Opslag-engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabelen
|
Buffer Pool
|
InnoDB-status
]
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2025-07-13 16:24:12 0x7f51600aa700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 16 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 13 srv_active, 0 srv_shutdown, 490 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 36
OS WAIT ARRAY INFO: signal count 36
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9801
Purge done for trx's n:o < 9801 undo n:o < 0 state: running but idle
History list length 71
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421462623833552, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421462623832680, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421462623831808, 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
1267 OS file reads, 396 OS file writes, 157 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 0 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 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
452.72 hash searches/s, 176.18 non-hash searches/s
---
LOG
---
Log sequence number 50959646
Log buffer assigned up to 50959646
Log buffer completed up to 50959646
Log written up to 50959646
Log flushed up to 50959646
Added dirty pages up to 50959646
Pages flushed up to 50959646
Last checkpoint at 50959646
87 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 554397
Buffer pool size 8192
Free buffers 6885
Database pages 1295
Old database pages 458
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 43, not young 4
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1152, created 146, written 244
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: 1295, unzip_LRU len: 0
I/O sum[9]: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=368, Main thread ID=139987138053888 , state=sleeping
Number of rows inserted 49, updated 338, deleted 0, read 298600
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 739.64 reads/s
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END OF INNODB MONITOR OUTPUT
============================
