Mecanismos de armazenamento

InnoDB

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

[ Variáveis | Pool de buffer | Status do InnoDB ]

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2026-07-21 11:29:09 0x1df4 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 42 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 539 srv_active, 0 srv_shutdown, 433651 srv_idle
srv_master_thread log flush and writes: 434190
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 3878
OS WAIT ARRAY INFO: signal count 2183
RW-shared spins 1157, rounds 33569, OS waits 1067
RW-excl spins 626, rounds 3268, OS waits 21
RW-sx spins 8, rounds 263, OS waits 8
Spin rounds per wait: 29.01 RW-shared, 5.22 RW-excl, 32.88 RW-sx
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TRANSACTIONS
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Trx id counter 98715
Purge done for trx's n:o < 98715 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283853771559344, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283853771555176, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283853771542672, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283853771551008, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283853771546840, 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
4899 OS file reads, 12517 OS file writes, 6423 OS fsyncs
1.24 reads/s, 16384 avg bytes/read, 5.98 writes/s, 2.98 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 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 2 buffer(s)
8.83 hash searches/s, 20.74 non-hash searches/s
---
LOG
---
Log sequence number 42692061
Log flushed up to   42692041
Pages flushed up to 42678851
Last checkpoint at  42678851
0 pending log flushes, 0 pending chkp writes
4365 log i/o's done, 2.05 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 150240
Buffer pool size   1003
Free buffers       734
Database pages     261
Old database pages 0
Modified db pages  33
Percent of dirty pages(LRU & free pages): 3.313
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 4839, created 200, written 7504
1.24 reads/s, 0.05 creates/s, 3.60 writes/s
Buffer pool hit rate 983 / 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[201]:cur[2], 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=29312, Main thread ID=29772, state: sleeping
Number of rows inserted 1123, updated 573, deleted 1, read 1737042
0.00 inserts/s, 1.24 updates/s, 0.00 deletes/s, 8.31 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1766
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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