Storage engines

InnoDB

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

[ Variables | Buffer Pool | InnoDB Status ]

=====================================
2026-11-03 15:32:58 0x15bc INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 46 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 68079 srv_active, 0 srv_shutdown, 5344205 srv_idle
srv_master_thread log flush and writes: 5412284
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 42097
OS WAIT ARRAY INFO: signal count 39334
RW-shared spins 31744, rounds 920337, OS waits 30265
RW-excl spins 5326, rounds 16654, OS waits 178
RW-sx spins 67, rounds 1998, OS waits 65
Spin rounds per wait: 28.99 RW-shared, 3.13 RW-excl, 29.82 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 593001
Purge done for trx's n:o < 593001 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 281493927267712, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927326064, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927296888, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927351072, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927346904, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927342736, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927338568, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927321896, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927313560, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927301056, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927309392, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927163512, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927159344, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927292720, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927288552, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927284384, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927280216, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927276048, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927271880, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927263544, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927259376, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927255208, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927251040, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927246872, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927242704, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927238536, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927234368, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927230200, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927226032, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927221864, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927217696, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927213528, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927209360, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927205192, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927201024, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927196856, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927192688, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927188520, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927184352, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927180184, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927176016, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927171848, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927167680, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927155176, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927151008, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927146840, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927142672, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927138504, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927134336, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927105160, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927096824, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927092656, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927084320, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927130168, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927126000, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927121832, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927117664, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927113496, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927109328, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927080152, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927075984, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927100992, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281493927088488, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
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] , 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
207617 OS file reads, 178282 OS file writes, 115439 OS fsyncs
25.50 reads/s, 16384 avg bytes/read, 0.13 writes/s, 0.11 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 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
0.00 hash searches/s, 0.00 non-hash searches/s
---
LOG
---
Log sequence number 1048186072
Log flushed up to   1048186072
Pages flushed up to 1048186072
Last checkpoint at  1048186063
0 pending log flushes, 0 pending chkp writes
76201 log i/o's done, 0.07 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 378104
Buffer pool size   1003
Free buffers       0
Database pages     995
Old database pages 384
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 4214, not young 1717101
1.15 youngs/s, 1046.50 non-youngs/s
Pages read 207464, created 642, written 88779
25.50 reads/s, 0.00 creates/s, 0.04 writes/s
Buffer pool hit rate 976 / 1000, young-making rate 1 / 1000 not 964 / 1000
Pages read ahead 0.00/s, evicted without access 1.22/s, Random read ahead 0.00/s
LRU len: 995, unzip_LRU len: 0
I/O sum[1175]: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=7704, Main thread ID=868, state: sleeping
Number of rows inserted 61534, updated 380, deleted 9, read 290865825
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 9243.73 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 41759
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================