Speicher-Engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[
Variablen
|
Puffer-Pool
|
InnoDB-Status
]
=====================================
2026-05-26 20:00:21 0x4934 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 20 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 15747 srv_active, 0 srv_shutdown, 15398 srv_idle
srv_master_thread log flush and writes: 31145
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 13595
OS WAIT ARRAY INFO: signal count 12928
RW-shared spins 4496, rounds 132608, OS waits 4401
RW-excl spins 1373, rounds 31410, OS waits 973
RW-sx spins 16, rounds 416, OS waits 12
Spin rounds per wait: 29.49 RW-shared, 22.88 RW-excl, 26.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 72600
Purge done for trx's n:o < 72600 undo n:o < 0 state: running but idle
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---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
73778 OS file reads, 175868 OS file writes, 97774 OS fsyncs
2.15 reads/s, 16384 avg bytes/read, 9.60 writes/s, 5.40 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)
7.80 hash searches/s, 21.00 non-hash searches/s
---
LOG
---
Log sequence number 52266020
Log flushed up to 52266000
Pages flushed up to 52264703
Last checkpoint at 52258519
0 pending log flushes, 0 pending chkp writes
51386 log i/o's done, 2.75 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 959032
Buffer pool size 1003
Free buffers 738
Database pages 257
Old database pages 0
Modified db pages 3
Percent of dirty pages(LRU & free pages): 0.301
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 73386, created 1507, written 106860
2.15 reads/s, 0.00 creates/s, 5.95 writes/s
Buffer pool hit rate 977 / 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: 257, unzip_LRU len: 0
I/O sum[310]:cur[26], 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 26665, deleted 29, read 856254
0.00 inserts/s, 1.40 updates/s, 0.00 deletes/s, 136.64 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 237567
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
