Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variables | Buffer Pool | InnoDB Status ]

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2025-06-28 09:56:15 0x15dfe8 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 2 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 3590 srv_active, 0 srv_shutdown, 1481065 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 1447
OS WAIT ARRAY INFO: signal count 1411
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 106671
Purge done for trx's n:o < 106671 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284206717539584, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284206717538808, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284206717538032, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: wait Windows aio (insert buffer thread)
I/O thread 1 state: wait Windows aio (read thread)
I/O thread 2 state: wait Windows aio (read thread)
I/O thread 3 state: wait Windows aio (read thread)
I/O thread 4 state: wait Windows aio (read thread)
I/O thread 5 state: wait Windows aio (write thread)
I/O thread 6 state: wait Windows aio (write thread)
I/O thread 7 state: wait Windows aio (write thread)
I/O thread 8 state: wait Windows aio (write thread)
Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] ,
 ibuf aio reads:
Pending flushes (fsync) log: 0; buffer pool: 0
1658 OS file reads, 262542 OS file writes, 35808 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
0.00 hash searches/s, 1.00 non-hash searches/s
---
LOG
---
Log sequence number          147287485
Log buffer assigned up to    147287485
Log buffer completed up to   147287485
Log written up to            147287485
Log flushed up to            147287485
Added dirty pages up to      147287485
Pages flushed up to          147287485
Last checkpoint at           147287485
Log minimum file id is       42
Log maximum file id is       44
33692 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 0
Dictionary memory allocated 605918
Buffer pool size   8191
Free buffers       6208
Database pages     1983
Old database pages 712
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 99398, not young 197558
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1635, created 170801, written 144697
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: 1983, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=9976, Main thread ID=11984 , state=sleeping
Number of rows inserted 15402085, updated 0, deleted 0, read 15090904
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
Number of system rows inserted 8, updated 20379, deleted 8, read 102568575
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.50 reads/s
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END OF INNODB MONITOR OUTPUT
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