Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variables | Buffer Pool | InnoDB Status ]

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2025-07-27 07:52:39 0x9f6ac INNODB MONITOR OUTPUT
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Per second averages calculated from the last 31 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 132 srv_active, 0 srv_shutdown, 1530232 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 301
OS WAIT ARRAY INFO: signal count 291
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 152041
Purge done for trx's n:o < 152041 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284433613001984, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284433613005864, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284433613005088, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284433613001208, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284433613000432, 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
1164 OS file reads, 4776 OS file writes, 1576 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 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, 468.92 non-hash searches/s
---
LOG
---
Log sequence number          155028090
Log buffer assigned up to    155028090
Log buffer completed up to   155028090
Log written up to            155028090
Log flushed up to            155028090
Added dirty pages up to      155028090
Pages flushed up to          155028090
Last checkpoint at           155028090
Log minimum file id is       47
Log maximum file id is       47
949 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 0
Dictionary memory allocated 594867
Buffer pool size   8191
Free buffers       6816
Database pages     1375
Old database pages 488
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1957, not young 165
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1141, created 1258, written 2875
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: 1375, 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=9680, Main thread ID=12712 , state=sleeping
Number of rows inserted 98964, updated 0, deleted 0, read 99311
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
Number of system rows inserted 8, updated 824, deleted 8, read 2966685
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 332.02 reads/s
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END OF INNODB MONITOR OUTPUT
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