Speicher-Engines

InnoDB

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

[ Variablen | Puffer-Pool | InnoDB-Status ]

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2026-11-06 15:04:49 0x2050 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 48 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 34085 srv_active, 0 srv_shutdown, 126652 srv_idle
srv_master_thread log flush and writes: 160737
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 485424
OS WAIT ARRAY INFO: signal count 70110
RW-shared spins 41022, rounds 1158733, OS waits 37092
RW-excl spins 1400, rounds 6315, OS waits 134
RW-sx spins 172, rounds 1671, OS waits 20
Spin rounds per wait: 28.25 RW-shared, 4.51 RW-excl, 9.72 RW-sx
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TRANSACTIONS
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Trx id counter 370305
Purge done for trx's n:o < 370305 undo n:o < 0 state: running but idle
History list length 6
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283931653595496, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283931653587160, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283931653582992, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283931653599664, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283931653591328, 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
714806 OS file reads, 435592 OS file writes, 291624 OS fsyncs
21.67 reads/s, 16384 avg bytes/read, 20.71 writes/s, 8.67 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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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 2 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)
27.17 hash searches/s, 67.08 non-hash searches/s
---
LOG
---
Log sequence number 246008271
Log flushed up to   246008251
Pages flushed up to 246006249
Last checkpoint at  245999584
0 pending log flushes, 0 pending chkp writes
165132 log i/o's done, 4.73 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 142728
Buffer pool size   1003
Free buffers       738
Database pages     258
Old database pages 0
Modified db pages  5
Percent of dirty pages(LRU & free pages): 0.502
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 11581, not young 5817
0.00 youngs/s, 0.00 non-youngs/s
Pages read 714744, created 2763, written 222605
21.67 reads/s, 0.19 creates/s, 14.31 writes/s
Buffer pool hit rate 923 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 4.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 258, unzip_LRU len: 0
I/O sum[1753]:cur[31], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=11176, Main thread ID=12076, state: sleeping
Number of rows inserted 7065, updated 45280, deleted 1759, read 36515633
0.00 inserts/s, 3.60 updates/s, 0.00 deletes/s, 371.16 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 5960
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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