On Tue, Jan 24, 2017 at 7:48 PM, John Fastabend <john.fastabend@xxxxxxxxx> wrote: > > It is a concern on my side. I want XDP and Linux stack to work > reasonably well together. btw the micro benchmarks showed that page per packet approach that xdp took in mlx4 should be 10% slower vs normal operation for tcp/ip stack. We thought that for our LB use case it will be an acceptable slowdown, but turned out that overall we got a performance boost, since xdp model simplified user space and got data path faster, so we magically got extra free cpu that is used for other apps on the same host and overall perf win despite extra overhead in tcp/ip. Not all use cases are the same and not everyone will be as lucky, so I'd like to see performance of xdp_pass improving too, though it turned out to be not as high priority as I initially estimated. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
