Jean-Eric Cuendet
2006-Jan-09 11:57 UTC
[Xen-users] Re: Xen-users Digest, Vol 11, Issue 53
> 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? In either case, will it impact the performance if it is not used? (No active virtual machines, only a dom0 kernel) -jec _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
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?No> 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 \ / X ASCII Ribbon Campaign against HTML email & microsoft attachments / \ _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users