Storage engines

InnoDB

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

[ চলকসমূহ | বাফার পুল | InnoDB'র অবস্থা ]

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2025-06-28 14:50:51 0x7f6c84b49700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 61 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 614 srv_active, 0 srv_shutdown, 10411 srv_idle
srv_master_thread log flush and writes: 11023
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 1774
OS WAIT ARRAY INFO: signal count 1704
RW-shared spins 0, rounds 2032, OS waits 1016
RW-excl spins 0, rounds 60, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 2032.00 RW-shared, 60.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 38811
Purge done for trx's n:o < 38811 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421579053130392, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421579053126136, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421579053121880, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421579053117624, 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
855 OS file reads, 7274 OS file writes, 5052 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.52 writes/s, 0.48 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 8 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)
0.10 hash searches/s, 0.69 non-hash searches/s
---
LOG
---
Log sequence number 10140142
Log flushed up to   10139158
Pages flushed up to 10139158
Last checkpoint at  10139149
0 pending log flushes, 0 pending chkp writes
3342 log i/o's done, 0.33 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 128256
Buffer pool size   16024
Free buffers       15133
Database pages     827
Old database pages 325
Modified db pages  44
Percent of dirty pages(LRU & free pages): 0.276
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 696, created 131, written 3363
0.00 reads/s, 0.00 creates/s, 0.15 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: 827, 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=911, Main thread ID=140103301195520, state: sleeping
Number of rows inserted 1, updated 690, deleted 0, read 797319
0.00 inserts/s, 0.05 updates/s, 0.00 deletes/s, 0.08 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1782
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================