Opslag-engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabelen
|
Buffer Pool
|
InnoDB-status
]
=====================================
2025-09-18 00:06:15 0x7eff700cd700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 10 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 17 srv_active, 0 srv_shutdown, 236 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 38
OS WAIT ARRAY INFO: signal count 38
RW-shared spins 1, rounds 1, 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: 1.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9891
Purge done for trx's n:o < 9891 undo n:o < 0 state: running but idle
History list length 116
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421111103343208, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421111103342336, 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
1301 OS file reads, 936 OS file writes, 192 OS fsyncs
0.80 reads/s, 16384 avg bytes/read, 13.80 writes/s, 1.10 fsyncs/s
-------------------------------------
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 0 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 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
3847.52 hash searches/s, 2372.96 non-hash searches/s
---
LOG
---
Log sequence number 50978801
Log buffer assigned up to 50978801
Log buffer completed up to 50978801
Log written up to 50978801
Log flushed up to 50978801
Added dirty pages up to 50978801
Pages flushed up to 50978801
Last checkpoint at 50978801
170 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 539311
Buffer pool size 8192
Free buffers 6826
Database pages 1348
Old database pages 504
Modified db pages 1
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 237, not young 2210
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1204, created 680, written 456
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 5 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 1348, unzip_LRU len: 0
I/O sum[54]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=366, Main thread ID=139635616319232 , state=sleeping
Number of rows inserted 163870, updated 383, deleted 0, read 412464
4916.51 inserts/s, 0.00 updates/s, 0.00 deletes/s, 11882.71 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
