Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Променливи | Buffer Pool | InnoDB Състояние ]

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2026-03-22 00:07:34 0x7f1e840a7700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 20 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 35 srv_active, 0 srv_shutdown, 289 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 146
OS WAIT ARRAY INFO: signal count 143
RW-shared spins 14, rounds 26, OS waits 12
RW-excl spins 7, rounds 210, OS waits 7
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.86 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10210
Purge done for trx's n:o < 10209 undo n:o < 0 state: running but idle
History list length 34
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421244202343016, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421244202342144, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
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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
1286 OS file reads, 2013 OS file writes, 751 OS fsyncs
0.20 reads/s, 12544 avg bytes/read, 1.70 writes/s, 1.05 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 0 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 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
2872.06 hash searches/s, 2240.94 non-hash searches/s
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LOG
---
Log sequence number          51538582
Log buffer assigned up to    51538582
Log buffer completed up to   51538582
Log written up to            51538582
Log flushed up to            51538582
Added dirty pages up to      51538582
Pages flushed up to          51538572
Last checkpoint at           51538572
844 log i/o's done, 0.70 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 137363456
Dictionary memory allocated 681377
Buffer pool size   8192
Free buffers       6780
Database pages     1396
Old database pages 496
Modified db pages  1
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 531, not young 89
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1159, created 331, written 979
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: 1396, unzip_LRU len: 0
I/O sum[33]:cur[2], 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=366, Main thread ID=139768718374656 , state=sleeping
Number of rows inserted 33287, updated 870, deleted 234, read 886838
0.25 inserts/s, 0.10 updates/s, 0.00 deletes/s, 3557.67 reads/s
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END OF INNODB MONITOR OUTPUT
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