Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variables | Buffer Pool | InnoDB Status ]

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2025-09-17 02:24:31 0x11cc INNODB MONITOR OUTPUT
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Per second averages calculated from the last 43 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 724 srv_active, 0 srv_shutdown, 145984 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 5386
OS WAIT ARRAY INFO: signal count 5350
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
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TRANSACTIONS
------------
Trx id counter 17312
Purge done for trx's n:o < 17263 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284214165114560, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284214165115336, not started
mysql tables in use 1, locked 0
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284214165118440, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284214165113784, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284214165113008, 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
1728 OS file reads, 2706 OS file writes, 974 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.16 writes/s, 0.14 fsyncs/s
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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 7 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
288.16 hash searches/s, 283.88 non-hash searches/s
---
LOG
---
Log sequence number          21716137
Log buffer assigned up to    21716137
Log buffer completed up to   21716137
Log written up to            21716137
Log flushed up to            21716137
Added dirty pages up to      21716137
Pages flushed up to          21716097
Last checkpoint at           21716097
Log minimum file id is       6
Log maximum file id is       6
410 log i/o's done, 0.09 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 0
Dictionary memory allocated 605918
Buffer pool size   8191
Free buffers       6841
Database pages     1330
Old database pages 507
Modified db pages  1
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1372, not young 2907
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1175, created 1289, written 1243
0.00 reads/s, 0.00 creates/s, 0.02 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: 1330, unzip_LRU len: 0
I/O sum[1]: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=5288, Main thread ID=8728 , state=sleeping
Number of rows inserted 93160, updated 0, deleted 0, read 75948
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.16 reads/s
Number of system rows inserted 8, updated 497, deleted 8, read 804699
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 332.85 reads/s
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END OF INNODB MONITOR OUTPUT
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