On 16/06/2015 09:55, "Gray, Mark D" <mark.d.g...@intel.com> wrote:

>> 
>
>> Acked-by: Ethan Jackson <et...@nicira.com>
>
>> 
>
>> One question I had for a future patch.  Have you considered prefetching
>
>> more packets at once?  I.E. 4 at a time or something?
>
>> That's how these things are typically written, though I don't know if
>>it would
>
>> actually affect things.
>
>
>
>yeah, I was going to suggest the same thing. In most DPDK apps, we would
>
>prefetch about 3.

I've very briefly trying to do something more sophisticated, but I didn't
manage to get any significant improvement.

I just posted this because it's a simple 5 lines change that removes an
easy
bottleneck.

I definitely agree that it might be worth to work more on that code in
the future to squeeze more pps. 

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