Úložiště

InnoDB

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

[ Proměnné | Vyrovnávací paměť | Stav InnoDB ]

=====================================
2025-07-03 23:01:59 0x7fb2c81e0700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 59 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 3231 srv_active, 0 srv_shutdown, 23687 srv_idle
srv_master_thread log flush and writes: 26917
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 17945
OS WAIT ARRAY INFO: signal count 12261
RW-shared spins 0, rounds 10922, OS waits 5410
RW-excl spins 0, rounds 1127, OS waits 30
RW-sx spins 9, rounds 31, OS waits 0
Spin rounds per wait: 10922.00 RW-shared, 1127.00 RW-excl, 3.44 RW-sx
------------------------
LATEST FOREIGN KEY ERROR
------------------------
2025-07-03 20:05:47 0x7fb2c8212700 Error in foreign key constraint of table `ecole`.`agenda_sessions`:
 FOREIGN KEY (`agenda_id`) REFERENCES `event_agenda` (`id`) ON DELETE CASCADE:
Cannot find an index in the referenced table where the
referenced columns appear as the first columns, or column types
in the table and the referenced table do not match for constraint.
Note that the internal storage type of ENUM and SET changed in
tables created with >= InnoDB-4.1.12, and such columns in old tables
cannot be referenced by such columns in new tables.
Please refer to https://mariadb.com/kb/en/library/foreign-keys/ for correct foreign key definition.
Alter  table `ecole`.`agenda_sessions` with foreign key constraint failed. There is no index in the referenced table where the referenced columns appear as the first columns near ' FOREIGN KEY (`agenda_id`) REFERENCES `event_agenda` (`id`) ON DELETE CASCADE'.
------------
TRANSACTIONS
------------
Trx id counter 46117
Purge done for trx's n:o < 46117 undo n:o < 0 state: running but idle
History list length 12
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421880837362168, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421880837357912, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421880837353656, not started
0 lock struct(s), heap size 1136, 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 (log 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 (read 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)
I/O thread 9 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:, log i/o's:, sync i/o's:
Pending flushes (fsync) log: 0; buffer pool: 0
889 OS file reads, 40545 OS file writes, 26619 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 2.22 writes/s, 1.15 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 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
0.59 hash searches/s, 0.93 non-hash searches/s
---
LOG
---
Log sequence number 15184290
Log flushed up to   15184169
Pages flushed up to 15182741
Last checkpoint at  15182732
0 pending log flushes, 0 pending chkp writes
17368 log i/o's done, 0.78 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 235136
Buffer pool size   16024
Free buffers       14819
Database pages     1197
Old database pages 422
Modified db pages  3
Percent of dirty pages(LRU & free pages): 0.019
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 730, created 467, written 20085
0.00 reads/s, 0.00 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: 1197, unzip_LRU len: 0
I/O sum[0]: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=907, Main thread ID=140405089756928, state: sleeping
Number of rows inserted 461, updated 3688, deleted 40, read 1923549
0.00 inserts/s, 0.25 updates/s, 0.00 deletes/s, 0.56 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 4153
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================