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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2025-08-30 04:40:57 0x7fa8d531b700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 0 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 13681 srv_active, 0 srv_shutdown, 5253768 srv_idle
srv_master_thread log flush and writes: 5267146
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 77801
OS WAIT ARRAY INFO: signal count 46747
RW-shared spins 49269, rounds 1079380, OS waits 33486
RW-excl spins 50809, rounds 171992, OS waits 157
RW-sx spins 1109, rounds 8006, OS waits 91
Spin rounds per wait: 21.91 RW-shared, 3.39 RW-excl, 7.22 RW-sx
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TRANSACTIONS
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Trx id counter 7337256
Purge done for trx's n:o < 7337256 undo n:o < 0 state: running but idle
History list length 5
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421838119235848, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421838119231632, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421838119244280, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 421838119240064, 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
1659054 OS file reads, 615578 OS file writes, 249217 OS fsyncs
1000.00 reads/s, 16384 avg bytes/read, 1000.00 writes/s, 1000.00 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, 2403 merges
merged operations:
 insert 3084, delete mark 955, delete 455
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 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)
6000.00 hash searches/s, 18000.00 non-hash searches/s
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LOG
---
Log sequence number 1432478340
Log flushed up to   1432478320
Pages flushed up to 1432474765
Last checkpoint at  1432467933
0 pending log flushes, 0 pending chkp writes
155192 log i/o's done, 1.00 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 180560
Buffer pool size   1003
Free buffers       735
Database pages     260
Old database pages 0
Modified db pages  7
Percent of dirty pages(LRU & free pages): 0.703
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 27108, not young 588377
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1658977, created 10039, written 429192
1000.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 985 / 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: 260, unzip_LRU len: 0
I/O sum[1521]:cur[1], 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=2067, Main thread ID=140362869888768, state: sleeping
Number of rows inserted 14322, updated 21296, deleted 16418, read 29490729
0.00 inserts/s, 1000.00 updates/s, 0.00 deletes/s, 33000.00 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 6354
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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