Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Променливи | Buffer Pool | InnoDB Състояние ]

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2026-03-23 14:26:45 0x7f2314110700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 48 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 91 srv_active, 0 srv_shutdown, 565 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 156
OS WAIT ARRAY INFO: signal count 158
RW-shared spins 4, rounds 4, OS waits 0
RW-excl spins 12, rounds 40, OS waits 1
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 3.33 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10130
Purge done for trx's n:o < 10129 undo n:o < 0 state: running but idle
History list length 18
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421263671548520, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421263671547648, 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
1646 OS file reads, 2609 OS file writes, 721 OS fsyncs
0.19 reads/s, 12970 avg bytes/read, 3.58 writes/s, 0.73 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 8 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 25 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 32 buffer(s)
2488.49 hash searches/s, 1829.07 non-hash searches/s
---
LOG
---
Log sequence number          51030917
Log buffer assigned up to    51030917
Log buffer completed up to   51030917
Log written up to            51030917
Log flushed up to            51030917
Added dirty pages up to      51030917
Pages flushed up to          51030917
Last checkpoint at           51030917
425 log i/o's done, 0.27 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 831191
Buffer pool size   8192
Free buffers       6518
Database pages     1599
Old database pages 608
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 611, not young 157123
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1449, created 1707, written 1257
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: 1599, unzip_LRU len: 0
I/O sum[26]: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=367, Main thread ID=139788185446144 , state=sleeping
Number of rows inserted 420299, updated 460, deleted 0, read 2772290
1707.01 inserts/s, 0.08 updates/s, 0.00 deletes/s, 4475.41 reads/s
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END OF INNODB MONITOR OUTPUT
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