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[Xen-devel] [Xen VGA Passthrough] Performance of AMD Radeon HD 6450 in Windows 7 HVM domU Poorer Than in Bare-Metal Windows 8.1 OS



Hi,

I have got VGA Passthrough working with AMD Radeon HD 6450.

However, the performance of AMD Radeon HD 6450 in Windows 7 HVM domU is poorer than in bare-metal Windows 8.1 operating system. Please refer to the 3dmark basic edition 1.3.708 scores for AMD Radeon HD 6450 in both Windows 7 HVM domU and bare-metal Windows 8.1.

3dmark scores for Windows 7 HVM domU:

http://www.3dmark.com/3dm/3995208

3dmark scores for bare-metal Windows 8.1:

http://www.3dmark.com/3dm/3996885

Why is there such a great disparity in 3dmark scores for AMD Radeon HD 6450 in Windows 7 HVM domU and in bare-metal Windows 8.1?

The performance of AMD Radeon HD 6450 in Windows 7 HVM domU is not even near native.

Is it possible for developers to improve the performance of AMD Radeon HD 6450 in Windows HVM virtual machines?

Thank you very much.

--
Yours sincerely,

Teo En Ming
Singapore


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