Silniki pamięci masowej

InnoDB

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

[ Zmienne | Rezerwy buforowe | Status InnoDB ]

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2025-12-20 20:14:55 0x7fce5c0e1700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 39 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 7214 srv_active, 0 srv_shutdown, 8756 srv_idle
srv_master_thread log flush and writes: 15966
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 22573
OS WAIT ARRAY INFO: signal count 20238
RW-shared spins 0, rounds 10624, OS waits 5257
RW-excl spins 0, rounds 2868, OS waits 101
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 10624.00 RW-shared, 2868.00 RW-excl, 0.00 RW-sx
------------------------
LATEST FOREIGN KEY ERROR
------------------------
2025-12-20 17:11:26 0x7fce4df7b700 Error in foreign key constraint of table `STUDYHELPER`.`Study_Sessions`:
Create  table `STUDYHELPER`.`Study_Sessions` with foreign key constraint failed. Referenced table `STUDYHELPER`.`Users` not found in the data dictionary near 'FOREIGN KEY (user_id) REFERENCES Users(user_id),
    FOREIGN KEY (subject_id) REFERENCES Subjects(subject_id)
)'.
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TRANSACTIONS
------------
Trx id counter 70659
Purge done for trx's n:o < 70659 undo n:o < 0 state: running but idle
History list length 11
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421999046296056, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421999046291800, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421999046287544, 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, 107526 OS file writes, 53151 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 3.69 writes/s, 1.79 fsyncs/s
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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 10 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)
1.67 hash searches/s, 0.21 non-hash searches/s
---
LOG
---
Log sequence number 30798762
Log flushed up to   30798762
Pages flushed up to 30796355
Last checkpoint at  30796346
0 pending log flushes, 0 pending chkp writes
33939 log i/o's done, 1.21 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 141616
Buffer pool size   16024
Free buffers       15076
Database pages     881
Old database pages 338
Modified db pages  5
Percent of dirty pages(LRU & free pages): 0.031
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 176, written 66441
0.00 reads/s, 0.00 creates/s, 2.28 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: 881, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=904, Main thread ID=140523570407168, state: sleeping
Number of rows inserted 9, updated 15989, deleted 1, read 2390998
0.00 inserts/s, 0.44 updates/s, 0.00 deletes/s, 0.85 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 5424
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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