Speicher-Engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variablen
|
Puffer-Pool
|
InnoDB-Status
]
=====================================
2026-04-02 14:12:35 0x7f24e4085700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 29 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 42 srv_active, 0 srv_shutdown, 665 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 100
OS WAIT ARRAY INFO: signal count 100
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 3, rounds 91, OS waits 4
RW-sx spins 1, rounds 19, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 30.33 RW-excl, 19.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 10001
Purge done for trx's n:o < 9994 undo n:o < 0 state: running but idle
History list length 35
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421271970836792, not started flushing log
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421271970837664, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421271970835048, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421271970834176, 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: 1; buffer pool: 0
1543 OS file reads, 1013 OS file writes, 414 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.24 writes/s, 0.17 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 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 8 buffer(s)
2556.19 hash searches/s, 1900.90 non-hash searches/s
---
LOG
---
Log sequence number 51001770
Log buffer assigned up to 51001770
Log buffer completed up to 51001770
Log written up to 51001770
Log flushed up to 51001426
Added dirty pages up to 51000345
Pages flushed up to 51000345
Last checkpoint at 51000345
268 log i/o's done, 0.25 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 831191
Buffer pool size 8192
Free buffers 6628
Database pages 1544
Old database pages 549
Modified db pages 10
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 291, not young 383
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1398, created 162, written 622
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: 1544, unzip_LRU len: 0
I/O sum[6]: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=371, Main thread ID=139796484658944 , state=sleeping
Number of rows inserted 1812, updated 418, deleted 0, read 2147019
0.00 inserts/s, 0.14 updates/s, 0.00 deletes/s, 3234.37 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
