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-devel] Just another PCI VGA passthru report

To: Pavel Matěja <pavel@xxxxxxxxxx>
Subject: Re: [Xen-devel] Just another PCI VGA passthru report
From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Date: Tue, 11 Jan 2011 12:42:53 -0500
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Tue, 11 Jan 2011 09:44:34 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <201101110901.47672.pavel@xxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <201101091441.17024.pavel@xxxxxxxxxx> <20110110143219.GB5019@xxxxxxxxxxxx> <201101110901.47672.pavel@xxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.20 (2009-06-14)
On Tue, Jan 11, 2011 at 09:01:47AM +0100, Pavel Matěja wrote:
> On Mon 10. of January 2011 15:32:19 you wrote:
> > > Some problems:
> > > Disk performance is poor even when I use gplpv drivers.
> > 
> > As in, about the same as HVM drivers?
> I'll measure some numbers for you today afternoon.
> > > I can't read valid CPU frequency from /proc/cpuinfo
> > 
> > This is in Dom0 I presume?
> Yes, Dom0 reports:
> cpu MHz         : 306230.313

Whoa. The timer is way off. Did you specify any specific timer clock
on the bootup line? Are you using the 4.0.1 or xen-unstable hypervisor?

> Same kernel running on baremetal (no load):
> cpu MHz         : 800.000
> > > I can't power computer off. It's working normaly when running non XEN
> > > kernel.

Hmm, that ought to work - unless you are using an older hypervisor.
> > 
> > Hmm, can you be more specific. Is it working when you boot the 
> > as baremetal?
> Same kernel booted as baremetal turns power off just fine.
> Last message from the kernel booted as dom0 is:
> ACPI: preparing to enter system sleep state S5
> Disabling non-boot CPUs.

Hmmmm.. That does work on my boxes, so I am surprised you see this. What
do you see on the Xen hypervisor serial line if you pass in 'sync_console 
You should see something from the (XEN): .. about ACPI shutdown.

Xen-devel mailing list