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 20:01:45 0x6a2c INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 19 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 15817 srv_active, 0 srv_shutdown, 15403 srv_idle
srv_master_thread log flush and writes: 31220
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SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 13655
OS WAIT ARRAY INFO: signal count 12972
RW-shared spins 4508, rounds 132968, OS waits 4413
RW-excl spins 1377, rounds 31530, OS waits 977
RW-sx spins 16, rounds 416, OS waits 12
Spin rounds per wait: 29.50 RW-shared, 22.90 RW-excl, 26.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 72878
Purge done for trx's n:o < 72878 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284636351062952, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351058784, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351054616, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---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
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351037944, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284636351033776, not started
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)
--------
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
74005 OS file reads, 176679 OS file writes, 98223 OS fsyncs
2.84 reads/s, 16384 avg bytes/read, 9.00 writes/s, 5.26 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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
10.32 hash searches/s, 29.79 non-hash searches/s
---
LOG
---
Log sequence number 52364932
Log flushed up to   52364932
Pages flushed up to 52364932
Last checkpoint at  52361258
0 pending log flushes, 0 pending chkp writes
51622 log i/o's done, 2.84 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 959032
Buffer pool size   1003
Free buffers       739
Database pages     256
Old database pages 0
Modified db pages  0
Percent of dirty pages(LRU & free pages): 0.000
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 711, not young 8629
0.00 youngs/s, 0.00 non-youngs/s
Pages read 73613, created 1509, written 107355
2.84 reads/s, 0.05 creates/s, 5.10 writes/s
Buffer pool hit rate 976 / 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[470]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=3932, Main thread ID=18616, state: sleeping
Number of rows inserted 130, updated 26803, deleted 29, read 866550
0.00 inserts/s, 1.74 updates/s, 0.00 deletes/s, 126.78 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 238309
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
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