Speicher-Engines

InnoDB

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

[ Variablen | Puffer-Pool | InnoDB-Status ]

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2026-10-03 00:19:21 0x81e4 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 18 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 2360 srv_active, 0 srv_shutdown, 1250478 srv_idle
srv_master_thread log flush and writes: 1252799
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 2274
OS WAIT ARRAY INFO: signal count 1907
RW-shared spins 814, rounds 20576, OS waits 658
RW-excl spins 58, rounds 679, OS waits 14
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 25.28 RW-shared, 11.71 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 10740
Purge done for trx's n:o < 10740 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284153255227968, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284153255223800, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284153255219632, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284153255215464, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284153255211296, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284153255207128, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284153255202960, 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
8427 OS file reads, 31719 OS file writes, 17308 OS fsyncs
4.06 reads/s, 16384 avg bytes/read, 16.11 writes/s, 8.72 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 0 buffer(s)
Hash table size 4441, node heap has 0 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)
14.05 hash searches/s, 33.50 non-hash searches/s
---
LOG
---
Log sequence number 6922735
Log flushed up to   6922339
Pages flushed up to 6922028
Last checkpoint at  6921795
0 pending log flushes, 0 pending chkp writes
9036 log i/o's done, 4.44 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 80128
Buffer pool size   1003
Free buffers       740
Database pages     259
Old database pages 0
Modified db pages  19
Percent of dirty pages(LRU & free pages): 1.900
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 8392, created 386, written 19421
4.06 reads/s, 0.00 creates/s, 9.94 writes/s
Buffer pool hit rate 971 / 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[731]:cur[4], 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=6060, Main thread ID=7708, state: sleeping
Number of rows inserted 26, updated 5204, deleted 0, read 32282
0.00 inserts/s, 3.00 updates/s, 0.00 deletes/s, 35.39 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 3619
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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