作者assassin88 (AI)
看板Grad-ProbAsk
标题[理工] [OS]-functionalist
时间Tue Jan 12 23:42:04 2010
Which of the functionalists listed below need to be supported by the operating
system for the folling two setting : (1)handheld devices (2)real-time system
恐龙 洪逸
(1) (2) (1) (2)
(a)Batch peogramming
(b)Virtual memory O O(←这个应该是错的?)
(c)Time sharing O O
这一题是恐龙上面(ch.1)的习题，答案为左边的版本。
但今天做到题目，洪逸书给的答案则是右边的版本。
请问哪一种才是对的？
另外，有个填空..想不出来：
The virtual memory treats the main memory as a fully set associative cache
which uses ______ policy for handing write hits.
请指教~感谢！
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 61.57.78.152
※ 编辑: assassin88 来自: 61.57.78.152 (01/12 23:44)
1F：推 killerjoe:write back? 01/13 00:32
2F：→ killerjoe:抱歉好像不是 01/13 00:33
3F：推 killerjoe:刚查一下又好像是@@ 01/13 00:37
4F：推 converse2006:我记得的跟楼上一样 不'过不确定 01/13 00:56
5F：推 killerjoe:因为要写穿(write through)到disk的代价太高 01/13 08:32
6F：→ killerjoe:因此采用write back的方式 01/13 08:33