Speicher-Engines

InnoDB

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

[ Variablen | Puffer-Pool | InnoDB-Status ]

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2026-05-26 18:55:54 0x6c50 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 29 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 12911 srv_active, 0 srv_shutdown, 14696 srv_idle
srv_master_thread log flush and writes: 27606
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 10698
OS WAIT ARRAY INFO: signal count 10443
RW-shared spins 3727, rounds 110671, OS waits 3680
RW-excl spins 1162, rounds 25664, OS waits 801
RW-sx spins 13, rounds 326, OS waits 9
Spin rounds per wait: 29.69 RW-shared, 22.09 RW-excl, 25.08 RW-sx
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TRANSACTIONS
------------
Trx id counter 60046
Purge done for trx's n:o < 60046 undo n:o < 0 state: running but idle
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284636351050448, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351046280, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351042112, not started flushing log
mysql tables in use 1, locked 1
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351037944, not started flushing log
mysql tables in use 1, locked 1
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351033776, not started flushing log
mysql tables in use 1, locked 1
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351029608, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351025440, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351021272, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351017104, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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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: 1; buffer pool: 0
59312 OS file reads, 140035 OS file writes, 78714 OS fsyncs
1.17 reads/s, 16384 avg bytes/read, 4.76 writes/s, 2.90 fsyncs/s
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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 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 1 buffer(s)
6.90 hash searches/s, 15.90 non-hash searches/s
---
LOG
---
Log sequence number 44986532
Log flushed up to   44982455
Pages flushed up to 44981305
Last checkpoint at  44971390
1 pending log flushes, 0 pending chkp writes
41144 log i/o's done, 1.55 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 959032
Buffer pool size   1003
Free buffers       737
Database pages     259
Old database pages 0
Modified db pages  29
Percent of dirty pages(LRU & free pages): 2.909
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 2, single page 0
Pages made young 557, not young 7799
0.00 youngs/s, 0.00 non-youngs/s
Pages read 58920, created 1176, written 84721
1.17 reads/s, 0.03 creates/s, 2.72 writes/s
Buffer pool hit rate 980 / 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[391]:cur[3], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=3932, Main thread ID=18616, state: flushing log
Number of rows inserted 124, updated 20422, deleted 23, read 590495
0.00 inserts/s, 0.72 updates/s, 0.00 deletes/s, 10.24 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 226162
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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