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<div class=Section1>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi there<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>My test result list below. The odd thing is why performance of
machine-2 is worse than machine-3?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=841
style='width:631.0pt;margin-left:-1.15pt;border-collapse:collapse'>
<tr style='height:54.0pt'>
<td width=118 style='width:88.25pt;border:solid windowtext 1.0pt;background:
#1F497D;padding:0cm 5.4pt 0cm 5.4pt;height:54.0pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
lang=EN-US style='font-size:11.0pt;font-family:SimSun;color:white'>Target
machine<o:p></o:p></span></b></p>
</td>
<td width=357 style='width:268.1pt;border:solid windowtext 1.0pt;border-left:
none;background:#1F497D;padding:0cm 5.4pt 0cm 5.4pt;height:54.0pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
lang=EN-US style='font-size:11.0pt;font-family:SimSun;color:white'>Configuration<o:p></o:p></span></b></p>
</td>
<td width=172 style='width:129.0pt;border:solid windowtext 1.0pt;border-left:
none;background:#1F497D;padding:0cm 5.4pt 0cm 5.4pt;height:54.0pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
lang=EN-US style='font-size:11.0pt;font-family:SimSun;color:white'>performance-persistence<o:p></o:p></span></b></p>
</td>
<td width=194 style='width:145.65pt;border:solid windowtext 1.0pt;border-left:
none;background:#1F497D;padding:0cm 5.4pt 0cm 5.4pt;height:54.0pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
lang=EN-US style='font-size:11.0pt;font-family:SimSun;color:white'>performance-nonpersistence<o:p></o:p></span></b></p>
</td>
</tr>
<tr style='height:54.0pt'>
<td width=118 style='width:88.25pt;border:solid windowtext 1.0pt;border-top:
none;padding:0cm 5.4pt 0cm 5.4pt;height:54.0pt'>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:SimSun;
color:black'>machine-1<o:p></o:p></span></p>
</td>
<td width=357 style='width:268.1pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt;height:54.0pt'>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:SimSun;
color:black'>physical machine<br>
SSD<br>
32 cpu cores(Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz)<br>
64G Memory<o:p></o:p></span></p>
</td>
<td width=172 style='width:129.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt;height:54.0pt'>
<p class=MsoNormal align=right style='text-align:right'><span lang=EN-US
style='font-size:11.0pt;font-family:SimSun;color:black'>22000<o:p></o:p></span></p>
</td>
<td width=194 style='width:145.65pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt;height:54.0pt'>
<p class=MsoNormal align=right style='text-align:right'><span lang=EN-US
style='font-size:11.0pt;font-family:SimSun;color:black'>24000<o:p></o:p></span></p>
</td>
</tr>
<tr style='height:81.0pt'>
<td width=118 style='width:88.25pt;border:solid windowtext 1.0pt;border-top:
none;padding:0cm 5.4pt 0cm 5.4pt;height:81.0pt'>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:SimSun;
color:black'>machine-2<o:p></o:p></span></p>
</td>
<td width=357 style='width:268.1pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt;height:81.0pt'>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:SimSun;
color:black'>vmware machine<br>
ssd<br>
8 cpu cores,<br>
24G Memory<br>
The based physical machine is the same as machine-1, and it is the only
vmware machine there.<o:p></o:p></span></p>
</td>
<td width=172 style='width:129.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt;height:81.0pt'>
<p class=MsoNormal align=right style='text-align:right'><span lang=EN-US
style='font-size:11.0pt;font-family:SimSun;color:red'>6000<o:p></o:p></span></p>
</td>
<td width=194 style='width:145.65pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt;height:81.0pt'>
<p class=MsoNormal align=right style='text-align:right'><span lang=EN-US
style='font-size:11.0pt;font-family:SimSun;color:black'>16000<o:p></o:p></span></p>
</td>
</tr>
<tr style='height:81.0pt'>
<td width=118 style='width:88.25pt;border:solid windowtext 1.0pt;border-top:
none;padding:0cm 5.4pt 0cm 5.4pt;height:81.0pt'>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:SimSun;
color:black'>machine-3<o:p></o:p></span></p>
</td>
<td width=357 style='width:268.1pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt;height:81.0pt'>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:SimSun;
color:black'>vmware machine<br>
sas<br>
4 cpu cores(Intel(R) Xeon(R) CPU E5-2650 2.0GHz)<br>
8G Memory.<br>
The performance of based physical machine is worse than machine-1. <o:p></o:p></span></p>
</td>
<td width=172 style='width:129.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt;height:81.0pt'>
<p class=MsoNormal align=right style='text-align:right'><span lang=EN-US
style='font-size:11.0pt;font-family:SimSun;color:black'>12000<o:p></o:p></span></p>
</td>
<td width=194 style='width:145.65pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt;height:81.0pt'>
<p class=MsoNormal align=right style='text-align:right'><span lang=EN-US
style='font-size:11.0pt;font-family:SimSun;color:black'>13000<o:p></o:p></span></p>
</td>
</tr>
</table>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The test client is the same, 5 queues, 5 producers and 10
consumer each queue. The version of Rabbitmq is 3.2.2.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'> I have tried below testing, but the result is the same. <o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:18.0pt;text-indent:-18.0pt;
mso-list:l1 level1 lfo2'><![if !supportLists]><span lang=EN-US
style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US style='font-size:10.5pt;
font-family:"Calibri","sans-serif";color:#1F497D'>Clone the whole machine-3 to
machine2<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:18.0pt;text-indent:-18.0pt;
mso-list:l1 level1 lfo2'><![if !supportLists]><span lang=EN-US
style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US style='font-size:10.5pt;
font-family:"Calibri","sans-serif";color:#1F497D'>Save mnesia to SAS disk<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:18.0pt;text-indent:-18.0pt;
mso-list:l1 level1 lfo2'><![if !supportLists]><span lang=EN-US
style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US style='font-size:10.5pt;
font-family:"Calibri","sans-serif";color:#1F497D'>Save mnesia to /dev/shm<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>During testing, I find the cpu us of machine-3 can reach to 90,
but it is only about 50 in machine-2. It seems the message persistence stage in
machine-2 is very slow. Can someone help me to figure out why.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-align:justify;text-justify:inter-ideograph'><span
lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thank you <o:p></o:p></span></p>
<p class=MsoNormal style='text-align:justify;text-justify:inter-ideograph'><span
lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-align:justify;text-justify:inter-ideograph'><span
lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Tonglang Huang<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
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