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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2026-02-09 18:23:50 0x7fd64502e700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 20 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 7459 srv_active, 0 srv_shutdown, 1645688 srv_idle
srv_master_thread log flush and writes: 1652779
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 11288
OS WAIT ARRAY INFO: signal count 11285
RW-shared spins 10844, rounds 325124, OS waits 10832
RW-excl spins 130, rounds 3743, OS waits 123
RW-sx spins 3, rounds 90, OS waits 3
Spin rounds per wait: 29.98 RW-shared, 28.79 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 163746
Purge done for trx's n:o < 163746 undo n:o < 0 state: running
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422033268752888, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 422033268744456, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 422033268740240, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 422033268748672, 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: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (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
25295 OS file reads, 88425 OS file writes, 61028 OS fsyncs
0.55 reads/s, 16384 avg bytes/read, 0.35 writes/s, 0.35 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 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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
2.40 hash searches/s, 5.20 non-hash searches/s
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LOG
---
Log sequence number 110404916
Log flushed up to   110404896
Pages flushed up to 110396027
Last checkpoint at  110396018
0 pending log flushes, 0 pending chkp writes
38202 log i/o's done, 0.35 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 87840
Buffer pool size   1003
Free buffers       732
Database pages     267
Old database pages 0
Modified db pages  29
Percent of dirty pages(LRU & free pages): 2.900
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 6, not young 102
0.00 youngs/s, 0.00 non-youngs/s
Pages read 25255, created 562, written 42059
0.55 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 974 / 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: 267, unzip_LRU len: 0
I/O sum[195]:cur[11], 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=2429, Main thread ID=140557426878208, state: sleeping
Number of rows inserted 46, updated 9020, deleted 0, read 2439820
0.00 inserts/s, 0.35 updates/s, 0.00 deletes/s, 2.35 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 9248
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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