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<body class='hmmessage'><div dir='ltr'>While that particular DocWiki does suggest that it is no longer needed to disable Large Receive Offset on ESXi 4.1 with CUCUM 8.6 and above; you should also note that one of the specific issues having LRO on can cause is consistent CPU pegging for the UCOS guests (wouldn't be the first time something didn't work the way Cisco's docs say it should).<br><br>Please also review: <a href="https://supportforums.cisco.com/document/95886/disable-lro-ucs-uc-application-deployments" target="_blank">https://supportforums.cisco.com/document/95886/disable-lro-ucs-uc-application-deployments</a> Again, I can't say beyond a shadow of doubt that this is the issue anymore than anyone can say that it isn't.<br><br>I would also look into the RAID drivers as well as all the physical connections on the UCS boxes.<br><br>Thanks,<br><br>rh<br><div><hr id="stopSpelling">From: wokka@justfamily.org<br>Date: Mon, 17 Nov 2014 14:30:21 -0700<br>Subject: Re: [cisco-voip] VMware 5.5<br>To: ryanhuff@outlook.com<br>CC: ms@bilobit.com; james.buchanan2@gmail.com; cisco-voip@puck.nether.net<br><br><div dir="ltr">That page specifically says you don't have to disable LRO if you are above 4.1 esxi with8.6 CUCM.<div><br></div><div>Martin, which version of 5.5 are you on? GA, update 1 or 2? I recently ran into an issue with a customer on 5.5 u1 and too new of raid drivers on the card and had to downgrade the drivers. Wasn't causing 100% cpu, but very slow drive access times.</div><div><br></div><div>So checked your vmware version and compatibility on the hardware you are running.</div></div><div class="ecxgmail_extra"><br><div class="ecxgmail_quote">On Mon, Nov 17, 2014 at 11:59 AM, Ryan Huff <span dir="ltr"><<a href="mailto:ryanhuff@outlook.com" target="_blank">ryanhuff@outlook.com</a>></span> wrote:<br><blockquote class="ecxgmail_quote" style="border-left:1px #ccc solid;padding-left:1ex;">
<div><div dir="ltr"><font style="font-size:12pt;" face="Calibri" size="3"><span style="font-size:12pt;"><span dir="ltr">Martin,<br>
<br>
Have you disabled Large Receive Offset (LRO) on all the Elastic Sky hosts? <a href="http://docwiki.cisco.com/wiki/Disable_LRO" target="_blank">http://docwiki.cisco.com/wiki/Disable_LRO</a><span><br>
<br>
Thanks,<br>
<br>
Ryan Huff<br>
CCIE Collaboration (Written), CCNP Voice, CCNA Voice,<br>
CCNA Route & Switch, CCNA Wireless<br>
UCCX Specialist</span></span></span></font><br><br><div><hr>From: <a href="mailto:ms@bilobit.com" target="_blank">ms@bilobit.com</a><br>To: <a href="mailto:james.buchanan2@gmail.com" target="_blank">james.buchanan2@gmail.com</a><br>Date: Mon, 17 Nov 2014 18:06:51 +0000<br>CC: <a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><div><div class="h5"><br>Subject: Re: [cisco-voip] VMware 5.5<br><br>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";" lang="EN-US">So 5.5 is supported with CUCM 9.1.x
</span><BR>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";" lang="EN-US"> </span><BR>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";" lang="EN-US">So the question is: Why do I have CUCM at 100% CPU? Only hard reset helps at this point.</span><BR>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";" lang="EN-US"> </span><BR>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";" lang="EN-US">Thanks, Martin</span><BR>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";" lang="EN-US"> </span><BR>
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<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";"> James Buchanan [mailto:<a href="mailto:james.buchanan2@gmail.com" target="_blank">james.buchanan2@gmail.com</a>]
<br>
<b>Sent:</b> Monday, November 17, 2014 1:10 PM<br>
<b>To:</b> Martin Schmuker<br>
<b>Cc:</b> Cisco VoIP Mailing List<br>
<b>Subject:</b> Re: [cisco-voip] VMware 5.5</span><BR>
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Hello,<br>
<br>
Whenever you are looking for answers on UC virtualization, look here: <a href="http://docwiki.cisco.com/wiki/Virtualization_for_Cisco_Unified_Communications_Manager_%28CUCM%29" target="_blank">
http://docwiki.cisco.com/wiki/Virtualization_for_Cisco_Unified_Communications_Manager_%28CUCM%29</a><br>
<br>
Thanks,<br>
James<BR>
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On Mon, Nov 17, 2014 at 5:36 AM, Martin Schmuker <<a href="mailto:ms@bilobit.com" target="_blank">ms@bilobit.com</a>> wrote:<BR>
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Guys,<BR>
<BR>
<span lang="EN-US">since 3 weeks we are running our UC Environment (CUCM, Unity Cxn, IM&P) on ESXi 5.5. At Friday we setup new vCenter 5.5 and added the esx hosts.</span><BR>
<span lang="EN-US"> </span><BR>
<span lang="EN-US">Since saturday, all machines are stuck in 100% CPU after a few hours. Sometimes all machines at the *<b>same</b>* time! They don’t reply Ping (ICMP Echo), and
CPU is at 100%.</span><BR>
<span lang="EN-US"> </span><BR>
<span lang="EN-US">CUCM and Cxn are on 9.1(2)SU2a (9.1.2.12901-3).</span><BR>
<span lang="EN-US"> </span><BR>
<span lang="EN-US">Someone has any idea? Is 9.1.x not supported on vSphere 5.5?</span><BR>
<span lang="EN-US"> </span><BR>
<span lang="EN-US">Thanks, Martin</span><BR>
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