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                            [TOC]

## 進程調度
進程調度是指計算機通過決策決定哪個就緒進程可以獲得CPU使用權

### 步驟
1. 保留舊進程的運行信息,請出舊進程(收拾包袱)
2. 選擇新進程,準備運行環境并分配CPU(新進駐)

###  調取三種機制
1. 就緒隊列的排隊機制
2. 選擇運行進程的委派機制
3. 新老進程的上下文切換機制
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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