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lines changed Original file line number Diff line number Diff line change 73
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```
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<div align =" center " > <img src =" https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/eb859228-c0f2-4bce-910d-d9f76929352b.png " /> </div ><br >
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## 3. 最近未使用
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> NRU, Not Recently Used
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NRU 优先换出已经被修改的脏页面(R=0,M=1),而不是被频繁使用的干净页面(R=1,M=0)。
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- ## 4. 先进先出
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+ ## 4. 先进先出
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> FIFO, First In First Out
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Original file line number Diff line number Diff line change 73
73
```
74
74
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75
<div align =" center " > <img src =" https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/eb859228-c0f2-4bce-910d-d9f76929352b.png " /> </div ><br >
76
+
76
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## 3. 最近未使用
77
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79
> NRU, Not Recently Used
88
89
89
90
NRU 优先换出已经被修改的脏页面(R=0,M=1),而不是被频繁使用的干净页面(R=1,M=0)。
90
91
91
- ## 4. 先进先出
92
+ ## 4. 先进先出
92
93
93
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> FIFO, First In First Out
94
95
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