9:52 a.m.
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How do I assign a different processor type to an individual VM? (Sandy
Bridge, Conroe, etc)
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9:13 a.m.
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----- Original Message -----
From: "Maurice James" <midnightsteel(a)msn.com>
To: users(a)ovirt.org
Sent: Tuesday, March 18, 2014 4:52:01 PM
Subject: [Users] Processor Type
How do I assign a different processor type to an individual VM?
(Sandy
Bridge, Conroe, etc)
cpu name is cluster level, and usually the lowest common denominator of the hosts in
cluster,
to make sure migration works in the cluster.
so you can change for cluster, which will affect all vms in the cluster, not individual vm
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
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id="zwchr"><blockquote style="border-left:2px solid
#1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From:
</b>"Maurice James"
&lt;midnightsteel(a)msn.com&gt;<br><b>To:
</b>users(a)ovirt.org<br><b>Sent: </b>Tuesday, March 18, 2014
4:52:01 PM<br><b>Subject: </b>[Users] Processor
Type<br><div><br></div><style><!--
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class="MsoNormal" style="margin-top:12.0pt">How do I assign a
different processor type to an individual VM? (Sandy Bridge, Conroe,
etc)</p></div></blockquote><div>cpu name is cluster level, and
usually the lowest common denominator of the hosts in
cluster,<br></div><div>to make sure migration works in the
cluster.<br></div><div><br></div><div>so you can
change for cluster, which will affect all vms in the cluster, not individual
vm<br></div><blockquote style="border-left:2px solid
#1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;">_______________________________________________<br>Users
mailing
list<br>Users@ovirt.org<br>http://lists.ovirt.org/mailman/listinfo/users<br></blockquote><div><br></div></div></body></html>
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6:03 a.m.
On 03/19/2014 10:13 AM, Omer Frenkel wrote:
------------------------------------------------------------------------
*From: *"Maurice James" <midnightsteel(a)msn.com>
*To: *users(a)ovirt.org
*Sent: *Tuesday, March 18, 2014 4:52:01 PM
*Subject: *[Users] Processor Type
How do I assign a different processor type to an individual VM?
(Sandy Bridge, Conroe, etc)
cpu name is cluster level, and usually the lowest common denominator of
the hosts in cluster,
to make sure migration works in the cluster.
so you can change for cluster, which will affect all vms in the cluster,
not individual vm
but if you are willing to compromise on performance, compared to live
migration in the cluster, you can choose '-cpu host' for best match of
the VM to the CPU available on the host.
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
10:57 a.m.
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On Wed, 19 Mar 2014 10:13:28 -0400 (EDT) Omer wrote:
OF> cpu name is cluster level, and usually the lowest common denominator of
OF> the hosts in cluster, to make sure migration works in the cluster.=20
Is there and documentation on the relationship between cpu types and
compatibility? Right now I have a cluster per cpu type, and it might make
sense to merge some of them if the performance hit was minimal.
Robert
--
Senior Software Engineer @ Parsons
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10:32 a.m.
On 03/31/2014 06:57 PM, Robert Story wrote:
On Wed, 19 Mar 2014 10:13:28 -0400 (EDT) Omer wrote:
OF> cpu name is cluster level, and usually the lowest common denominator of
OF> the hosts in cluster, to make sure migration works in the cluster.
Is there and documentation on the relationship between cpu types and
compatibility? Right now I have a cluster per cpu type, and it might make
sense to merge some of them if the performance hit was minimal.
that would be a question for qemu-kvm - they provide the cpu models we
base this on.
you can check which cpu flags you get exposed in the guest of the higher
cpu model, then check if you think your applications would care about
them...
6:33 a.m.
The cpu model actually gets read from
a libvirt xml file.
Extensive documentation about this can be found here:
http://wiki.libvirt.org/page/Libvirt_identifies_host_processor_as_a_diffe...
HTH
Am 04.04.2014 17:32, schrieb Itamar Heim:
On 03/31/2014 06:57 PM, Robert Story wrote:
> On Wed, 19 Mar 2014 10:13:28 -0400 (EDT) Omer wrote:
> OF> cpu name is cluster level, and usually the lowest common
> denominator of
> OF> the hosts in cluster, to make sure migration works in the cluster.
>
> Is there and documentation on the relationship between cpu types and
> compatibility? Right now I have a cluster per cpu type, and it might make
> sense to merge some of them if the performance hit was minimal.
that would be a question for qemu-kvm - they provide the cpu models we
base this on.
you can check which cpu flags you get exposed in the guest of the higher
cpu model, then check if you think your applications would care about
them...
--
Mit freundlichen Grüßen / Regards
Sven Kieske
Systemadministrator
Mittwald CM Service GmbH & Co. KG
Königsberger Straße 6
32339 Espelkamp
T: +49-5772-293-100
F: +49-5772-293-333
https://www.mittwald.de
Geschäftsführer: Robert Meyer
St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen
Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen
4:10 p.m.
On 04/05/2014 02:33 PM, Sven Kieske wrote:
The cpu model actually gets read from
a libvirt xml file.
Extensive documentation about this can be found here:
http://wiki.libvirt.org/page/Libvirt_identifies_host_processor_as_a_diffe...
iirc, it is still a pass-through to qemu-kvm, which accepts -cpu
<cpu_model>.
HTH
Am 04.04.2014 17:32, schrieb Itamar Heim:
> On 03/31/2014 06:57 PM, Robert Story wrote:
>> On Wed, 19 Mar 2014 10:13:28 -0400 (EDT) Omer wrote:
>> OF> cpu name is cluster level, and usually the lowest common
>> denominator of
>> OF> the hosts in cluster, to make sure migration works in the cluster.
>>
>> Is there and documentation on the relationship between cpu types and
>> compatibility? Right now I have a cluster per cpu type, and it might make
>> sense to merge some of them if the performance hit was minimal.
>
> that would be a question for qemu-kvm - they provide the cpu models we
> base this on.
> you can check which cpu flags you get exposed in the guest of the higher
> cpu model, then check if you think your applications would care about
> them...
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Sven Kieske