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<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Hi Gilad & Einav<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Thanks for sharing your ideas about NUMA feature and CPU pinning.</span><span lang="EN-US"> It makes e</span><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">asier
for users to understand.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">And something I want to clarify:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo1">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">NUMA tuning feature and CPU pinning feature are individually in libvirt ( ovirt backend ).<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo1">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">User could configure VM CPU pining ( NUMA not included ) separately.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo1">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">When configuring NUMA feature, user should configure VM NUMA tuning ( pin to host NUMA node & tuning mode ) and VM CPU pinning ( NUMA included ), otherwise VM
will have low performance.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo1">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Single virtual NUMA node could pin to multiply host NUMA nodes.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo1">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">5.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Multiply virtual NUMA nodes could pin to single host NUMA node.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo1">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">6.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">NUMA tuning mode have default value ‘strict’, and could change to ‘prefer’, ‘interleave’<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Our proposal:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">OVirt 3.5<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-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Keep current UX design, add NUMA tuning mode select box in VM dialog.<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-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Keep current BE model, query and action command.<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-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Consider the low performance scene ( user did not configure VM CPU pinning )<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:0cm"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">When VdsBroker check the CPU pinning text is empty, then generate the right CPU pinning text from virtual NUMA nodes (
pin to host NUMA nodes )<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">The next version<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Remove current CPU pinning text feature.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Consider the NUMA node inside CPU pinning design. ( Should consider the individually CPU pining design not includes NUMA )<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Add related CPU pinning BE model, query and action command.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Turn off VdsBroker generate function.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif"">Do you agree ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"HP Simplified","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:9.0pt;font-family:"HP Simplified","sans-serif";color:black">Best Regards,<br>
</span></b><span lang="EN-US" style="font-size:9.0pt;font-family:"HP Simplified","sans-serif";color:#717172">Jason Liao</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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