Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variables
|
Buffer Pool
|
InnoDB Status
]
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2024-05-19 02:24:15 0x7fdc63586700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 21 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 148 srv_active, 0 srv_shutdown, 360 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 3321
OS WAIT ARRAY INFO: signal count 3182
RW-shared spins 462, rounds 874, OS waits 411
RW-excl spins 518, rounds 4933, OS waits 88
RW-sx spins 3, rounds 90, OS waits 3
Spin rounds per wait: 1.89 RW-shared, 9.52 RW-excl, 30.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 19582
Purge done for trx's n:o < 19574 undo n:o < 0 state: running but idle
History list length 24
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422059593566824, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422059593565952, 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
1392 OS file reads, 34786 OS file writes, 14452 OS fsyncs
0.19 reads/s, 12544 avg bytes/read, 4.19 writes/s, 2.76 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 2 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 10 buffer(s)
837.58 hash searches/s, 332.32 non-hash searches/s
---
LOG
---
Log sequence number 79318900
Log buffer assigned up to 79318900
Log buffer completed up to 79318900
Log written up to 79318900
Log flushed up to 79318900
Added dirty pages up to 79318900
Pages flushed up to 79318900
Last checkpoint at 79318900
27088 log i/o's done, 1.86 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 2273657
Buffer pool size 8192
Free buffers 3715
Database pages 4450
Old database pages 1622
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 4157, not young 1391
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1255, created 3198, written 5921
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: 4450, unzip_LRU len: 0
I/O sum[2313]: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=358, Main thread ID=140584109131520 , state=sleeping
Number of rows inserted 19283, updated 33199, deleted 11808, read 464517
0.62 inserts/s, 0.29 updates/s, 0.00 deletes/s, 1411.17 reads/s
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END OF INNODB MONITOR OUTPUT
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