update lec 05-08
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@ -72,4 +72,9 @@ IF before clock sweep: (used,dirty) = (1,1), THEN after clock sweep: (used, dirt
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IF before clock sweep: (used,dirty) = (1,1), THEN after clock sweep: (used, dirty)=(1,0).
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是否可行?
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6 在clock算法实现中,pte中的uesd bit位是否可以让os来设置1 or 0 ?
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6 在clock算法实现中,pte中的uesd bit位是否可以让os来设置1 or 0 ? 为什么?
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7 在enhanced clock算法中的dirty bit位是否可以让os来设置1 or 0 ? 为什么?
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8 如果在ucore中实现精确的LRU算法,如何设计?需要硬件和OS分别完成什么事情?
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lectures/lec07-08-proc-thread-20131014-1017.pdf
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