[Oneiric-Topic] Revisit Xen support

Clint Byrum clint at ubuntu.com
Sun Apr 3 06:15:48 UTC 2011

Excerpts from Clint Byrum's message of Fri Apr 01 16:51:04 -0700 2011:
> Excerpts from Chuck Short's message of Wed Mar 30 07:27:50 -0700 2011:
> > Hi,
> > 
> > In the past Xen support in Ubuntu as a host has been difficult for a
> > variety of reasons most notably no upstream kernel support. Now that
> > dom0 should be coming into the vanilla kernel soon. I think its time to
> > revisit supporting Xen as a hypervisor as well.
> Just playing devil's advocate here.
> Other than people already having familiarity with Xen, what is a
> compelling reason to support it in favor of, or in addition to, KVM?

Really awesome feedback guys, and thanks for putting up with my "tire
kicking" on this idea.

So what I'm reading is that KVM should be good once hardware catches
up with it. Xen takes advantage of older hardware more effectively,
and may also have a better I/O system.

Not one person has stood up and said that KVM blows Xen away, or is even

I have very little operational experience with either.. having had my
website and IMAP server on a Xen domU running CentOS 5 for a few years,
I can say that it is "fine" for the lightweight work of a wordpress blog
and courier-imap.

So, with all of that said, and xen dom0 support coming to the vanilla
kernel, it sounds like a slam dunk for Ubuntu to raise xen to first
class status.

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