Speicher-Engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variablen
|
Puffer-Pool
|
InnoDB-Status
]
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2026-04-02 12:47:14 0x7fcea01db700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 0 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 16 srv_active, 0 srv_shutdown, 70 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 58
OS WAIT ARRAY INFO: signal count 58
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 0, rounds 2, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 2.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9925
Purge done for trx's n:o < 9925 undo n:o < 0 state: running but idle
History list length 19
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422001054644840, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422001054643968, 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
1439 OS file reads, 765 OS file writes, 231 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 25 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 30 buffer(s)
384000.00 hash searches/s, 8000.00 non-hash searches/s
---
LOG
---
Log sequence number 50989397
Log buffer assigned up to 50989397
Log buffer completed up to 50989397
Log written up to 50989397
Log flushed up to 50989397
Added dirty pages up to 50989397
Pages flushed up to 50989397
Last checkpoint at 50989397
197 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 599199
Buffer pool size 8192
Free buffers 6655
Database pages 1465
Old database pages 520
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 299, not young 3214
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1320, created 251, written 452
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: 1465, unzip_LRU len: 0
I/O sum[227]: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=365, Main thread ID=140525569255168 , state=sleeping
Number of rows inserted 8513, updated 395, deleted 0, read 539969
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 900000.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
