<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 9, 2016 at 12:10 PM, Nathanaël Blanchet <span dir="ltr"><<a href="mailto:blanchet@abes.fr" target="_blank">blanchet@abes.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi all,<br>
<br>
I manage several hosts with different CPU type and I was wondering about good practices to create a cluster in ovirt.<br>
<br>
I usually choose the lowest level to gather my hosts, Sandy Bridge seems to be good. Is there for instance some performance advantage to create a cluster per CPU type?<br>
<br>
I mean, if i decide to create an independant cluster with the Broadwell family, what kind of advantage could this stuff bring to me? I know I couldn't force live migrate my guests to a lower CPU type cluster, so advantage must be greater than disadvantage.<br></blockquote><div><br></div><div>It means more CPU features from the host are exposed to the guest. If it takes advantage of them is up to the guest and the applications within it.</div><div>For example, with Broadwell, you can get all the CPU features that are in[1].</div><div><br></div><div>Y.</div><div><br></div><div>[1] <a href="http://libvirt.org/git/?p=libvirt.git;a=blob;f=src/cpu/cpu_map.xml;h=6da8321a69681e7a78ade6b7c5c9c871813bd5d8;hb=HEAD#l1126">http://libvirt.org/git/?p=libvirt.git;a=blob;f=src/cpu/cpu_map.xml;h=6da8321a69681e7a78ade6b7c5c9c871813bd5d8;hb=HEAD#l1126</a> </div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
thank you for help.<br>
<br>
-- <br>
Nathanaël Blanchet<br>
<br>
Supervision réseau<br>
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