Speicher-Engines

InnoDB

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

[ Variablen | Puffer-Pool | InnoDB-Status ]

=====================================
2026-09-23 11:57:15 0xfa4 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 9 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 13163 srv_active, 0 srv_shutdown, 5282 srv_idle
srv_master_thread log flush and writes: 18445
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 191110
OS WAIT ARRAY INFO: signal count 21772
RW-shared spins 3123, rounds 91844, OS waits 2959
RW-excl spins 461, rounds 5766, OS waits 146
RW-sx spins 6, rounds 151, OS waits 5
Spin rounds per wait: 29.41 RW-shared, 12.51 RW-excl, 25.17 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 92612
Purge done for trx's n:o < 92612 undo n:o < 0 state: running
History list length 12
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284496381354200, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381420888, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381416720, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284496381358368, 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
88939 OS file reads, 178198 OS file writes, 95622 OS fsyncs
2.33 reads/s, 16384 avg bytes/read, 11.33 writes/s, 4.33 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)
12.89 hash searches/s, 34.11 non-hash searches/s
---
LOG
---
Log sequence number 57999693
Log flushed up to   57999673
Pages flushed up to 57985642
Last checkpoint at  57985589
0 pending log flushes, 0 pending chkp writes
49064 log i/o's done, 3.33 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 848856
Buffer pool size   1003
Free buffers       735
Database pages     261
Old database pages 0
Modified db pages  44
Percent of dirty pages(LRU & free pages): 4.413
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 88597, created 1628, written 110828
2.33 reads/s, 0.22 creates/s, 7.55 writes/s
Buffer pool hit rate 978 / 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: 261, unzip_LRU len: 0
I/O sum[255]: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=10532, Main thread ID=10316, state: sleeping
Number of rows inserted 180, updated 29098, deleted 55, read 972391
0.00 inserts/s, 2.33 updates/s, 0.00 deletes/s, 13.00 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 150693
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================