Moteurs de stockage
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
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Variables
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Mémoire tampon
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État InnoDB
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2026-06-17 07:43:16 0x2954 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 44 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 288248 srv_active, 0 srv_shutdown, 183494 srv_idle
srv_master_thread log flush and writes: 471742
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 238616
OS WAIT ARRAY INFO: signal count 233405
RW-shared spins 115690, rounds 3308407, OS waits 109417
RW-excl spins 1161, rounds 31508, OS waits 1003
RW-sx spins 60, rounds 1639, OS waits 49
Spin rounds per wait: 28.60 RW-shared, 27.14 RW-excl, 27.32 RW-sx
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TRANSACTIONS
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Trx id counter 60339690
Purge done for trx's n:o < 60339690 undo n:o < 0 state: running
History list length 2
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283612854989016, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283612854984848, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
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I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (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
804744 OS file reads, 3940501 OS file writes, 2169125 OS fsyncs
1.07 reads/s, 16384 avg bytes/read, 3.93 writes/s, 2.59 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 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
2.36 hash searches/s, 7.45 non-hash searches/s
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LOG
---
Log sequence number 38637825262
Log flushed up to 38637825262
Pages flushed up to 38637825262
Last checkpoint at 38637825219
0 pending log flushes, 0 pending chkp writes
1135381 log i/o's done, 1.48 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 33554432
Dictionary memory allocated 247896
Buffer pool size 1003
Free buffers 741
Database pages 256
Old database pages 0
Modified db pages 0
Percent of dirty pages(LRU & free pages): 0.000
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 5416, not young 222760
0.00 youngs/s, 0.00 non-youngs/s
Pages read 804623, created 25328, written 2402818
1.07 reads/s, 0.00 creates/s, 2.07 writes/s
Buffer pool hit rate 957 / 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: 256, unzip_LRU len: 0
I/O sum[196]:cur[27], 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=6120, Main thread ID=8260, state: sleeping
Number of rows inserted 222, updated 606090, deleted 12, read 33227733
0.00 inserts/s, 0.48 updates/s, 0.00 deletes/s, 4.25 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 50619
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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