[9fans] Xen4 status

[Nicolas Bercher]

Can anyone confirm that Plan 9 runs well under Xen4 ?

The only information I found about that is here:


http://rpm.pbone.net/index.php3/stat/4/idpl/18540414/dir/opensuse/com/xen-4.0.3_04-45.1.i586.rpm.html

But I'm not sure this isn't a copy-paste of the Xen3 package
description!

Thanks,
Nicolas

[ron minnich]

if you're running xen you're almost certainly using a linux in dom0.
Given that, kvm is usually a better bet.

ron

[ron minnich]

Yes, starting about 5 years ago people began to move to KVM for many
reasons. And some very smart people have made it very very fast.

If you run 9front, you can take advantage of its virtio drivers, and
use the kvm tool instead of qemu. That's a big win right there. But
qemu+kvm is quite good in any event.

ron

[Nicolas Bercher]

Post by ron minnich
if you're running xen you're almost certainly using a linux in dom0.
Given that, kvm is usually a better bet.

Right, dom0 is a Xen3 Debian.

OK, but that's strange, I read the opposite advice from you and Eric
Van Hensbergen : http://9fans.net/archive/2007/04/152

OK, it's 5 years old... I wasn't aware that qemu/kvm did such
progresses... what make this huge difference?

On the other hand, since 2009, I tried a lot Plan 9 over qemu+kqemu,
then switched to kvm (Intel vmx). Even if I didn't quantified the
benefits of Xen3, I really felt it gave me best perfs for both disk
access (fossil+venti) and when running as a terminal (graphics).

But kvm is to me far more simpler to setup (no dom0) and run.

Nicolas