This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


RE: [Xen-users] Xen 3.3.1 Windows HVM Disk I/O -> domU and dom0 hangs

To: "Philipp Schmid" <lists@xxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Xen 3.3.1 Windows HVM Disk I/O -> domU and dom0 hangs
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Fri, 13 Feb 2009 11:01:17 +1100
Delivery-date: Thu, 12 Feb 2009 16:02:16 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <7F5C6F8E-4437-43F1-A745-054FE94AB30C@xxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <7F5C6F8E-4437-43F1-A745-054FE94AB30C@xxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcmNX+qcWPlJvy/+QTuG5McAdPLp2gADjKCA
Thread-topic: [Xen-users] Xen 3.3.1 Windows HVM Disk I/O -> domU and dom0 hangs
> Hi,
> we are currently working on getting windows working on your xen
> but we are facing a severe problem where dom0 and all domus hang for
> 1-5 seconds from time to time.
> we think it is probably because of disk i/o, because top sometimes
> says 100% wa (waiting on io) during the hang.
> dom0 has cpu 0 for exclusive use and the windows vms use cpu 1 to 7.
> should we give dom0 more than once cpu?
> would this prevent the hang?
> or is this a configuration error?
> are there some scheduler settings we could experience with (linux
> kernel i/o scheduler?)
> we use LVM for HVM domUs on a 6 disk raid 10 array.

What hardware and what RAID controller?

I had awful problems with a low end (E200 I think) HP RAID adapter.


Xen-users mailing list