Re: AlacrityVM benchmark numbers updated

[Gregory Haskins]

Avi Kivity wrote:
> On 08/26/2009 09:42 PM, Gregory Haskins wrote:
>> Actually, I have already look at this and it does indeed seem better to
>> use switch_mm+gupf() over gup() by quite a large margin.  You could then
>> couple that with your DMA-engine idea to potentially gain even more
>> benefits (though probably not for networking since most NICs have their
>> own DMA engine anyway).
>>
>>    
> 
> For tx, we'll just go copyless once we plumb the destructors properly. 
> But for rx on a shared interface it is impossible to avoid the copy. 
> You can only choose if you want it done by the cpu or a local dma engine.
> 
> 

Yep, agree on both counts.

-Greg

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