From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Daniel P. Berrange" Subject: Re: Supported #of CPUs/VMs per CPUs Date: Mon, 18 Sep 2006 13:17:05 +0100 Message-ID: <20060918121705.GD25730@redhat.com> References: <6329630.post@talk.nabble.com> Reply-To: "Daniel P. Berrange" Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: whit , xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Mon, Sep 18, 2006 at 10:22:57AM +0100, Keir Fraser wrote: > On 15/9/06 18:18, "whit" wrote: > > > Can find documented how many CPUS can Xen support and how many Virtual > > Machines per CPU are allowed? Can someone please supply this info? > > Xen supports up to 32 CPUs on a 32-bit system, or 64 CPUs (by default) on a > 64-bit system. Guests can have up to 32 virtual CPUs. The only limit to > number of domains is amount of hardware resource (mainly memory) that you > have to share. Are these hard limits, or just the kernel config defaults for Xen kernels ? Any reason the guest VCPU count is limited to less than the physical number on x86_64 ? (not that I expect much demand for 64 CPU guests) Regards, Dan. -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|