Pogoni skladiščenja

InnoDB

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

[ Spremenljivke | Zaloga medpomnilnika | Stanje InnoDB ]

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2026-02-06 08:11:25 0x7f2954096700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 40 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 23130 srv_active, 0 srv_shutdown, 6053 srv_idle
srv_master_thread log flush and writes: 29179
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 59868
OS WAIT ARRAY INFO: signal count 48789
RW-shared spins 0, rounds 15442, OS waits 7679
RW-excl spins 0, rounds 10604, OS waits 356
RW-sx spins 12, rounds 325, OS waits 10
Spin rounds per wait: 15442.00 RW-shared, 10604.00 RW-excl, 27.08 RW-sx
------------------------
LATEST FOREIGN KEY ERROR
------------------------
2026-02-06 06:55:13 0x7f2946a6a700 Error in foreign key constraint creation for table `Techhub_db`.`sale_items`.
A foreign key constraint of name `Techhub_db`.`sale_items_ibfk_1`
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 126215
Purge done for trx's n:o < 126215 undo n:o < 0 state: running
History list length 11
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421290459341304, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421290459337048, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421290459332792, 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
864 OS file reads, 296613 OS file writes, 150712 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 9.32 writes/s, 5.22 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 0 buffer(s)
Hash table size 69257, node heap has 9 buffer(s)
Hash table size 69257, node heap has 2 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 3 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
5.07 hash searches/s, 0.42 non-hash searches/s
---
LOG
---
Log sequence number 66110612
Log flushed up to   66110491
Pages flushed up to 66106718
Last checkpoint at  66106083
0 pending log flushes, 0 pending chkp writes
83336 log i/o's done, 2.65 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 160320
Buffer pool size   16024
Free buffers       14971
Database pages     988
Old database pages 344
Modified db pages  9
Percent of dirty pages(LRU & free pages): 0.056
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 705, created 283, written 188573
0.00 reads/s, 0.00 creates/s, 5.80 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: 988, unzip_LRU len: 0
I/O sum[0]: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=903, Main thread ID=139814707902208, state: sleeping
Number of rows inserted 15, updated 43634, deleted 1, read 1103748
0.00 inserts/s, 1.30 updates/s, 0.00 deletes/s, 2.75 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 3936
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================