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Re: [Xen-users] Changing CPUs-per-socket (Xen config file)?

  • To: PattiMichelle <miche1@xxxxxxxxxxxxx>
  • From: "Andrew Lyon" <andrew.lyon@xxxxxxxxx>
  • Date: Thu, 18 Dec 2008 11:04:33 +0000
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 18 Dec 2008 03:05:16 -0800
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

On Tue, Nov 18, 2008 at 3:40 PM, PattiMichelle <miche1@xxxxxxxxxxxxx> wrote:
> Hello:
> I'm looking for where to change the setting for the number of CPUs per
> socket in Xen (openSuSE11.0 x86_64).  I have a 32-processor machine (8
> quad-core opterons) and was told on bugzilla:
> "By default, xen exposes virtual CPUs as sockets as opposed to cores. w2k3
> EE only supports 8 sockets.
> You can edit your config file cpuid stanza to effectively set the number of
> cores per socket."
> I have Win2003Server Enterprise edition which I have verified will use at
> least 16 cores, but so far sees only 8 under Xen, irrespective of the
> setting I make in the KDE Xen VM manager applet.  Can anyone help me?  I
> don't know which config file this is referring to and what settings to make
> in the cpuid stanza.  I need to tell Xen to use between 2 and 4 cores per
> socket.
> THANKS!!!!!!!!!!!!!!!
> patti
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> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

This setting will expose 8 core cpu's to the vm:


Requires Xen 3.4.


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