This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] Xen max supported memory per guest VM?

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Xen max supported memory per guest VM?
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Sat, 14 Aug 2010 22:46:10 +0100
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Sat, 14 Aug 2010 14:47:08 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20100814213019.GX2804@xxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: Acs797rKQffRcF2aSCeM3yD5o1mHBAAAmC+H
Thread-topic: [Xen-devel] Xen max supported memory per guest VM?
User-agent: Microsoft-Entourage/
On 14/08/2010 22:30, "Pasi Kärkkäinen" <pasik@xxxxxx> wrote:

>>> In http://wiki.xensource.com/xenwiki/Xen4.0 we mention the following:
>>> "Better performance and scalability: 128 vcpus per guest, 1 TB of RAM per
>>> host, 128 physical CPUs per host (as a default, can be compile-time
>>> increased
>>> to lots more)."
>>> But what's the max supported amount of memory for a (64bit) guest?
>> Allocating the whole 1TB should work. It's unlikely to have been tested
>> though.
> Ok. I guess it might also have a difference if it's a PV or HVM guest..

I can't think of a reason we'd be limited to less for HVM or PV.

 -- Keir

Xen-devel mailing list