Speicher-Engines

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variablen | Puffer-Pool | InnoDB-Status ]

=====================================
2026-03-06 15:16:31 0x27fe0 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 4 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 7161 srv_active, 0 srv_shutdown, 194815 srv_idle
srv_master_thread log flush and writes: 201976
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 7132
OS WAIT ARRAY INFO: signal count 3530
RW-shared spins 2138, rounds 60715, OS waits 1998
RW-excl spins 129, rounds 2704, OS waits 84
RW-sx spins 4, rounds 54, OS waits 0
Spin rounds per wait: 28.40 RW-shared, 20.96 RW-excl, 13.50 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 51546
Purge done for trx's n:o < 51546 undo n:o < 0 state: running but idle
History list length 8
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284213970768952, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970764784, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970760616, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970756448, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970752280, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970748112, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970743944, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970739776, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970735608, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970731440, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970727272, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970723104, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970718936, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284213970714768, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (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
20555 OS file reads, 87753 OS file writes, 47831 OS fsyncs
0.50 reads/s, 16384 avg bytes/read, 0.50 writes/s, 0.50 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 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
22.24 hash searches/s, 5.75 non-hash searches/s
---
LOG
---
Log sequence number 17789171
Log flushed up to   17789151
Pages flushed up to 17786682
Last checkpoint at  17786673
0 pending log flushes, 0 pending chkp writes
24735 log i/o's done, 0.50 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 105168
Buffer pool size   1003
Free buffers       741
Database pages     256
Old database pages 0
Modified db pages  5
Percent of dirty pages(LRU & free pages): 0.501
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 20510, created 603, written 54555
0.50 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 990 / 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: 256, unzip_LRU len: 0
I/O sum[0]:cur[2], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=4152, Main thread ID=5920, state: sleeping
Number of rows inserted 89, updated 13420, deleted 15, read 508792
0.00 inserts/s, 0.50 updates/s, 0.00 deletes/s, 22.49 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 14090
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================