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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2026-04-12 03:17:12 0x322c 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: 188656 srv_active, 0 srv_shutdown, 33011 srv_idle
srv_master_thread log flush and writes: 221667
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 10749612
OS WAIT ARRAY INFO: signal count 452686
RW-shared spins 68895, rounds 2021824, OS waits 57703
RW-excl spins 3410, rounds 61995, OS waits 1683
RW-sx spins 71, rounds 1400, OS waits 37
Spin rounds per wait: 29.35 RW-shared, 18.18 RW-excl, 19.72 RW-sx
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TRANSACTIONS
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Trx id counter 8624725
Purge done for trx's n:o < 8624724 undo n:o < 0 state: running
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283722789732496, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789749168, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789745000, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789740832, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789736664, 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
454389 OS file reads, 2416946 OS file writes, 1346831 OS fsyncs
0.78 reads/s, 16384 avg bytes/read, 8.90 writes/s, 5.24 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, 187 merges
merged operations:
 insert 535, delete mark 3, delete 2
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 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 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
21.32 hash searches/s, 46.44 non-hash searches/s
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LOG
---
Log sequence number 4938500282
Log flushed up to   4938500262
Pages flushed up to 4938499150
Last checkpoint at  4938493097
0 pending log flushes, 0 pending chkp writes
696405 log i/o's done, 2.76 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 122696
Buffer pool size   1003
Free buffers       740
Database pages     256
Old database pages 0
Modified db pages  3
Percent of dirty pages(LRU & free pages): 0.301
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 454337, created 14466, written 1458350
0.78 reads/s, 0.07 creates/s, 5.17 writes/s
Buffer pool hit rate 994 / 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[296]: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=18880, Main thread ID=14924, state: sleeping
Number of rows inserted 2478, updated 373698, deleted 1479, read 12281848
0.00 inserts/s, 1.27 updates/s, 0.00 deletes/s, 30.44 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2260
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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