reads/s
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END OF INNODB MONITOR OUTPUT
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