Storage engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[
Variabel
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Penampungan Penyangga
|
Status InnoDB
]
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2025-01-18 19:10:52 0xb3c INNODB MONITOR OUTPUT
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Per second averages calculated from the last 10 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 23556 srv_active, 0 srv_shutdown, 3812399 srv_idle
srv_master_thread log flush and writes: 3835955
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 15048
OS WAIT ARRAY INFO: signal count 15041
RW-shared spins 15673, rounds 450505, OS waits 14913
RW-excl spins 15, rounds 129, OS waits 4
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 28.74 RW-shared, 8.60 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 29799442
Purge done for trx's n:o < 29799442 undo n:o < 0 state: running but idle
History list length 1
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283504700535016, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283504700530840, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (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
122031 OS file reads, 155322 OS file writes, 110150 OS fsyncs
14.10 reads/s, 16384 avg bytes/read, 4.00 writes/s, 3.30 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 211, seg size 213, 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 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)
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)
2.40 hash searches/s, 6.10 non-hash searches/s
---
LOG
---
Log sequence number 7014870722
Log flushed up to 7014870722
Pages flushed up to 7014868726
Last checkpoint at 7014868644
0 pending log flushes, 0 pending chkp writes
60789 log i/o's done, 1.90 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 7123880
Buffer pool size 1003
Free buffers 741
Database pages 256
Old database pages 0
Modified db pages 21
Percent of dirty pages(LRU & free pages): 2.104
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1003, not young 1563549
0.00 youngs/s, 0.00 non-youngs/s
Pages read 119183, created 972, written 77129
14.10 reads/s, 0.00 creates/s, 1.60 writes/s
Buffer pool hit rate 591 / 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: 256, unzip_LRU len: 0
I/O sum[751]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=3296, Main thread ID=4500, state: sleeping
Number of rows inserted 0, updated 15276, deleted 0, read 18861710
0.00 inserts/s, 0.40 updates/s, 0.00 deletes/s, 12.20 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 385290
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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