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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2026-06-10 01:53:07 0x1fd4 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 27 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 17406 srv_active, 0 srv_shutdown, 795007 srv_idle
srv_master_thread log flush and writes: 812413
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 94076
OS WAIT ARRAY INFO: signal count 36778
RW-shared spins 14511, rounds 433421, OS waits 14141
RW-excl spins 785, rounds 39436, OS waits 1218
RW-sx spins 6, rounds 44, OS waits 1
Spin rounds per wait: 29.87 RW-shared, 50.24 RW-excl, 7.33 RW-sx
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TRANSACTIONS
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Trx id counter 371230
Purge done for trx's n:o < 371230 undo n:o < 0 state: running but idle
History list length 2
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283064779739424, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283064779735256, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283064779731088, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
--------
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
94518 OS file reads, 181220 OS file writes, 120879 OS fsyncs
0.07 reads/s, 16384 avg bytes/read, 0.33 writes/s, 0.22 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 1 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)
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)
0.93 hash searches/s, 1.89 non-hash searches/s
---
LOG
---
Log sequence number 226088027
Log flushed up to 226088007
Pages flushed up to 226086926
Last checkpoint at 226085730
0 pending log flushes, 0 pending chkp writes
63556 log i/o's done, 0.11 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 1795368
Buffer pool size 1003
Free buffers 738
Database pages 257
Old database pages 0
Modified db pages 3
Percent of dirty pages(LRU & free pages): 0.301
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 873, not young 115309
0.00 youngs/s, 0.00 non-youngs/s
Pages read 88104, created 1074, written 98444
0.07 reads/s, 0.00 creates/s, 0.19 writes/s
Buffer pool hit rate 992 / 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: 257, unzip_LRU len: 0
I/O sum[7]: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=4588, Main thread ID=8424, state: sleeping
Number of rows inserted 275, updated 18703, deleted 174, read 39774341
0.00 inserts/s, 0.07 updates/s, 0.00 deletes/s, 0.89 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 761897
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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