Re: [Xen-users] my first XEN Installation I need some advice

["Fajar A. Nugraha" <fajar@xxxxxxxxx>]

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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