I've got HVM GPLPV and nonGPLPV based hosts running in XEN, and they work great
- all block-device backed. I also only use Debian for Dom0 because the package
is good and I know Debian better than anything else.
I've totally eliminated Hyper-V, as it's been far too slow. I do have some
Virtuozzo stuff for the native-performance virtualization, but the license
isn't free which means I'm picky about what I used it for. :)
Best Regards
Nathan Eisenberg
Sr. Systems Administrator
Atlas Networks, LLC
support@xxxxxxxxxxxxxxxx
http://support.atlasnetworks.us/portal
-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Fajar A. Nugraha
Sent: Thursday, May 28, 2009 10:10 AM
To: Xen User-List
Subject: Re: [Xen-users] my first XEN Installation I need some advice
On Thu, May 28, 2009 at 11:46 PM, Nathan Eisenberg
<nathan@xxxxxxxxxxxxxxxx> wrote:
> I've had huge issues with Hyper-V's performance in production. The blockIO
> layer is significantly worse than vanilla HVM in Xen.
Really? Even with windows 2008 guests?
If it's THAT slower, then I can tell you this much : you'll be happy
using Xen IF you :
- use block-device (disk, partition, LVM, zvols, etc.) as domU
storage, and not file-backed (raw, qcow, vmdk, etc.)
- you install GPLPV
It should give at least twice the I/O performance of vanilla HVM for
Windows guests.
Also note that last time I check using 1 CPU for domU yields higer I/O
performance compared to SMP, so if your domU is I/O intensive you
might want to stick with 1 CPU.
As for dom0 distro I'm using RHEL5.3 (Centos should be the same), with
xen rpms from http://www.gitco.de/repo/ (if I need to use the latest
Xen version). They've been stable, and easy to install and manage.
--
Fajar
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