Motores de almacenamiento

InnoDB

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

[ Variables | Reserva de búfers | Estado del InnoDB ]

=====================================
2026-08-24 20:33:33 0x3744 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 18 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 8481 srv_active, 0 srv_shutdown, 25527 srv_idle
srv_master_thread log flush and writes: 34008
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 77489
OS WAIT ARRAY INFO: signal count 16250
RW-shared spins 3166, rounds 91743, OS waits 2899
RW-excl spins 427, rounds 4254, OS waits 99
RW-sx spins 1, rounds 30, OS waits 0
Spin rounds per wait: 28.98 RW-shared, 9.96 RW-excl, 30.00 RW-sx
------------------------
LATEST FOREIGN KEY ERROR
------------------------
2026-08-24 15:27:26 0x36a0 Error in foreign key constraint creation for table `restobar_db`.`#sql-11c0_ad`.
A foreign key constraint of name `restobar_db`.`fk_orders_client`
already exists. (Note that internally InnoDB adds 'databasename'
in front of the user-defined constraint name.)
Note that InnoDB's FOREIGN KEY system tables store
constraint names as case-insensitive, with the
MySQL standard latin1_swedish_ci collation. If you
create tables or databases whose names differ only in
the character case, then collisions in constraint
names can occur. Workaround: name your constraints
explicitly with unique names.
------------
TRANSACTIONS
------------
Trx id counter 152880
Purge done for trx's n:o < 152880 undo n:o < 0 state: running
History list length 10
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284283541992360, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541988192, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541984024, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541979856, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541975688, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541971520, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541967352, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541963184, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541959016, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541954848, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541950680, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284283541946512, 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
30763 OS file reads, 98674 OS file writes, 56224 OS fsyncs
0.72 reads/s, 16384 avg bytes/read, 2.06 writes/s, 1.17 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 175 merges
merged operations:
 insert 163, delete mark 14, 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 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)
Hash table size 4441, node heap has 1 buffer(s)
5.61 hash searches/s, 11.94 non-hash searches/s
---
LOG
---
Log sequence number 42492779
Log flushed up to   42492779
Pages flushed up to 42492779
Last checkpoint at  42492770
0 pending log flushes, 0 pending chkp writes
28113 log i/o's done, 0.83 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 150240
Buffer pool size   1003
Free buffers       738
Database pages     258
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 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 30706, created 723, written 60667
0.72 reads/s, 0.00 creates/s, 1.11 writes/s
Buffer pool hit rate 974 / 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: 258, unzip_LRU len: 0
I/O sum[109]: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=3952, Main thread ID=5360, state: sleeping
Number of rows inserted 445, updated 13261, deleted 16, read 2647538
0.00 inserts/s, 0.50 updates/s, 0.00 deletes/s, 5.67 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 25775
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================