Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variables
|
Buffer Pool
|
InnoDB Status
]
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2024-12-18 23:54:14 0x7f07cc04b700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 19 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 95 srv_active, 0 srv_shutdown, 411 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 522
OS WAIT ARRAY INFO: signal count 518
RW-shared spins 82, rounds 155, OS waits 73
RW-excl spins 74, rounds 1656, OS waits 49
RW-sx spins 3, rounds 33, OS waits 1
Spin rounds per wait: 1.89 RW-shared, 22.38 RW-excl, 11.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 12083
Purge done for trx's n:o < 12082 undo n:o < 0 state: running but idle
History list length 13
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421147094149736, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421147094148864, 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
1360 OS file reads, 8608 OS file writes, 3539 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
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 2 buffer(s)
Hash table size 34679, node heap has 3 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 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
1200.04 hash searches/s, 126.36 non-hash searches/s
---
LOG
---
Log sequence number 54406845
Log buffer assigned up to 54406845
Log buffer completed up to 54406845
Log written up to 54406845
Log flushed up to 54406845
Added dirty pages up to 54406845
Pages flushed up to 54406845
Last checkpoint at 54406845
4829 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 983613
Buffer pool size 8192
Free buffers 6222
Database pages 1952
Old database pages 727
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1239, created 713, written 3298
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: 1952, 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=368, Main thread ID=139671608960768 , state=sleeping
Number of rows inserted 5650, updated 2094, deleted 973, read 940687
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 2374.35 reads/s
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END OF INNODB MONITOR OUTPUT
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