Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Променливи | Buffer Pool | InnoDB Състояние ]

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2025-07-06 23:09:33 0x7f9306277700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 37 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 18 srv_active, 0 srv_shutdown, 506 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 34
OS WAIT ARRAY INFO: signal count 36
RW-shared spins 4, rounds 5, OS waits 1
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.25 RW-shared, 0.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9840
Purge done for trx's n:o < 9840 undo n:o < 0 state: running but idle
History list length 85
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421744998714832, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421744998713960, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421744998713088, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (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
1371 OS file reads, 781 OS file writes, 175 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.49 writes/s, 0.32 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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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 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 2 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
379.18 hash searches/s, 229.62 non-hash searches/s
---
LOG
---
Log sequence number          50964611
Log buffer assigned up to    50964611
Log buffer completed up to   50964611
Log written up to            50964611
Log flushed up to            50964611
Added dirty pages up to      50964611
Pages flushed up to          50964611
Last checkpoint at           50964611
114 log i/o's done, 0.08 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 571924
Buffer pool size   8192
Free buffers       6782
Database pages     1391
Old database pages 519
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 143, not young 1647
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1248, created 410, written 481
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: 1391, unzip_LRU len: 0
I/O sum[13]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=361, Main thread ID=140269515368192 , state=sleeping
Number of rows inserted 49204, updated 352, deleted 0, read 9856838
0.00 inserts/s, 0.03 updates/s, 0.00 deletes/s, 571.36 reads/s
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END OF INNODB MONITOR OUTPUT
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