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<p class="MsoNormal">Hello!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Yesterday I made some tests transferring a zone with 50mio RRs to 35 Secondaries. I measured the time between:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Primary logs "zone test/IN: sending notifies"<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Primary logs "client xxxx: transfer of 'test/IN': AXFR-style IXFR ended"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">What makes we wonder is, that for several secondaries the XFR duration is equally fast although these secondaries are globally distributed with different RTTs and different VMs:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">173 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">173 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">404 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">405 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">609 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">620 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">622 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">638 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">838 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">838 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">839 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">839 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">843 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">848 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">859 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1031 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1032 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1032 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1035 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1037 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1038 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1038 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1038 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1043 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1702 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2359 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2361 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2361 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2361 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2361 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2361 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2361 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2361 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2361 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2362 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">For example, there are 8 secondaries (Mumbai, LosAngeles, Melbourne, Atlante, SaoPaulo...) to which the XFR took 2361 seconds.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Are there some mechanisms in Bind that put multiple XFRs together into a common stream? Or do you have any other ideas how it come that several XFRs are equally fast?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Klaus<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-- <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Klaus Darilion, Head of Operations<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">nic.at GmbH, Jakob-Haringer-Straße 8/V<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">5020 Salzburg, Austria<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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