Speicher-Engines

InnoDB

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

[ Variablen | Puffer-Pool | InnoDB-Status ]

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2025-12-01 01:59:01 0x2ac4 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 18 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 6143 srv_active, 0 srv_shutdown, 169918 srv_idle
srv_master_thread log flush and writes: 176061
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 29481
OS WAIT ARRAY INFO: signal count 7373
RW-shared spins 3230, rounds 89311, OS waits 2897
RW-excl spins 2581, rounds 12595, OS waits 123
RW-sx spins 8, rounds 236, OS waits 6
Spin rounds per wait: 27.65 RW-shared, 4.88 RW-excl, 29.50 RW-sx
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TRANSACTIONS
------------
Trx id counter 23267
Purge done for trx's n:o < 23267 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284018905694784, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284018905690616, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284018905682280, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284018905686448, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284018905678112, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284018905673944, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284018905669776, 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: 0; buffer pool: 0
17435 OS file reads, 79273 OS file writes, 44457 OS fsyncs
3.06 reads/s, 16384 avg bytes/read, 4.94 writes/s, 4.56 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 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 0 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)
17.28 hash searches/s, 44.89 non-hash searches/s
---
LOG
---
Log sequence number 13238470
Log flushed up to   13238470
Pages flushed up to 13184667
Last checkpoint at  13184623
0 pending log flushes, 0 pending chkp writes
22965 log i/o's done, 3.28 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 92648
Buffer pool size   1003
Free buffers       742
Database pages     256
Old database pages 0
Modified db pages  92
Percent of dirty pages(LRU & free pages): 9.209
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 17399, created 685, written 48199
3.06 reads/s, 0.22 creates/s, 1.06 writes/s
Buffer pool hit rate 981 / 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[68]:cur[6], 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=11860, Main thread ID=2644, state: sleeping
Number of rows inserted 122, updated 10705, deleted 62, read 215561
0.00 inserts/s, 2.61 updates/s, 0.00 deletes/s, 24.28 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 13224
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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