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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2026-01-31 20:30:16 0x6c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 3 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 1021285 srv_active, 0 srv_shutdown, 903122 srv_idle
srv_master_thread log flush and writes: 1924407
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 1243337
OS WAIT ARRAY INFO: signal count 1224143
RW-shared spins 663531, rounds 18998160, OS waits 630131
RW-excl spins 5477, rounds 127454, OS waits 3929
RW-sx spins 257, rounds 6994, OS waits 209
Spin rounds per wait: 28.63 RW-shared, 23.27 RW-excl, 27.21 RW-sx
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TRANSACTIONS
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Trx id counter 39626659
Purge done for trx's n:o < 39626659 undo n:o < 0 state: running
History list length 5
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283096167137784, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283096167133616, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283096167129448, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283096167125280, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283096167121112, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283096167116944, 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
2990990 OS file reads, 14120528 OS file writes, 8154621 OS fsyncs
15.99 reads/s, 16384 avg bytes/read, 9.00 writes/s, 9.00 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)
33.99 hash searches/s, 121.63 non-hash searches/s
---
LOG
---
Log sequence number 25523877689
Log flushed up to 25523877669
Pages flushed up to 25523842482
Last checkpoint at 25523840759
0 pending log flushes, 0 pending chkp writes
4506303 log i/o's done, 7.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 247896
Buffer pool size 1003
Free buffers 710
Database pages 287
Old database pages 0
Modified db pages 67
Percent of dirty pages(LRU & free pages): 6.713
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 14019, not young 204561
0.00 youngs/s, 0.00 non-youngs/s
Pages read 2990887, created 100321, written 8191075
1000.00 reads/s, 1000.00 creates/s, 0.00 writes/s
Buffer pool hit rate 985 / 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: 287, unzip_LRU len: 0
I/O sum[405]:cur[3], 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=6216, Main thread ID=7484, state: sleeping
Number of rows inserted 1364, updated 2119441, deleted 50, read 116543452
0.00 inserts/s, 6.00 updates/s, 0.00 deletes/s, 123.29 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2597904
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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