I see you run the VPP worker on core 6, is it on the same NUMA node as the NIC? You can check with 'sh pci' and 'sh thr'.
Best ben > -----Original Message----- > From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of r...@gmx.net > Sent: Friday, December 30, 2022 20:05 > To: vpp-dev@lists.fd.io > Subject: [vpp-dev] Slow VPP performance vs. DPDK l2fwd / l3wfd > > > Hi VPP team, > > need to wrap my head around why VPP is not even able to process 10 Mpps > one single-core setup. > Afaik VPP xconnect ( comparable to l2fwd) or L3-routing ( l3wfd) should > yield 10 Mpps even back in 2017 ( slide 15 > https://wiki.fd.io/images/3/31/Benchmarking-sw-data-planes-Dec5_2017.pdf > or p16 https://lfnetworking.org/wp- > content/uploads/sites/7/2022/06/benchmarking_sw_data_planes_skx_bdx_mar07_ > 2019.pdf ) > > My setup is quite up-to-date: > > Traffic Gen: TRex running on Intel(R) Xeon(R) Gold 6354 CPU @ 3.00GHz > DuT: VPP 22.10 running on Icelake Intel(R) Xeon(R) Platinum 8352Y CPU @ > 2.20GHz > > NICs: ConnectX-6 Dx Dualport > OS: Ubuntu Server 20.04 > > VPP compiled from src . Tag 22.10. Incl. changes to compile for MLX5_PMD. > > VPP show dpdk version: > DPDK Version: DPDK 22.07.0 > DPDK EAL init args: --in-memory --no-telemetry --file-prefix vpp -a > 0000:4b:00.0,mprq_en=1,rxqs_min_mprq=1,mprq_log_stride_num=9,txq_inline_mp > w=128,rxq_pkt_pad_en=1 -a > 0000:4b:00.1,mprq_en=1,rxqs_min_mprq=1,mprq_log_stride_num=9,txq_inline_mp > w=128,rxq_pkt_pad_en=1 > > QUESTION: > > Running the a plain DPDK 22.07 example l2fwd or l3fwd yields > 10 Mpps ( > 100 Gbps line rate) with 1 lcore. Also no additional dpdk options > required. > > Once I run either xconnect or L3 routing with VPP, the same test drops to > 6 Mpps or less. It is puzzling why VPP is not even close the same exact > dpdk l2fwd/ l3wfd example? Any advise? > > > Here are the additional cmds to configure either l2fwd or L3-routing in > VPP: > > ```bash > set interface l2 xconnect HundredGigabitEthernet4b/0/0 > HundredGigabitEthernet4b/0/1 > set interface l2 xconnect HundredGigabitEthernet4b/0/1 > HundredGigabitEthernet4b/0/0 > > # l3 routing > set interface ip address HundredGigabitEthernet4b/0/0 10.10.1.1/24 > set interface ip address HundredGigabitEthernet4b/0/1 10.10.2.1/24 > ip route add 16.0.0.0/8 via 10.10.1.2 > ip route add 48.0.0.0/8 via 10.10.2.2 > > ``` >
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