Storage engines

InnoDB

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

[ Premenné | Vyrovnávacia Pamäť | Stav InnoDB ]

=====================================
2026-01-30 06:48:08 0x7f424ea06700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 48 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 10372 srv_active, 0 srv_shutdown, 13867 srv_idle
srv_master_thread log flush and writes: 24238
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 34571
OS WAIT ARRAY INFO: signal count 27260
RW-shared spins 0, rounds 15838, OS waits 7885
RW-excl spins 0, rounds 3670, OS waits 127
RW-sx spins 2, rounds 60, OS waits 2
Spin rounds per wait: 15838.00 RW-shared, 3670.00 RW-excl, 30.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 75039
Purge done for trx's n:o < 75039 undo n:o < 0 state: running but idle
History list length 4
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421397967467000, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421397967462744, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421397967458488, 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, 134254 OS file writes, 71257 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 4.25 writes/s, 2.44 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 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 26 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
2.04 hash searches/s, 0.44 non-hash searches/s
---
LOG
---
Log sequence number 33339263
Log flushed up to   33339263
Pages flushed up to 33339263
Last checkpoint at  33339254
0 pending log flushes, 0 pending chkp writes
44819 log i/o's done, 1.50 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 130928
Buffer pool size   16024
Free buffers       15100
Database pages     856
Old database pages 333
Modified db pages  0
Percent of dirty pages(LRU & free pages): 0.000
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 152, written 80435
0.00 reads/s, 0.00 creates/s, 2.44 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: 856, 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=901, Main thread ID=139922216302336, state: sleeping
Number of rows inserted 1, updated 18362, deleted 0, read 1434606
0.00 inserts/s, 0.52 updates/s, 0.00 deletes/s, 1.31 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 7495
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================