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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2025-05-06 23:23:13 0x7f00940aa700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 18 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 83 srv_active, 0 srv_shutdown, 361 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 123
OS WAIT ARRAY INFO: signal count 123
RW-shared spins 2, rounds 4, OS waits 2
RW-excl spins 6, rounds 180, OS waits 6
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 2.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10076
Purge done for trx's n:o < 10070 undo n:o < 0 state: running but idle
History list length 24
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421115603987048, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421115603986176, 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
1503 OS file reads, 1869 OS file writes, 665 OS fsyncs
0.17 reads/s, 16384 avg bytes/read, 2.22 writes/s, 1.72 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 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 8 buffer(s)
513.25 hash searches/s, 114.66 non-hash searches/s
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LOG
---
Log sequence number 51154932
Log buffer assigned up to 51154932
Log buffer completed up to 51154932
Log written up to 51154932
Log flushed up to 51154932
Added dirty pages up to 51154932
Pages flushed up to 51154932
Last checkpoint at 51154932
495 log i/o's done, 0.61 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 889892
Buffer pool size 8192
Free buffers 6645
Database pages 1527
Old database pages 557
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 637, not young 1697
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1348, created 547, written 1024
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: 1527, unzip_LRU len: 0
I/O sum[32]: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=374, Main thread ID=139640118118144 , state=sleeping
Number of rows inserted 83729, updated 593, deleted 0, read 660370
5.28 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1420.09 reads/s
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END OF INNODB MONITOR OUTPUT
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