Re: AlacrityVM benchmark numbers updated

From: Gregory Haskins
Date: Wed Aug 26 2009 - 16:06:13 EST

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.


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