Storage engines

InnoDB

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

[ විචල්‍යනයන් | අන්තරාච එකතුව | InnoDB තත්වය ]

=====================================
2025-12-19 14:37:34 0x7f7070490700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 54 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 3325 srv_active, 0 srv_shutdown, 5955 srv_idle
srv_master_thread log flush and writes: 9280
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 11420
OS WAIT ARRAY INFO: signal count 9376
RW-shared spins 0, rounds 5683, OS waits 2824
RW-excl spins 0, rounds 912, OS waits 30
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 5683.00 RW-shared, 912.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 49972
Purge done for trx's n:o < 49972 undo n:o < 0 state: running but idle
History list length 22
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421595895534072, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421595895529816, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421595895525560, 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
863 OS file reads, 43801 OS file writes, 23534 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 3.72 writes/s, 2.30 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 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)
1.65 hash searches/s, 0.22 non-hash searches/s
---
LOG
---
Log sequence number 17373108
Log flushed up to   17372987
Pages flushed up to 17372615
Last checkpoint at  17372572
0 pending log flushes, 0 pending chkp writes
15163 log i/o's done, 1.48 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 128256
Buffer pool size   16024
Free buffers       15108
Database pages     850
Old database pages 328
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 704, created 146, written 25703
0.00 reads/s, 0.00 creates/s, 1.96 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: 850, unzip_LRU len: 0
I/O sum[0]:cur[5], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=900, Main thread ID=140120145520384, state: sleeping
Number of rows inserted 1, updated 6115, deleted 0, read 1260984
0.00 inserts/s, 0.43 updates/s, 0.00 deletes/s, 0.91 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2104
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================