Moteurs de stockage

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variables | Mémoire tampon | État InnoDB ]

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2026-05-18 16:31:48 0x7133183d36c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 14 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 6849 srv_active, 0 srv_shutdown, 88760 srv_idle
srv_master_thread log flush and writes: 95607
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 160776
OS WAIT ARRAY INFO: signal count 68044
RW-shared spins 1793, rounds 53581, OS waits 1780
RW-excl spins 135, rounds 2268, OS waits 65
RW-sx spins 2, rounds 60, OS waits 2
Spin rounds per wait: 29.88 RW-shared, 16.80 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 37428
Purge done for trx's n:o < 37428 undo n:o < 0 state: running but idle
History list length 8
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 405939449045376, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 405939449036944, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 405939449041160, 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: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (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
12614 OS file reads, 78685 OS file writes, 43847 OS fsyncs
11.21 reads/s, 16384 avg bytes/read, 26.14 writes/s, 10.86 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 0 buffer(s)
Hash table size 4441, node heap has 0 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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
26.21 hash searches/s, 74.14 non-hash searches/s
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LOG
---
Log sequence number 14227558
Log flushed up to   14227558
Pages flushed up to 14222838
Last checkpoint at  14202834
0 pending log flushes, 0 pending chkp writes
21507 log i/o's done, 6.14 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 122000
Buffer pool size   1003
Free buffers       740
Database pages     260
Old database pages 0
Modified db pages  9
Percent of dirty pages(LRU & free pages): 0.899
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 12561, created 461, written 49343
11.21 reads/s, 0.21 creates/s, 18.07 writes/s
Buffer pool hit rate 958 / 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: 260, unzip_LRU len: 0
I/O sum[884]:cur[1], 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=39233, Main thread ID=124463748196032, state: sleeping
Number of rows inserted 62, updated 11009, deleted 0, read 228661
0.00 inserts/s, 4.86 updates/s, 0.00 deletes/s, 25.86 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 18349
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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