Opslag-engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabelen
|
Buffer Pool
|
InnoDB-status
]
=====================================
2025-07-13 23:56:43 0x7fc9ec0aa700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 46 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 21 srv_active, 0 srv_shutdown, 634 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 100
OS WAIT ARRAY INFO: signal count 98
RW-shared spins 7, rounds 12, OS waits 5
RW-excl spins 5, rounds 150, OS waits 5
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.71 RW-shared, 30.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 10109
Purge done for trx's n:o < 10109 undo n:o < 0 state: running but idle
History list length 2
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421980232327480, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421980232325736, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421980232324864, 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
1378 OS file reads, 1799 OS file writes, 615 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 6.15 writes/s, 0.93 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 1 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 0 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
274.84 hash searches/s, 162.97 non-hash searches/s
---
LOG
---
Log sequence number 51342399
Log buffer assigned up to 51342399
Log buffer completed up to 51342399
Log written up to 51342399
Log flushed up to 51342399
Added dirty pages up to 51342399
Pages flushed up to 51342399
Last checkpoint at 51342399
687 log i/o's done, 0.04 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 819051
Buffer pool size 8192
Free buffers 6705
Database pages 1471
Old database pages 523
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 510, not young 2146
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1245, created 232, written 985
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: 1471, unzip_LRU len: 0
I/O sum[286]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
1 read views open inside InnoDB
Process ID=363, Main thread ID=140504743216896 , state=sleeping
Number of rows inserted 465, updated 1010, deleted 0, read 358814
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 547.29 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
