Hi Lorenzo, On Mon, Sep 16, 2024 at 12:13:42PM GMT, Lorenzo Bianconi wrote: > Add GRO support to cpumap codebase moving the cpu_map_entry kthread to a > NAPI-kthread pinned on the selected cpu. > > Changes in rfc v2: > - get rid of dummy netdev dependency > > Lorenzo Bianconi (3): > net: Add napi_init_for_gro routine > net: add napi_threaded_poll to netdevice.h > bpf: cpumap: Add gro support > > include/linux/netdevice.h | 3 + > kernel/bpf/cpumap.c | 123 ++++++++++++++++---------------------- > net/core/dev.c | 27 ++++++--- > 3 files changed, 73 insertions(+), 80 deletions(-) > > -- > 2.46.0 > Sorry about the long delay - finally caught up to everything after conferences. I re-ran my synthetic tests (including baseline). v2 is somehow showing 2x bigger gains than v1 (~30% vs ~14%) for tcp_stream. Again, the only variable I changed is kernel version - steering prog is active for both. Baseline (again) ./tcp_rr -c -H $TASK_IP -p 50,90,99 -T4 -F8 -l30 ./tcp_stream -c -H $TASK_IP -T8 -F16 -l30 Transactions Latency P50 (s) Latency P90 (s) Latency P99 (s) Throughput (Mbit/s) Run 1 2560252 0.00009087 0.00010495 0.00011647 Run 1 15479.31 Run 2 2665517 0.00008575 0.00010239 0.00013311 Run 2 15162.48 Run 3 2755939 0.00008191 0.00010367 0.00012287 Run 3 14709.04 Run 4 2595680 0.00008575 0.00011263 0.00012671 Run 4 15373.06 Run 5 2841865 0.00007999 0.00009471 0.00012799 Run 5 15234.91 Average 2683850.6 0.000084854 0.00010367 0.00012543 Average 15191.76 cpumap NAPI patches v2 Transactions Latency P50 (s) Latency P90 (s) Latency P99 (s) Throughput (Mbit/s) Run 1 2577838 0.00008575 0.00012031 0.00013695 Run 1 19914.56 Run 2 2729237 0.00007551 0.00013311 0.00017663 Run 2 20140.92 Run 3 2689442 0.00008319 0.00010495 0.00013311 Run 3 19887.48 Run 4 2862366 0.00008127 0.00009471 0.00010623 Run 4 19374.49 Run 5 2700538 0.00008319 0.00010367 0.00012799 Run 5 19784.49 Average 2711884.2 0.000081782 0.00011135 0.000136182 Average 19820.388 Delta 1.04% -3.62% 7.41% 8.57% 30.47% Thanks, Daniel
