存储引擎

InnoDB

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

[ 变量 | 缓冲池 | InnoDB 状态 ]

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2024-12-28 00:20:05 0xb24 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 41 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 22 srv_active, 0 srv_shutdown, 470987 srv_idle
srv_master_thread log flush and writes: 471009
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 173
OS WAIT ARRAY INFO: signal count 98
RW-shared spins 37, rounds 1034, OS waits 33
RW-excl spins 4, rounds 95, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 27.95 RW-shared, 23.75 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 1368
Purge done for trx's n:o < 1368 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 282281625391464, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282281625387296, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282281625383128, ACTIVE 72643 sec
0 lock struct(s), heap size 1128, 0 row lock(s)
MySQL thread id 1715, OS thread handle 2852, query id 100319 localhost ::1 root 
Trx read view will not see trx with id >= 1368, sees < 1368
---TRANSACTION 282281625378960, ACTIVE 72853 sec
0 lock struct(s), heap size 1128, 0 row lock(s)
MySQL thread id 1714, OS thread handle 5724, query id 99616 localhost ::1 root 
Trx read view will not see trx with id >= 1368, sees < 1368
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FILE I/O
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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
592 OS file reads, 298 OS file writes, 132 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
0.12 hash searches/s, 0.07 non-hash searches/s
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LOG
---
Log sequence number 352174
Log flushed up to   352174
Pages flushed up to 352174
Last checkpoint at  352165
0 pending log flushes, 0 pending chkp writes
92 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 115184
Buffer pool size   1003
Free buffers       744
Database pages     256
Old database pages 0
Modified db pages  0
Percent of dirty pages(LRU & free pages): 0.000
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 542, created 131, written 195
0.00 reads/s, 0.00 creates/s, 0.00 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: 256, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
2 read views open inside InnoDB
Process ID=2380, Main thread ID=6920, state: sleeping
Number of rows inserted 0, updated 11, deleted 0, read 63201
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.41 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 820
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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