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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2026-08-01 11:48:09 0x13cc INNODB MONITOR OUTPUT
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Per second averages calculated from the last 59 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 1063450 srv_active, 0 srv_shutdown, 376608 srv_idle
srv_master_thread log flush and writes: 1440058
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 986289
OS WAIT ARRAY INFO: signal count 860442
RW-shared spins 407874, rounds 11692418, OS waits 387262
RW-excl spins 5923, rounds 163110, OS waits 5188
RW-sx spins 292, rounds 8130, OS waits 241
Spin rounds per wait: 28.67 RW-shared, 27.54 RW-excl, 27.84 RW-sx
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TRANSACTIONS
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Trx id counter 69966048
Purge done for trx's n:o < 69966048 undo n:o < 0 state: running
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 282927380095192, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282927380091024, 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
1925656 OS file reads, 15049492 OS file writes, 8447895 OS fsyncs
2.68 reads/s, 16384 avg bytes/read, 17.39 writes/s, 8.59 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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
26.37 hash searches/s, 58.00 non-hash searches/s
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LOG
---
Log sequence number 43642049497
Log flushed up to 43642049497
Pages flushed up to 43642039839
Last checkpoint at 43642036815
0 pending log flushes, 0 pending chkp writes
4319961 log i/o's done, 4.53 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 247896
Buffer pool size 1003
Free buffers 742
Database pages 256
Old database pages 0
Modified db pages 23
Percent of dirty pages(LRU & free pages): 2.302
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 13541, not young 863009
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1925542, created 65296, written 9157778
4.50 reads/s, 1.00 creates/s, 6.00 writes/s
Buffer pool hit rate 984 / 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[676]:cur[6], 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=6012, Main thread ID=8116, state: sleeping
Number of rows inserted 733, updated 2402384, deleted 40, read 103736617
0.00 inserts/s, 3.10 updates/s, 0.00 deletes/s, 29.93 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 213904
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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