Mecanismos de armazenamento

InnoDB

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

[ Variáveis | Pool de buffer | Estado do InnoDB ]

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2026-06-25 00:44:24 0x12c4 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 57 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 540 srv_active, 0 srv_shutdown, 534766 srv_idle
srv_master_thread log flush and writes: 535306
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 12074
OS WAIT ARRAY INFO: signal count 946
RW-shared spins 1744, rounds 16948, OS waits 409
RW-excl spins 293, rounds 1238, OS waits 15
RW-sx spins 65, rounds 204, OS waits 0
Spin rounds per wait: 9.72 RW-shared, 4.23 RW-excl, 3.14 RW-sx
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TRANSACTIONS
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Trx id counter 881140
Purge done for trx's n:o < 881140 undo n:o < 0 state: running
History list length 18
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283232881570008, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283232881565840, 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
26017 OS file reads, 11344 OS file writes, 5139 OS fsyncs
0.93 reads/s, 16384 avg bytes/read, 2.74 writes/s, 1.44 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 8, seg size 10, 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)
15.91 hash searches/s, 29.23 non-hash searches/s
---
LOG
---
Log sequence number 549189223
Log flushed up to   549189203
Pages flushed up to 549185555
Last checkpoint at  549180548
0 pending log flushes, 0 pending chkp writes
3204 log i/o's done, 0.84 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 2175976
Buffer pool size   1003
Free buffers       734
Database pages     261
Old database pages 0
Modified db pages  7
Percent of dirty pages(LRU & free pages): 0.703
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 350, not young 103327
0.00 youngs/s, 0.00 non-youngs/s
Pages read 25144, created 217, written 7405
0.93 reads/s, 0.04 creates/s, 1.68 writes/s
Buffer pool hit rate 988 / 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: 261, unzip_LRU len: 0
I/O sum[76]:cur[8], 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=5872, Main thread ID=7860, state: sleeping
Number of rows inserted 102, updated 1890, deleted 806, read 1876852
0.00 inserts/s, 0.51 updates/s, 0.00 deletes/s, 18.60 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 39072
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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