Jesper Dangaard Brouer <bro...@redhat.com> writes: > On Thu, 21 Feb 2019 12:56:54 +0100 > Toke Høiland-Jørgensen <t...@redhat.com> wrote: > >> The default maps used by xdp_redirect() are changed to use the new map >> type, which means that xdp_redirect() is no longer limited to ifindex < 64, >> but instead to 64 total simultaneous interfaces per network namespace. This >> also provides an easy way to compare the performance of devmap and >> devmap_idx: >> >> xdp_redirect_map (devmap): 8394560 pkt/s >> xdp_redirect (devmap_idx): 8179480 pkt/s >> >> Difference: 215080 pkt/s or 3.1 nanoseconds per packet. > > (1/8394560-1/8179480)*10^9 = -3.13239 ns > > But was the xdp_redirect_map code-path affected from patch 1/1? > (1/8412754-1/8394560)*10^9 = -0.2576 ns > > It doesn't look like any performance regression to xdp_redirect_map > from these code changes :-)
Nope, the difference between the two patches is just random noise; the numbers vary more between runs (or even between samples in the same run), which is why I didn't mention that difference. -Toke
