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-users] Re: Xen-users Digest, Vol 11, Issue 53

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Re: Xen-users Digest, Vol 11, Issue 53
From: Goetz Bock <bock@xxxxxxxxxxx>
Date: Mon, 9 Jan 2006 13:15:48 +0100
Delivery-date: Mon, 09 Jan 2006 12:25:22 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <43C24FA3.5040609@xxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Mail-followup-to: Goetz Bock <bock@xxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
References: <E1Evvh4-0000BD-TL@host-192-168-0-1-bcn-london> <43C24FA3.5040609@xxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.4.2i
On Mon, Jan 09 '06 at 12:57, Jean-Eric Cuendet wrote:
> > The Hypervisor runes above (or below) the kernel (debending on how you
> > view the layers in the whole sytem). But to work the Xen-Kernel NEEDS
> > services the hypervisor provides. Without a hypervisor the xen-kernel
> > will not boot.
> Do you mean xend? 
> Or the in-kernel hypervisor?
There is no in-kernel hypervisor. As I said the hypervisor runs above
the kernel. It's completely seperated from the kernel. Actually there
are 3.5 completely different "kernels" that can be run using the Xen
hypervisor: linux 2.4, linux 2.6, freeBSD, openSolaris. With Xen3 only
linux 2.6 is useable right now, but the rest is forthcomming.

> In either case, will it impact the performance if it is not used? (No 
> active virtual machines, only a dom0 kernel)
Just test it with your workload. For me it's measureable, but
irrelevant. I'm using xen because I want the features and if I don't
need the features than I stick with my distributions stock kernel.
Goetz Bock       (c) 2006 as     blacknet.de - Munich - Germany   /"\
IT Consultant  Creative Commons  secure mobile Linux everNETting  \ /
 ASCII Ribbon Campaign against HTML email & microsoft attachments / \

Xen-users mailing list

<Prev in Thread] Current Thread [Next in Thread>