Hi Disheng and George,
Disheng, I'm glad to see your work.
George Dunlap wrote:
I'd be interested to hear others' opinions.
I think that static priority is useful under some conditions.
But, as George said, I also think it is harder to configure properly.
And I'm anxious that it makes credits on non-RT vcpu meaningless.
I tested your patch in following environment.
CPU: Intel Core2 Quad Q9450
Chipset: Intel 82Q35
VM: dom0 (4 vcpus), HVM (4 vcpus)
Xen: c/s 19426
HVM:
RT priority (1)
pass-through devcies
PCI graphic board
Integrated devices(audio, USB controller)
playing video
With this configuration, HVM does not work well.
When HVM does not have RT priority, HVM works well.
I think we would need to consider the relationship between static
priority and credit, handling of dom0 and driver domain, and so on.
Best regards,
Naoki Nishiguchi
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