Re: [PATCH net-next v2 0/9] xsk: improvement performance in copy mode

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On Tue, 26 Aug 2025 08:01:03 +0800 Jason Xing wrote:
> On Tue, Aug 26, 2025 at 1:44 AM Jakub Kicinski <kuba@xxxxxxxxxx> wrote:
> > On Mon, 25 Aug 2025 21:53:33 +0800 Jason Xing wrote:  
> > > copy mode:   1,109,754 pps
> > > batch mode:  2,393,498 pps (+115.6%)
> > > xmit.more:   3,024,110 pps (+172.5%)
> > > zc mode:    14,879,414 pps  
> >
> > I've asked you multiple times to add comparison with the performance
> > of AF_PACKET. What's the disconnect?  
> 
> Sorry for missing the question. I'm not very familiar with how to run the
> test based on AF_PACKET. Could you point it out for me? Thanks.
> 
> I remember the very initial version of AF_XDP was pure AF_PACKET. So
> may I ask why we expect to see the comparison between them?

Pretty sure I told you this at least twice but the point of AF_XDP
is the ZC mode. Without a comparison to AF_PACKET which has similar
functionality optimizing AF_XDP copy mode seems unjustified.





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