From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gordan Bobic Subject: Re: Fwd: System partitioning question Date: Sun, 27 Oct 2013 19:27:28 +0000 Message-ID: <526D6920.7080708@bobich.net> References: <526CDDCF.8030306@bobich.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Mj Embd Cc: "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org 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. Gordan 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 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. >> >> Gordan >> > > >