From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: Query regarding Xen - Assigning more than 1 VCPUs to Dom0 Date: Fri, 16 Mar 2012 11:47:51 -0400 Message-ID: <20120316154751.GA31099@phenom.dumpdata.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline 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: Mohit Dhingra Cc: xen-devel@lists.xensource.com, xen-users@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Thu, Mar 08, 2012 at 07:16:25PM +0530, Mohit Dhingra wrote: > *Hi Xen-users,* > > I have a doubt regarding assigning VCPUs to Dom0 and DomUs, Please give me > some pointers to sort them out. > > 1. I have assigned one VCPU to Dom0 ( by (dom0-cpus 1) in xend-config.sxp > ), it works fine. > cadlab:/srv/cloud/one # xm list > Name ID Mem VCPUs State > Time(s) > Domain-0 0 3964 1 r----- > 203993.1 > one-5 2 1024 1 -b---- > 10241.9 > one-6 4 1024 1 -b---- > 3970.8 > one-7 1 1024 1 -b---- > 4052.7 > one-8 3 1024 1 --p--- > 2246.7 > > cadlab:/srv/cloud/one # xm vcpu-list > Name ID VCPU CPU State Time(s) CPU > Affinity > Domain-0 0 0 6 r-- 203985.6 6 > Domain-0 0 1 - --p 1.7 7 > Domain-0 0 2 - --p 1.6 any cpu > Domain-0 0 3 - --p 2.3 any cpu > Domain-0 0 4 - --p 1.3 any cpu > Domain-0 0 5 - --p 1.2 any cpu > Domain-0 0 6 - --p 1.5 any cpu > Domain-0 0 7 - --p 1.7 any cpu > one-5 2 0 2 -b- 10241.9 2 > one-6 4 0 4 -b- 3970.8 4 > one-7 1 0 5 -b- 4052.7 5 > one-8 3 0 3 --- 2246.7 3 > > > But when I assign 2 VCPUs to Dom0, it gives me following error: ( by > (dom0-cpus 2) in xend-config.sxp ) > cadlab:/srv/cloud/one # xm list > Error: Unable to connect to xend: Connection refused. Is xend running? What version of Xen? What version of Linux? Have you tried 'xl' instead? > > I want to pin Dom0 to 2 VCPUs. When I do that by providing (dom0-cpus 0 ) > and pinning 2 of the cores to 2 VCPUs ( by xm vcpu-pin), it doesn't seem to > use the other core. > > Also, My system is Intel i7 950, which is quad core, but it shows 8 CPUs > probably because of hyperthreading. How should I disable it? > > * > ---------------------------- > Thanks & Regards > Mohit Dhingra > +919611190435* > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel