Console
Storage engines
InnoDB
Percona-XtraDB, Supports transactions, row-level locking, foreign keys and encryption for tables
[ Variables | Buffer Pool | InnoDB Status ]
=====================================
2025-01-13 22:16:27 2d74 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 3 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 1536 srv_active, 0 srv_shutdown, 40441 srv_idle
srv_master_thread log flush and writes: 41977
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 2675
OS WAIT ARRAY INFO: signal count 2675
Mutex spin waits 8368, rounds 49395, OS waits 1346
RW-shared spins 1355, rounds 40584, OS waits 1329
RW-excl spins 0, rounds 0, OS waits 0
Spin rounds per wait: 5.90 mutex, 29.95 RW-shared, 0.00 RW-excl
------------
TRANSACTIONS
------------
Trx id counter 469299
Purge done for trx's n:o < 469297 undo n:o < 0 state: running but idle
History list length 20
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 0, not started
MySQL thread id 4591, OS thread handle 0x2d74, query id 91591 localhost 127.0.0.1 root init
SHOW ENGINE INNODB STATUS
---TRANSACTION 469298, not started
MySQL thread id 4590, OS thread handle 0x2d74, query id 91583 localhost 127.0.0.1 pma
---TRANSACTION 444419, not started
MySQL thread id 1, OS thread handle 0xd18, query id 0 Reading from net
--------
FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (write thread)
Pending normal aio reads: 0 [0, 0, 0, 0] , aio writes: 0 [0, 0, 0, 0] ,
ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0
Pending flushes (fsync) log: 0; buffer pool: 0
3528 OS file reads, 12903 OS file writes, 7237 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.33 writes/s, 0.33 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
0.67 hash searches/s, 0.00 non-hash searches/s
---
LOG
---
Log sequence number 45488809
Log flushed up to 45488809
Pages flushed up to 45488809
Last checkpoint at 45488809
Max checkpoint age 7782360
Checkpoint age target 7539162
Modified age 0
Checkpoint age 0
0 pending log writes, 0 pending chkp writes
3123 log i/o's done, 0.33 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total memory allocated 17481728; in additional pool allocated 0
Total memory allocated by read views 584
Internal hash tables (constant factor + variable factor)
Adaptive hash index 297776 (277192 + 20584)
Page hash 18136 (buffer pool 0 only)
Dictionary cache 166640 (70736 + 95904)
File system 835552 (812272 + 23280)
Lock system 43456 (42376 + 1080)
Recovery system 0 (0 + 0)
Dictionary memory allocated 95904
Buffer pool size 1023
Buffer pool size, bytes 16760832
Free buffers 766
Database pages 256
Old database pages 0
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 3489, created 92, written 8346
0.00 reads/s, 0.00 creates/s, 0.00 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: 256, unzip_LRU len: 0
I/O sum[21]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
0 RW transactions active inside InnoDB
0 RO transactions active inside InnoDB
0 out of 1000 descriptors used
Main thread id 17872, state: sleeping
Number of rows inserted 0, updated 1701, deleted 0, read 25172
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.67 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 4
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================