Here are 3dmark scores for my Sapphire
AMD Radeon HD 6450 in *bare-metal* Windows 8.1 operating system.
http://www.3dmark.com/3dm/3996885
As you can observe, there is *substantial* performance degradation
for my AMD Radeon HD 6450 display card in Windows 7 Ultimate HVM
domU (VGA Passthrough) as compared to 3dmark scores in
*bare-metal* Windows 8.1 OS. We can conclude that the performance
of AMD Radeon HD 6450 in VGA Passthrough is not even near-native.
Can the developers do something about this?
Thank you very much.
--
Yours sincerely,
Teo En Ming
Singapore
On 09/09/2014 01:17, Teo En Ming wrote:
These are my 3dmark scores for my
Sapphire AMD Radeon HD 6450 (Xen VGA Passthrough) in Windows 7
Ultimate 64-bit HVM domU.
http://www.3dmark.com/3dm/3995208
--
Yours sincerely,
Teo En Ming
Singapore
On 09/09/2014 00:05, Teo En Ming wrote:
Hi,
I can complete all the 3dmark basic edition v1.3.708 tests in Windows 7 Ultimate HVM domU but I cannot complete all the 3dmark tests in Windows 8 HVM domU. In Windows 8 HVM domU, the screen would turn blank at the Sky Diver demo.
However, I can complete all the 3dmark basic edition tests in *bare-metal* Windows 8.1 OS. Should I upgrade my pure Windows 8 HVM domU to Windows 8.1? After upgrading, will Windows 8.1 HVM domU be able to complete all the 3dmark basic edition tests?
What could the problem be?
--
Yours sincerely,
Teo En Ming
Singapore
On 07/09/2014 03:50, Teo En Ming wrote:
I have rebooted Windows 8 HVM
domU a few times, and the artifacts in Youtube videos did
not come back.
Now there's yet another problem. I have installed 3dmark
version 1.3.708 in Windows 8 HVM domU. When I tried to run
all the tests, the screen would turn blank at the Sky Diver
demo. The screen would remain blank forever until I
destroyed Windows 8 HVM domU (sudo xl destroy <domain
id>) and restarted Windows 8 HVM domU (sudo xl create
/etc/xen/win8.cfg).
What could be the problem? I have executed 3dmark twice, and
the screen would turn blank twice at the Sky Diver demo. In
short, I couldn't complete all the 3dmark tests.
--
Yours sincerely,
Teo En Ming
Singapore
On 07/09/2014 00:45, Teo En Ming wrote:
Hi,
I started Windows 8 HVM domU on a fresh boot of dom0, the
artifacts in Youtube videos disappeared.
--
Yours sincerely,
Teo En Ming
Singapore
On 06/09/2014 20:07, Robert Rust wrote:
Teo -
It is my understanding that if the physical machine
(dom0) is rebooted, then the graphics in the DomU will
be back to normal. I won't dive into too far into the
technical reasons for this (perhaps someone else can
go into detail if you like... something to do with FLR
support?), but basically a DomU reboot doesn't reset
the video card properly for another OS session.
I have the same 6450 card in my Xen 4.4 system and
the same thing happens with a Ubuntu Linux DomU,
though the artifacts show up in more than just YouTube
videos. It does seem to get worse with every reboot
until the physical host is rebooted.
-Robert
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