Moteurs de stockage
InnoDB
Supports transactions, row-level locking, and foreign keys
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Variables
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Mémoire tampon
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État InnoDB
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2024-09-28 23:26:58 0x7f6150062700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 46 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 49 srv_active, 0 srv_shutdown, 620 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 122
OS WAIT ARRAY INFO: signal count 123
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 6, rounds 180, OS waits 6
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10067
Purge done for trx's n:o < 10060 undo n:o < 0 state: running but idle
History list length 14
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421530926185064, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421530926184192, 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, 1437 OS file writes, 522 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 4.00 writes/s, 0.87 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 4 buffer(s)
Hash table size 34679, node heap has 31 buffer(s)
2884.96 hash searches/s, 936.26 non-hash searches/s
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LOG
---
Log sequence number 51024789
Log buffer assigned up to 51024789
Log buffer completed up to 51024789
Log written up to 51024789
Log flushed up to 51024789
Added dirty pages up to 51024789
Pages flushed up to 51024789
Last checkpoint at 51024789
397 log i/o's done, 0.98 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 670154
Buffer pool size 8192
Free buffers 6557
Database pages 1560
Old database pages 555
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 578, not young 196661
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1413, created 280, written 851
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: 1560, unzip_LRU len: 0
I/O sum[131]: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=376, Main thread ID=140055440979712 , state=sleeping
Number of rows inserted 33505, updated 435, deleted 0, read 2605121
1.96 inserts/s, 0.46 updates/s, 0.00 deletes/s, 3907.89 reads/s
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END OF INNODB MONITOR OUTPUT
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