Speicher-Engines

InnoDB

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

[ Variablen | Puffer-Pool | InnoDB-Status ]

=====================================
2026-09-23 11:14:16 0xfa4 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 6 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 12133 srv_active, 0 srv_shutdown, 3740 srv_idle
srv_master_thread log flush and writes: 15873
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 169589
OS WAIT ARRAY INFO: signal count 19346
RW-shared spins 2882, rounds 84816, OS waits 2737
RW-excl spins 444, rounds 5278, OS waits 130
RW-sx spins 5, rounds 121, OS waits 4
Spin rounds per wait: 29.43 RW-shared, 11.89 RW-excl, 24.20 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 86502
Purge done for trx's n:o < 86502 undo n:o < 0 state: running
History list length 4
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284496381358368, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381354200, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381408384, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381404216, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381400048, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381395880, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381391712, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381387544, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381383376, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381379208, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381375040, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381370872, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381366704, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381350032, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381362536, 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
82772 OS file reads, 163181 OS file writes, 87814 OS fsyncs
11.16 reads/s, 16384 avg bytes/read, 16.00 writes/s, 10.83 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 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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
28.83 hash searches/s, 87.32 non-hash searches/s
---
LOG
---
Log sequence number 54550804
Log flushed up to   54550784
Pages flushed up to 54472837
Last checkpoint at  54447050
0 pending log flushes, 0 pending chkp writes
44614 log i/o's done, 8.67 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 848856
Buffer pool size   1003
Free buffers       737
Database pages     259
Old database pages 0
Modified db pages  147
Percent of dirty pages(LRU & free pages): 14.744
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 756, not young 36220
0.00 youngs/s, 0.00 non-youngs/s
Pages read 82430, created 1479, written 101649
11.16 reads/s, 0.33 creates/s, 6.33 writes/s
Buffer pool hit rate 968 / 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: 259, unzip_LRU len: 0
I/O sum[1911]:cur[13], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=10532, Main thread ID=10316, state: sleeping
Number of rows inserted 178, updated 26186, deleted 55, read 912690
0.00 inserts/s, 7.67 updates/s, 0.00 deletes/s, 99.82 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 141024
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================