[理工] 計組 I/O

看板Grad-ProbAsk作者 (ponny)時間9年前 (2016/09/08 17:19), 編輯推噓3(3010)
留言13則, 2人參與, 最新討論串2/2 (看更多)
想請問大大這題是什麼意思以及如何去解 解答也看不太懂 張凡下冊260頁 http://i.imgur.com/odfDhik.jpg
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09/09 00:47, , 1F
想知道 幫高調
09/09 00:47, 1F

09/12 00:10, , 2F
再高調一次
09/12 00:10, 2F

09/12 20:40, , 3F
這題跟前一題條件有關 assume that transactions may
09/12 20:40, 3F

09/12 20:41, , 4F
requires 5 I/O operations
09/12 20:41, 4F

09/12 20:41, , 5F
另外 最後一行 arrive at the beginning of a 1-sec
09/12 20:41, 5F

09/12 20:42, , 6F
我覺得這個地方應該是 100us
09/12 20:42, 6F

09/12 20:43, , 7F
9 transcation * 5 * 20 ms + 100us + 10th transcat
09/12 20:43, 7F

09/12 20:46, , 8F
阿 我知道了 抱歉 是100ms 沒錯 我另外打一篇
09/12 20:46, 8F

09/12 20:51, , 9F
仔細想想是應該還是100us QQ
09/12 20:51, 9F

09/12 20:51, , 10F
tions = 9*5*20ms + 100us + 1*5*20ms = 1.0001s
09/12 20:51, 10F

09/12 20:53, , 11F
B: 9*5*18ms+ 100us = 810.1ms < 1s
09/12 20:53, 11F

09/12 20:55, , 12F
∴加上下輪10 transaction 1th and 2th=990.1ms <1s
09/12 20:55, 12F

09/12 21:04, , 13F
更正 10th 11th transaction
09/12 21:04, 13F
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