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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Miguel,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If you are testing a caching server, then use resperf and not dnsperf. Make sure to have a fast machine that you run from. The 3 million sample is not that very accurate. Servfails and Nxdomains are overrepresented. The mix between cache hit/misses are not evenly distributed in the file either. So you can’t really draw any intelligent conclusions from that file.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I recommend that you create your own file based on your exact traffic. Can you for example do tcpdump and then create a little script to make a query file. I have query files if you need, feel free to reach out to me off list and I will provide them to you.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks /Stephan<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> dns-operations-bounces@lists.dns-oarc.net [mailto:dns-operations-bounces@lists.dns-oarc.net] <b>On Behalf Of </b>Miguel Alejandro González<br><b>Sent:</b> Monday, December 05, 2011 7:56 PM<br><b>To:</b> dns-operations@lists.dns-oarc.net<br><b>Subject:</b> [dns-operations] Load testing<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hello<br><br>What is a good tool to load test a dns server?<br><br>I'm currently using dnsperf. I ran the 3 million sample data<br><br>But maybe dnsperf is already old and there are more tools out there that you guys are using.<br><br>Regards!<o:p></o:p></p></div></div></body></html>