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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2026-10-12 23:35:58 0x30b8 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 28 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 7922 srv_active, 0 srv_shutdown, 13618 srv_idle
srv_master_thread log flush and writes: 21540
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 61280
OS WAIT ARRAY INFO: signal count 12124
RW-shared spins 2231, rounds 66081, OS waits 2126
RW-excl spins 50, rounds 1085, OS waits 33
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 29.62 RW-shared, 21.70 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 506240
Purge done for trx's n:o < 506240 undo n:o < 0 state: running
History list length 10
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283536150729208, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283536150720872, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283536150716704, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283536150725040, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283536150712536, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283536150708368, 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
43343 OS file reads, 88250 OS file writes, 49833 OS fsyncs
5.43 reads/s, 16384 avg bytes/read, 8.50 writes/s, 5.14 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 35, seg size 37, 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)
15.71 hash searches/s, 36.71 non-hash searches/s
---
LOG
---
Log sequence number 127754480
Log flushed up to 127754460
Pages flushed up to 127724159
Last checkpoint at 127722851
0 pending log flushes, 0 pending chkp writes
25409 log i/o's done, 3.50 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 157752
Buffer pool size 1003
Free buffers 738
Database pages 257
Old database pages 0
Modified db pages 54
Percent of dirty pages(LRU & free pages): 5.422
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 560, not young 14748
0.00 youngs/s, 0.00 non-youngs/s
Pages read 43277, created 744, written 53974
5.43 reads/s, 0.11 creates/s, 4.18 writes/s
Buffer pool hit rate 963 / 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[612]:cur[2], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=4332, Main thread ID=5520, state: sleeping
Number of rows inserted 1, updated 12913, deleted 0, read 7666600
0.00 inserts/s, 2.50 updates/s, 0.00 deletes/s, 99.18 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 27122
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
