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<p>no, that's not my question.</p>
<p>I'm already overcommiting, but now need to prioritize one instance above others in terms of perfomance.<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>От:</b> Eugene Nikanorov <enikanorov@mirantis.com><br>
<b>Отправлено:</b> 12 января 2017 г. 1:13:27<br>
<b>Кому:</b> Ivan Derbenev; openstack@lists.openstack.org<br>
<b>Тема:</b> Re: [Openstack] Openstack+KVM+overcommit, VM priority</font>
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<div dir="ltr">Ivan,
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<div>see if it provides an answer: <a href="https://ask.openstack.org/en/question/55307/overcommitting-value-in-novaconf/">https://ask.openstack.org/en/question/55307/overcommitting-value-in-novaconf/</a>
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<div>Regards,</div>
<div>Eugene.</div>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Jan 11, 2017 at 1:55 PM, James Downs <span dir="ltr">
<<a href="mailto:egon@egon.cc" target="_blank">egon@egon.cc</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<span class="">On Wed, Jan 11, 2017 at 09:34:32PM +0000, Ivan Derbenev wrote:<br>
<br>
> if both vms start using all 64gb memory, both of them start using swap<br>
<br>
</span>Don't overcommit RAM.<br>
<span class=""><br>
> So, the question is - is it possible to prioritize 1st vm above 2nd? so the second one will fail before the 1st, to leave maximum possible perfomance to the most importan one?<br>
<br>
</span>Do you mean CPU prioritization? There are facilities to allow one VM or<br>
another to have CPU priority, but what, if a high priority VM wants RAM,<br>
you want to OOM the other? That doesn't exist, AFAIK.<br>
<br>
Cheers,<br>
-j<br>
<br>
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