Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variables
|
Buffer Pool
|
InnoDB Status
]
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2024-09-20 01:11:35 0x7f9e068e0700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 54 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 56 srv_active, 0 srv_shutdown, 592 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 110
OS WAIT ARRAY INFO: signal count 110
RW-shared spins 10, rounds 19, OS waits 9
RW-excl spins 6, rounds 150, OS waits 5
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.90 RW-shared, 25.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 10043
Purge done for trx's n:o < 10041 undo n:o < 0 state: running but idle
History list length 19
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421792732121704, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421792732120832, 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
1504 OS file reads, 1921 OS file writes, 714 OS fsyncs
1.37 reads/s, 16176 avg bytes/read, 0.91 writes/s, 0.59 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 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
614.51 hash searches/s, 241.42 non-hash searches/s
---
LOG
---
Log sequence number 51197175
Log buffer assigned up to 51197175
Log buffer completed up to 51197175
Log written up to 51197175
Log flushed up to 51197175
Added dirty pages up to 51197175
Pages flushed up to 51197175
Last checkpoint at 51197175
523 log i/o's done, 0.32 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 645809
Buffer pool size 8192
Free buffers 6611
Database pages 1566
Old database pages 597
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 512, not young 788
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1381, created 215, written 1199
0.00 reads/s, 0.00 creates/s, 0.00 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: 1566, unzip_LRU len: 0
I/O sum[96]: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=366, Main thread ID=140317246555904 , state=sleeping
Number of rows inserted 639, updated 535, deleted 55, read 847952
0.06 inserts/s, 0.06 updates/s, 0.00 deletes/s, 1097.00 reads/s
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END OF INNODB MONITOR OUTPUT
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