On Fri, 26 Feb 2021 13:26:22 +0100 Toke Høiland-Jørgensen <toke@xxxxxxxxxx> wrote: > Björn Töpel <bjorn.topel@xxxxxxxxx> writes: > > > On 2021-02-26 12:40, Björn Töpel wrote: > >> On 2021-02-26 12:37, Toke Høiland-Jørgensen wrote: > > > > [...] > > > >>> > >>> (That last paragraph above is why I asked if you updated the performance > >>> numbers in the cover letter; removing an additional function call should > >>> affect those, right?) > >>> > >> > >> Yeah, it should. Let me spend some more time benchmarking on the DEVMAP > >> scenario. > >> > > > > I did a re-measure using samples/xdp_redirect_map. > > > > The setup is 64B packets blasted to an i40e. As a baseline, > > > > # xdp_rxq_info --dev ens801f1 --action XDP_DROP > > > > gives 24.8 Mpps. > > > > > > Now, xdp_redirect_map. Same NIC, two ports, receive from port A, > > redirect to port B: > > > > baseline: 14.3 Mpps > > this series: 15.4 Mpps > > > > which is almost 8%! > > Or 5 ns difference: > > 10**9/(14.3*10**6) - 10**9/(15.4*10**6) > 4.995004995005004 > > Nice :) Yes, this is a very significant improvement at this zoom-in benchmarking level :-) -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer
