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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2025-01-23 11:54:33 0x3398 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 16 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 5611 srv_active, 0 srv_shutdown, 626015 srv_idle
srv_master_thread log flush and writes: 631626
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 58687
OS WAIT ARRAY INFO: signal count 57735
RW-shared spins 80664, rounds 1850927, OS waits 50448
RW-excl spins 8436, rounds 133898, OS waits 3817
RW-sx spins 129, rounds 2438, OS waits 79
Spin rounds per wait: 22.95 RW-shared, 15.87 RW-excl, 18.90 RW-sx
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TRANSACTIONS
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Trx id counter 1283920
Purge done for trx's n:o < 1283920 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284373373305048, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284373373300880, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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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
857689 OS file reads, 167418 OS file writes, 86827 OS fsyncs
0.06 reads/s, 16384 avg bytes/read, 0.62 writes/s, 0.56 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 387, seg size 389, 8380 merges
merged operations:
 insert 16545, delete mark 72, delete 1
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 7 buffer(s)
Hash table size 4441, node heap has 2 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)
5.94 hash searches/s, 3.37 non-hash searches/s
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LOG
---
Log sequence number 440194686
Log flushed up to   440194608
Pages flushed up to 440194608
Last checkpoint at  440194599
0 pending log flushes, 0 pending chkp writes
52622 log i/o's done, 0.38 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 33554432
Dictionary memory allocated 252904
Buffer pool size   1003
Free buffers       733
Database pages     256
Old database pages 0
Modified db pages  4
Percent of dirty pages(LRU & free pages): 0.404
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 462998, not young 8494137
0.00 youngs/s, 0.00 non-youngs/s
Pages read 857585, created 664, written 102977
0.06 reads/s, 0.00 creates/s, 0.19 writes/s
Buffer pool hit rate 999 / 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[21]: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=4588, Main thread ID=6832, state: sleeping
Number of rows inserted 17121, updated 1882, deleted 6204, read 980812219
0.00 inserts/s, 0.06 updates/s, 0.00 deletes/s, 364.10 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1725
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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