Motores de almacenamiento

InnoDB

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

[ Variables | Reserva de búfers | Estado del InnoDB ]

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2026-10-10 02:12:03 0x79a4a37ff6c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 3 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 6773 srv_active, 0 srv_shutdown, 14601 srv_idle
srv_master_thread log flush and writes: 21374
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 274734
--Thread 133747970811584 has waited at row0ins.cc line 2697 for 1.00 seconds the semaphore:
X-lock on RW-latch at 0x79a48f015868 created in file buf0buf.cc line 1390
a writer (thread id 0) has reserved it in mode  SX
number of readers 0, waiters flag 1, lock_word: 10000000
Last time write locked in file buf0flu.cc line 1140
OS WAIT ARRAY INFO: signal count 71911
RW-shared spins 2530, rounds 75302, OS waits 2447
RW-excl spins 3029, rounds 90819, OS waits 2975
RW-sx spins 29, rounds 757, OS waits 23
Spin rounds per wait: 29.76 RW-shared, 29.98 RW-excl, 26.10 RW-sx
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TRANSACTIONS
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Trx id counter 33136
Purge done for trx's n:o < 33135 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 415222949687680, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 415222949683464, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 33135, ACTIVE 1 sec inserting
mysql tables in use 1, locked 1
1 lock struct(s), heap size 1128, 0 row lock(s)
MySQL thread id 23237, OS thread handle 133747970811584, query id 1237584 localhost pma Update
REPLACE INTO `phpmyadmin`.`pma__table_uiprefs` (username, db_name, table_name, prefs) VALUES ('root', 'information_schema', 'CHARACTER_SETS', '{\"sorted_col\":\"`CHARACTER_SETS`.`DEFAULT_COLLATE_NAME` DESC\"}')
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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: 1
18026 OS file reads, 64485 OS file writes, 37345 OS fsyncs
1.00 reads/s, 16384 avg bytes/read, 2.33 writes/s, 2.33 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 1 merges
merged operations:
 insert 0, delete mark 1, 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 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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
5.33 hash searches/s, 9.66 non-hash searches/s
---
LOG
---
Log sequence number 26418473
Log flushed up to   26418473
Pages flushed up to 26396007
Last checkpoint at  26395875
0 pending log flushes, 0 pending chkp writes
18690 log i/o's done, 1.33 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 112240
Buffer pool size   1003
Free buffers       742
Database pages     256
Old database pages 0
Modified db pages  49
Percent of dirty pages(LRU & free pages): 4.905
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 49, single page 0
Pages made young 9, not young 11
0.00 youngs/s, 0.00 non-youngs/s
Pages read 17977, created 455, written 38464
1.00 reads/s, 0.00 creates/s, 0.67 writes/s
Buffer pool hit rate 971 / 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[128]:cur[42], 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=38622, Main thread ID=133746908960448, state: sleeping
Number of rows inserted 80, updated 9665, deleted 10, read 2110747
0.00 inserts/s, 1.00 updates/s, 0.00 deletes/s, 28.32 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 17444
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
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