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Re: [Xen-devel] Fwd: System partitioning question

It doesn't matter - any VM can run on any CPU core and none require a dedicated CPU core. If your application is such that you are concerned about latency, the chances are that no virtualization solution is going to be good enough. Otherwise don't worry about it.


On 10/27/2013 10:40 AM, Mj Embd wrote:
In my use case VM;s don't have any physical device, all are owned by dom0.
[keyboard, network] I am planning vnc to view the ubuntu's running in VM's
So I have to pin 1st core for dom0 and on second core my actual VM's
would  run ?
Would you think it would be a feasible solution in terms of latency ?

On Sun, Oct 27, 2013 at 3:03 PM, Gordan Bobic <gordan@xxxxxxxxxx> wrote:
On 10/27/2013 09:17 AM, Mj Embd wrote:

I have dual core ARM v7 ve system. I am trying to run xen on it.
  From a conceptual level if I have to run 2 os (VM) on xen, then in
effect there would 3 VMs running
2 guest os's for my purpose and the dom0.

How would 3 VM's run on two cores ?
Is it possible to affine cores in xen ?

If it is anything like x86, then you can overbook cores - Xen will manage
what gets to run fairly. You can also specify how many cores you want dom0
to use and pin them, as well as specifying how many and which cores domU
should run on.


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