存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
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变量
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缓冲池
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InnoDB 状态
]
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2024-11-23 11:56:59 0x16c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 14 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 11316 srv_active, 0 srv_shutdown, 337940 srv_idle
srv_master_thread log flush and writes: 349256
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 325432
OS WAIT ARRAY INFO: signal count 51006
RW-shared spins 0, rounds 43160, OS waits 20957
RW-excl spins 0, rounds 12983, OS waits 412
RW-sx spins 120, rounds 3600, OS waits 119
Spin rounds per wait: 43160.00 RW-shared, 12983.00 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 3504567
Purge done for trx's n:o < 3504567 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 281475184599352, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 281475184603568, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 281475184595136, 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: 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
102990 OS file reads, 132437 OS file writes, 95687 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 1.29 writes/s, 0.50 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, 49 merges
merged operations:
insert 831, 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 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 1 buffer(s)
2.00 hash searches/s, 8.50 non-hash searches/s
---
LOG
---
Log sequence number 964963733
Log flushed up to 964963733
Pages flushed up to 964963733
Last checkpoint at 964963724
0 pending log flushes, 0 pending chkp writes
60142 log i/o's done, 0.36 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 2457216
Buffer pool size 1002
Free buffers 740
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 1511, not young 2162944
0.00 youngs/s, 0.00 non-youngs/s
Pages read 101917, created 740, written 59827
0.00 reads/s, 0.00 creates/s, 0.86 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[34]: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
0 read views open inside InnoDB
Process ID=4940, Main thread ID=1252, state: sleeping
Number of rows inserted 2578, updated 10445, deleted 0, read 13587186
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 2.00 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 87372
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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