Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variablat | Pellgu zbutës | Statusi InnoDB ]

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2026-05-24 02:56:35 133705558382272 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 33 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 1415 srv_active, 0 srv_shutdown, 670304 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 16477
OS WAIT ARRAY INFO: signal count 14540
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 15183
Purge done for trx's n:o < 15183 undo n:o < 0 state: running but idle
History list length 15
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 415180546641920, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 415180546641112, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 415180546640304, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 415180546639496, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (read thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (write thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] ,
 ibuf aio reads:
Pending flushes (fsync) log: 0; buffer pool: 0
1004 OS file reads, 41063 OS file writes, 29947 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 3.04 writes/s, 2.43 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 34679, node heap has 8 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
128.75 hash searches/s, 75.30 non-hash searches/s
---
LOG
---
Log capacity                 104857600
Log capacity used            104857600
Log sequence number          25979409
Log buffer assigned up to    25979409
Log buffer completed up to   25979409
Log written up to            25979409
Log flushed up to            25979409
Added dirty pages up to      25979409
Pages flushed up to          25974935
Last checkpoint at           25974935
Log minimum file id is       5
Log maximum file id is       7
20771 log i/o's done, 1.27 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 0
Dictionary memory allocated 1082220
Buffer pool size   8191
Free buffers       6473
Database pages     1695
Old database pages 605
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 2092, not young 802
0.18 youngs/s, 0.00 non-youngs/s
Pages read 977, created 1267, written 14842
0.00 reads/s, 0.09 creates/s, 1.32 writes/s
Buffer pool hit rate 1000 / 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: 1695, unzip_LRU len: 0
I/O sum[40]:cur[8], 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=22495, Main thread ID=133705026766528 , state=sleeping
Number of rows inserted 52365, updated 1399, deleted 1864, read 59781
0.15 inserts/s, 0.30 updates/s, 0.00 deletes/s, 2.09 reads/s
Number of system rows inserted 1163, updated 1702, deleted 9, read 6010869
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 192.21 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
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