Re: [理工] [計組]-台大95-資工所
※ 引述《assassin88 (AI)》之銘言：
: 如題，想請問該年的第八第九小題，
: 關於transaction required究竟要怎麼看才對呢？
: 這是台大該年的考古題：http://www.lib.ntu.edu.tw/exam/graduate/95/422.pdf
: (page3中間)
: 麻煩解答了~感謝
以下是我的想法
8.
steps processor 1 processor 2 Transaction
initial valid valid
P1write write back update
100 100(block25) 100(block25) Y
P2write update update
104 104(block26) 104(block26) Y
P1Read valid valid N
100
P2Read valid valid N
104
P1Read valid valid N
104
9.
steps processor 1 processor 2 Transaction
initail valid valid
P1write write back invalid Y
100 100(block7) 100(block7)
P2Write invalid write back Y
104 104(block7) 104(block7)
P1Read read from memory valid Y
100 100(block7)
P2Read valid valid N
104
P1Read valid valid N
104
如果錯誤請指教~謝謝
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