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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2025-03-14 23:44:21 0x1218 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 43 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 169661 srv_active, 0 srv_shutdown, 2435648 srv_idle
srv_master_thread log flush and writes: 2605309
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 11332643
OS WAIT ARRAY INFO: signal count 250897
RW-shared spins 337343, rounds 10120171, OS waits 185373
RW-excl spins 12036, rounds 357439, OS waits 9301
RW-sx spins 17, rounds 480, OS waits 8
Spin rounds per wait: 30.00 RW-shared, 29.70 RW-excl, 28.24 RW-sx
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TRANSACTIONS
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Trx id counter 379709
Purge done for trx's n:o < 379709 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 282850182410528, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282850182406360, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282850182402192, 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
124927 OS file reads, 2129560 OS file writes, 1617066 OS fsyncs
0.09 reads/s, 16384 avg bytes/read, 1.21 writes/s, 0.49 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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
1.07 hash searches/s, 2.51 non-hash searches/s
---
LOG
---
Log sequence number 252127070
Log flushed up to   252127070
Pages flushed up to 252127070
Last checkpoint at  252127027
0 pending log flushes, 0 pending chkp writes
1025166 log i/o's done, 0.30 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 95152
Buffer pool size   1003
Free buffers       741
Database pages     258
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 124885, created 8265, written 892516
0.09 reads/s, 0.00 creates/s, 0.84 writes/s
Buffer pool hit rate 989 / 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: 258, unzip_LRU len: 0
I/O sum[49]: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=3900, Main thread ID=1092, state: sleeping
Number of rows inserted 190, updated 168816, deleted 134, read 3502916
0.00 inserts/s, 0.05 updates/s, 0.00 deletes/s, 0.98 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 3358
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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