Opslag-engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabelen
|
Buffer Pool
|
InnoDB-status
]
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2025-11-15 10:14:09 0x7f1ad80d4700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 9 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 24 srv_active, 0 srv_shutdown, 777 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 87
OS WAIT ARRAY INFO: signal count 87
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 2, rounds 60, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 9920
Purge done for trx's n:o < 9915 undo n:o < 0 state: running but idle
History list length 43
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421228391348840, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421228391349712, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421228391347968, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
--------
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
1352 OS file reads, 798 OS file writes, 285 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.44 writes/s, 0.44 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 2 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 0 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
296.41 hash searches/s, 137.32 non-hash searches/s
---
LOG
---
Log sequence number 50988149
Log buffer assigned up to 50988149
Log buffer completed up to 50988149
Log written up to 50988149
Log flushed up to 50988149
Added dirty pages up to 50988149
Pages flushed up to 50988149
Last checkpoint at 50988149
205 log i/o's done, 0.11 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 635699
Buffer pool size 8192
Free buffers 6797
Database pages 1379
Old database pages 489
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 350, not young 1758
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1235, created 165, written 501
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: 1379, unzip_LRU len: 0
I/O sum[14]: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=374, Main thread ID=139752907134720 , state=sleeping
Number of rows inserted 549, updated 393, deleted 0, read 489525
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 591.49 reads/s
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END OF INNODB MONITOR OUTPUT
============================
