Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Променливи | Buffer Pool | InnoDB Състояние ]

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2026-03-23 15:59:29 0x7f9e50062700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 28 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 83 srv_active, 0 srv_shutdown, 737 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 154
OS WAIT ARRAY INFO: signal count 153
RW-shared spins 4, rounds 7, OS waits 3
RW-excl spins 0, rounds 3, OS waits 3
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.75 RW-shared, 3.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10204
Purge done for trx's n:o < 10204 undo n:o < 0 state: running but idle
History list length 19
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421793060465256, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421793060464384, 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
1605 OS file reads, 2255 OS file writes, 797 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.21 writes/s, 0.18 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 1 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 3 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
2322.56 hash searches/s, 1721.94 non-hash searches/s
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LOG
---
Log sequence number          51082852
Log buffer assigned up to    51082852
Log buffer completed up to   51082852
Log written up to            51082852
Log flushed up to            51082852
Added dirty pages up to      51082852
Pages flushed up to          51082852
Last checkpoint at           51082852
516 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 861413
Buffer pool size   8192
Free buffers       6589
Database pages     1584
Old database pages 571
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 514, not young 1497
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1422, created 621, written 1324
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: 1584, unzip_LRU len: 0
I/O sum[4]: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=370, Main thread ID=140317576595200 , state=sleeping
Number of rows inserted 133009, updated 502, deleted 1, read 2407132
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 2935.18 reads/s
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END OF INNODB MONITOR OUTPUT
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