Motori di memorizzazione

InnoDB

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

[ Variabili | Buffer Pool | Stato InnoDB ]

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2026-03-27 07:25:41 0x7f87cdd92700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 48 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 18149 srv_active, 0 srv_shutdown, 8267 srv_idle
srv_master_thread log flush and writes: 26413
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 43185
OS WAIT ARRAY INFO: signal count 35642
RW-shared spins 0, rounds 16962, OS waits 8444
RW-excl spins 0, rounds 5319, OS waits 182
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 16962.00 RW-shared, 5319.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 104782
Purge done for trx's n:o < 104782 undo n:o < 0 state: running but idle
History list length 22
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421696249094488, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421696249098744, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421696249090232, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (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
862 OS file reads, 227335 OS file writes, 116520 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 9.31 writes/s, 4.87 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 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 9 buffer(s)
Hash table size 69257, node heap has 2 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 3 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
5.27 hash searches/s, 0.65 non-hash searches/s
---
LOG
---
Log sequence number 54469977
Log flushed up to   54469856
Pages flushed up to 54461060
Last checkpoint at  54456870
0 pending log flushes, 0 pending chkp writes
68895 log i/o's done, 2.83 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 128256
Buffer pool size   16024
Free buffers       15109
Database pages     849
Old database pages 333
Modified db pages  15
Percent of dirty pages(LRU & free pages): 0.094
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 703, created 146, written 141077
0.00 reads/s, 0.00 creates/s, 5.67 writes/s
Buffer pool hit rate 1000 / 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: 849, unzip_LRU len: 0
I/O sum[0]: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=908, Main thread ID=140220775212800, state: sleeping
Number of rows inserted 1, updated 33063, deleted 0, read 1345820
0.00 inserts/s, 1.42 updates/s, 0.00 deletes/s, 2.85 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2508
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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