Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Biến | Bể bộ đệm | Trạng thái InnoDB ]

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2024-09-19 19:12:06 0x7f9c043ed700 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: 265 srv_active, 0 srv_shutdown, 398 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 1591
OS WAIT ARRAY INFO: signal count 1594
RW-shared spins 439, rounds 850, OS waits 411
RW-excl spins 330, rounds 2839, OS waits 51
RW-sx spins 1, rounds 30, OS waits 1
Spin rounds per wait: 1.94 RW-shared, 8.60 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 25878
Purge done for trx's n:o < 25877 undo n:o < 0 state: running but idle
History list length 5
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421783044459112, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421783044458240, 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
1540 OS file reads, 47400 OS file writes, 24312 OS fsyncs
0.33 reads/s, 13504 avg bytes/read, 4.48 writes/s, 1.46 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 3 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 3 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 10 buffer(s)
1789.19 hash searches/s, 394.55 non-hash searches/s
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LOG
---
Log sequence number          68670969
Log buffer assigned up to    68670969
Log buffer completed up to   68670969
Log written up to            68670969
Log flushed up to            68670969
Added dirty pages up to      68670969
Pages flushed up to          68670969
Last checkpoint at           68670969
37641 log i/o's done, 1.02 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 3463948
Buffer pool size   8192
Free buffers       4336
Database pages     3827
Old database pages 1399
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 3615, not young 1380
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1409, created 2457, written 8299
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: 3827, unzip_LRU len: 0
I/O sum[161]: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=140307560589056 , state=sleeping
Number of rows inserted 22777, updated 11904, deleted 3643, read 1591268
0.46 inserts/s, 0.40 updates/s, 0.00 deletes/s, 2892.98 reads/s
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END OF INNODB MONITOR OUTPUT
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