Storage engines

InnoDB

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

[ Variables | Buffer Pool | InnoDB Status ]

=====================================
2026-03-28 12:40:28 0x7fb6bc0a96c0 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 38 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 5 srv_active, 0 srv_shutdown, 32573 srv_idle
srv_master_thread log flush and writes: 32576
----------
SEMAPHORES
----------
------------
TRANSACTIONS
------------
Trx id counter 42094
Purge done for trx's n:o < 42092 undo n:o < 0 state: running
History list length 1
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION (0x7fb6e055ae80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e055a380), not started
mysql tables in use 1, locked 1
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0559880), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0558d80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0558280), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0557780), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0556c80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0556180), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0555680), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0554b80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0554080), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0553580), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0552a80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0551f80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0551480), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0550980), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e054fe80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e054f380), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e054e880), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e054dd80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e054d280), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e054c780), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e054b180), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e054bc80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e054a680), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0549b80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0549080), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0548580), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0547a80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0546f80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0546480), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0545980), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0544e80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0544380), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0543880), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0542d80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0542280), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0541780), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0540c80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e0540180), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e053f680), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fb6e053eb80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
Pending flushes (fsync): 0
730 OS file reads, 0 OS file writes, 22419 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 1.13 fsyncs/s
---
LOG
---
Log sequence number 41755276
Log flushed up to   41753890
Pages flushed up to 8893014
Last checkpoint at  8892998
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 167772160
Dictionary memory allocated 1100760
Buffer pool size   8112
Free buffers       6113
Database pages     1999
Old database pages 717
Modified db pages  1402
Percent of dirty pages(LRU & free pages): 17.281
Max dirty pages percent: 90.000
Pending reads 0
Pending writes: LRU 0, flush list 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 650, created 1349, written 0
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: 1999, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 read views open inside InnoDB
state: sleeping
----------------------------
END OF INNODB MONITOR OUTPUT
============================