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<p class="MsoNormal">Ok got it. Thank you.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Ankush<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Sun, Austin <austin.sun@intel.com> <br/>
<b>Sent:</b> Thursday, September 24, 2020 1:06 PM<br/>
<b>To:</b> Rai, Ankush <Ankush.Rai@commscope.com>; Penney, Don <Don.Penney@windriver.com>; starlingx-discuss@lists.starlingx.io<br/>
<b>Subject:</b> RE: how to get rt-kernel support ?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-line-height-alt:.75pt;background:white"><!--removed inky banner--></p></div><p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi Ankush:<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:10.2pt">You can check doc [1] , select ‘All-in-one (lowlatency) Controller’ for lowlatency , this is same all release r3 , r4 changes, if you want to use Simplex or Duplex system .
<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:10.2pt"><o:p> </o:p></p>
<p class="MsoNormal" style="text-indent:10.2pt">For multi Nodes setup , only worker nodes support low-latency.
<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:10.2pt"><o:p> </o:p></p>
<p class="MsoNormal" style="text-indent:10.2pt">There is no pre-requirement for a node to be a low-latency node .
<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:10.2pt"><o:p> </o:p></p>
<p class="MsoNormal" style="text-indent:10.2pt">I this there is no way to change node to low-latency node after installation except re-install.
<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:10.2pt"><o:p> </o:p></p>
<p class="MsoNormal" style="text-indent:10.2pt">[1] <a href="https://secure-web.cisco.com/1P4lnGQbHlM1HIlE29G9CN0yO0If-oZP8LGQLudF6pIycDVerD5Pa5mxdMwrRwnRy7gL2M3W7kta_m3f0Rpf5zJJwvavGxlEmT4ZEwBwrVgSOJF3r-5UptXhTYpIcHZGhs7pTL3l-etbvilDo5rSBtH9XqdsyonBakzpmmy0RlGFiDtvKDIKMTrmIuoLghnZdm9RombUdk1VHek3ME5BRzcxbrkhUCRRtb7SdWGcHX-m-WECqobZdGNapaobEnjFepSoCal4UrMuDh81v8fbJ5Jsept6pZDK_oQ6qxuv7yU7yKGveZcnBHB1A6R98zcGU/https%3A%2F%2Fdocs.starlingx.io%2Fdeploy_install_guides%2Fr3_release%2Fbare_metal%2Faio_duplex_install_kubernetes.html">
https://docs.starlingx.io/deploy_install_guides/r3_release/bare_metal/aio_duplex_install_kubernetes.html</a>
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks.<o:p></o:p></p>
<p class="MsoNormal">BR<br/>
Austin Sun. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Rai, Ankush <<a href="mailto:Ankush.Rai@commscope.com">Ankush.Rai@commscope.com</a>>
<br/>
<b>Sent:</b> Thursday, September 24, 2020 11:42 AM<br/>
<b>To:</b> Penney, Don <<a href="mailto:Don.Penney@windriver.com">Don.Penney@windriver.com</a>>;
<a href="mailto:starlingx-discuss@lists.starlingx.io">starlingx-discuss@lists.starlingx.io</a><br/>
<b>Subject:</b> Re: [Starlingx-discuss] how to get rt-kernel support ?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style='font-size:10.0pt;font-family:"Courier New";color:black'>Thank you for your response to this query. But I am still not clear on this. Are you saying that, the kernel-rt RPM will get installed only for “lowlatency” nodes?<o:p></o:p></span></p>
<p class="MsoNormal"><span style='font-size:10.0pt;font-family:"Courier New";color:black'>If my understanding is correct then I have few more questions:<o:p></o:p></span></p>
<p class="MsoNormal"><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="color:black;margin-left:0in;mso-list:l0 level1 lfo3">
<span style='font-size:10.0pt;font-family:"Courier New"'>How can I set the node as “lowlatency” node? (Is there any documentation reference for this ?)<o:p></o:p></span></li><li class="MsoListParagraph" style="color:black;margin-left:0in;mso-list:l0 level1 lfo3">
<span style='font-size:10.0pt;font-family:"Courier New"'>Can I make the controller node as a low low-latency node or is it possible for only worker nodes ?<o:p></o:p></span></li><li class="MsoListParagraph" style="color:black;margin-left:0in;mso-list:l0 level1 lfo3">
<span style='font-size:10.0pt;font-family:"Courier New"'>What are the pre-requirement for a node to be a low-latency node ?<o:p></o:p></span></li><li class="MsoListParagraph" style="color:black;margin-bottom:12.0pt;margin-left:0in;mso-list:l0 level1 lfo3">
<span style='font-size:10.0pt;font-family:"Courier New"'>Post installation, is there a way to make a node as low-latency node ?<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p>
<p class="MsoNormal">I have All-in-one-Duplex mode of deployment, both having “controller” personality and “controller,worker” as subfunctions.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">capabilities | {u'stor_function': u'monitor', u'Personality': u'Controller-Active'}<o:p></o:p></p>
<p class="MsoNormal">capabilities | {u'stor_function': u'monitor', u'Personality': u'Controller-Standby'}<o:p></o:p></p>
<p class="MsoNormal">personality | controller<o:p></o:p></p>
<p class="MsoNormal">subfunctions | controller,worker <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Ankush<o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> Penney, Don <<a href="mailto:Don.Penney@windriver.com">Don.Penney@windriver.com</a>>
<br/>
<b>Sent:</b> Thursday, September 24, 2020 12:51 AM<br/>
<b>To:</b> Rai, Ankush <<a href="mailto:Ankush.Rai@commscope.com">Ankush.Rai@commscope.com</a>>;
<a href="mailto:starlingx-discuss@lists.starlingx.io">starlingx-discuss@lists.starlingx.io</a><br/>
<b>Subject:</b> RE: how to get rt-kernel support ?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p>
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<p class="MsoNormal">The kernel-rt RPM is installed on the “lowlatency” nodes. For AIO, you’d want to install AIO-lowlatency.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Rai, Ankush <<a href="mailto:Ankush.Rai@commscope.com">Ankush.Rai@commscope.com</a>>
<br/>
<b>Sent:</b> Wednesday, September 23, 2020 3:05 PM<br/>
<b>To:</b> <a href="mailto:starlingx-discuss@lists.starlingx.io">starlingx-discuss@lists.starlingx.io</a><br/>
<b>Subject:</b> [Starlingx-discuss] how to get rt-kernel support ?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I couldn’t find the rpm for rt-kernel. Is starlingx comes up with rt-kernel support or it need to be patched ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any pointer to get the rt-kernel support ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">software_version | 20.06<o:p></o:p></p>
<p class="MsoNormal">I am using the latest green image: <a href="http://secure-web.cisco.com/1XaBjIrnsla4yw1swS70D-c4YZi3Gwk3fVlMFfZ8kh2jZoeRyWzfjNtCFudYq_klY9V9Ich822XL2RhcKfuhEage23YzuYyRTEpvehrwknKUOg5mbD5Ci5S6rRANn9WYVS0S7I0kOJD1ErxSKWnPtDeLaYwfxmosv_umFY7x1CgyjeHfO-ENsQk8bUV-_BYXS6cPUqwoeS3XGYVpYtFugRR12uacP1I3x8eX9b2TfrhKVzL9H01z0Y_2V3WGHIqzJtD_WmfTzssYX1NFL4EP4vXW3o3cZDjXxMkH_HLxFz-JXWauMnPwANk4bpGe92t1q/http%3A%2F%2Fmirror.starlingx.cengn.ca%2Fmirror%2Fstarlingx%2Fmaster%2Fcentos%2Flatest_green_build%2Foutputs%2Fiso%2Fbootimage.iso">
http://mirror.starlingx.cengn.ca/mirror/starlingx/master/centos/latest_green_build/outputs/iso/bootimage.iso</a><o:p></o:p></p>
<p class="MsoNormal">Required rt-kernel patch: kernel-rt-3.10.0-693.2.2.rt56.623.el7.x86_64<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Ankush<o:p></o:p></p>
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