系统结构作业第三章.htm

清华大学出版得计算机系统结构得答案

style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-family: 楷体_GB2312"><SPAN 
style="mso-list: Ignore">（3）<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp; 
</SPAN></SPAN></SPAN><![endif]><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">e 
= 1/[h+(1-h)r]<o:p></o:p></SPAN></P>
<P class=MsoNormalIndent 
style="MARGIN-LEFT: 47.25pt; TEXT-INDENT: -26.25pt; mso-list: l4 level1 lfo1; tab-stops: list 47.25pt"><![if !supportLists]><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-family: 楷体_GB2312"><SPAN 
style="mso-list: Ignore">（4）<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp; 
</SPAN></SPAN></SPAN><![endif]><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormalIndent 
style="MARGIN-LEFT: 47.25pt; TEXT-INDENT: -26.25pt; mso-list: l4 level1 lfo1; tab-stops: list 47.25pt"><![if !supportLists]><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-family: 楷体_GB2312"><SPAN 
style="mso-list: Ignore">（5）<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp; 
</SPAN></SPAN></SPAN><![endif]><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">当</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">r 
= 100</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">时，</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">h&gt;0.99947<o:p></o:p></SPAN></P>
<P class=MsoNormalIndent 
style="MARGIN-LEFT: 47.25pt; TEXT-INDENT: -26.25pt; mso-list: l4 level1 lfo1; tab-stops: list 47.25pt"><![if !supportLists]><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-family: 楷体_GB2312"><SPAN 
style="mso-list: Ignore">（6）<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp; 
</SPAN></SPAN></SPAN><![endif]><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">P134</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">公式，</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">H<SPAN 
class=GramE>’</SPAN> = (H+n-1)/n=(0.96+5D-1)/5D=0.99947<o:p></o:p></SPAN></P>
<P class=MsoNormalIndent style="MARGIN-LEFT: 47.25pt; TEXT-INDENT: 0cm"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">计算得：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">D&gt;15.05</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">，取</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">D=16<o:p></o:p></SPAN></P>
<P class=MsoNormalIndent style="MARGIN-LEFT: 21pt; TEXT-INDENT: 0cm"><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">3.2</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">题：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormalIndent 
style="MARGIN-LEFT: 47.25pt; TEXT-INDENT: -26.25pt; mso-list: l0 level1 lfo2; tab-stops: list 47.25pt"><![if !supportLists]><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-family: 楷体_GB2312"><SPAN 
style="mso-list: Ignore">（1）<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp; 
</SPAN></SPAN></SPAN><![endif]><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">T=H1T1+(1-H1)H2T2+(1-H1)(1-H2)T3</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">；</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormalIndent 
style="MARGIN-LEFT: 47.25pt; TEXT-INDENT: -26.25pt; mso-list: l0 level1 lfo2; tab-stops: list 47.25pt"><![if !supportLists]><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-family: 楷体_GB2312"><SPAN 
style="mso-list: Ignore">（2）<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp; 
</SPAN></SPAN></SPAN><![endif]><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">当</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">s3&gt;&gt;s1</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">且</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">s3&gt;&gt;s2</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">时，平均价格</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">c</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">约等于</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">c3</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">。</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormalIndent style="MARGIN-LEFT: 21pt; TEXT-INDENT: 0cm"><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">3.3</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">题：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormalIndent 
style="MARGIN-LEFT: 63pt; TEXT-INDENT: -42pt; mso-list: l15 level1 lfo3; tab-stops: list 63.0pt"><![if !supportLists]><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-family: 楷体_GB2312"><SPAN 
style="mso-list: Ignore">（1）<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp; 
</SPAN></SPAN></SPAN><![endif]><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">t 
= ht1 + (1 – h)t2, <o:p></o:p></SPAN></P>
<P class=MsoNormalIndent style="MARGIN-LEFT: 63pt; TEXT-INDENT: 0.75pt"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">当</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">cache</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">为</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">64k</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">时，</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">t 
= 0.7*20ns + (1-0.7)*200ns = 74ns</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">；当</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">cache=128k 
</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">时，</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">t 
= 38ns</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">；</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormalIndent style="MARGIN-LEFT: 42.5pt; TEXT-INDENT: 21.25pt"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">当</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">cache=256k</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">时，</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">t=23.6ns<o:p></o:p></SPAN></P>
<P class=MsoNormalIndent 
style="MARGIN-LEFT: 63pt; TEXT-INDENT: -42pt; mso-list: l15 level1 lfo3; tab-stops: list 63.0pt"><![if !supportLists]><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-family: 楷体_GB2312"><SPAN 
style="mso-list: Ignore">（2）<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp; </SPAN></SPAN></SPAN><![endif]><!--[if gte vml 1]><o:wrapblock><v:shapetype 
id=_x0000_t75 coordsize = "21600,21600" o:preferrelative = "t" o:spt = "75" 
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"sum @10 21600 0 "></v:f></v:formulas><v:path o:extrusionok = "f" 
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style="MARGIN-TOP: 0px; Z-INDEX: 2; LEFT: 0px; MARGIN-LEFT: 81pt; WIDTH: 260.05pt; POSITION: absolute; HEIGHT: 49pt; TEXT-ALIGN: left" 
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style="mso-ignore: vglayout" clear=all><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">按照公式：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormalIndent style="MARGIN-LEFT: 21pt; TEXT-INDENT: 0cm"><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
</SPAN><SPAN style="mso-spacerun: yes">&nbsp;</SPAN>cache=64k, 
c=0.2585</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">美元</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">/k</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.0pt">字节；</SPAN><SPAN 
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style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormalIndent style="MARGIN-LEFT: 21pt; TEXT-INDENT: 0cm"><SPAN