Speicher-Engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[
Variablen
|
Puffer-Pool
|
InnoDB-Status
]
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2026-03-30 17:17:54 0x7c90347046c0 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 4 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 5019 srv_active, 0 srv_shutdown, 3515439 srv_idle
srv_master_thread log flush and writes: 3520375
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 1203
OS WAIT ARRAY INFO: signal count 1131
RW-shared spins 1202, rounds 34000, OS waits 1021
RW-excl spins 34, rounds 256, OS waits 5
RW-sx spins 1, rounds 1, OS waits 0
Spin rounds per wait: 28.29 RW-shared, 7.53 RW-excl, 1.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 29163
Purge done for trx's n:o < 29163 undo n:o < 0 state: running
History list length 8
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 418433775472904, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 418433775468688, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (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
9595 OS file reads, 67752 OS file writes, 35291 OS fsyncs
12.25 reads/s, 16384 avg bytes/read, 13.50 writes/s, 12.25 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 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 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
43.49 hash searches/s, 135.22 non-hash searches/s
---
LOG
---
Log sequence number 12575762
Log flushed up to 12575726
Pages flushed up to 12540637
Last checkpoint at 12536921
0 pending log flushes, 0 pending chkp writes
17545 log i/o's done, 9.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 80520
Buffer pool size 1003
Free buffers 743
Database pages 257
Old database pages 0
Modified db pages 69
Percent of dirty pages(LRU & free pages): 6.893
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 9558, created 408, written 43959
12.25 reads/s, 0.50 creates/s, 3.00 writes/s
Buffer pool hit rate 972 / 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[336]:cur[5], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=295, Main thread ID=136957732558528, state: sleeping
Number of rows inserted 56, updated 10099, deleted 0, read 207058
0.00 inserts/s, 8.00 updates/s, 0.00 deletes/s, 42.49 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 8865
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 64.73 reads/s
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END OF INNODB MONITOR OUTPUT
============================
