Motores de almacenamiento
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
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Variables
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Reserva de búfers
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Estado del InnoDB
]
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2026-08-25 14:55:21 0x1524 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 17 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 176 srv_active, 0 srv_shutdown, 3109 srv_idle
srv_master_thread log flush and writes: 3285
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 8472
OS WAIT ARRAY INFO: signal count 773
RW-shared spins 137, rounds 4052, OS waits 134
RW-excl spins 8, rounds 212, OS waits 6
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 29.58 RW-shared, 26.50 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 6391
Purge done for trx's n:o < 6391 undo n:o < 0 state: running but idle
History list length 1
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284002977095896, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284002977091728, 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
1563 OS file reads, 3654 OS file writes, 1656 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 2.18 writes/s, 1.06 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 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 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)
1.88 hash searches/s, 3.82 non-hash searches/s
---
LOG
---
Log sequence number 4087721
Log flushed up to 4087721
Pages flushed up to 4087721
Last checkpoint at 4086145
0 pending log flushes, 0 pending chkp writes
1107 log i/o's done, 0.59 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 132712
Buffer pool size 1003
Free buffers 745
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 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1507, created 158, written 2326
0.00 reads/s, 0.00 creates/s, 1.41 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: 256, unzip_LRU len: 0
I/O sum[32]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=3632, Main thread ID=7348, state: sleeping
Number of rows inserted 0, updated 662, deleted 0, read 4229
0.00 inserts/s, 0.06 updates/s, 0.00 deletes/s, 1.82 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 0
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
============================
