<div dir="ltr">FYI if I add a 'eth' only line (e.g. to match ARP packets) the performance remains the same (which is good). <div> </div><div>flow create 0 ingress group 1 priority 1 pattern eth / ipv6 / end actions count / rss queues 6 7 8 9 end / end flow create 0 ingress group 1 priority 1 pattern eth / ipv4 / end actions count / rss queues 6 7 8 9 end / end </div><div>flow create 0 ingress group 1 priority 2 pattern eth / end actions count / rss queues 6 7 8 9 end / end </div><div> </div><div>Any thoughts why the single 'pattern eth / end' performance is worse?</div><div> </div></div> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 26, 2024 at 9:24 AM Tony Hart <<a href="mailto:tony.hart@domainhart.com">tony.hart@domainhart.com</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Bing, Thanks for the quick reply. The results are... With a single hairpin queue I get approx the same rate for both patterns, ~54Gbps. I assume this is less than the RSS rates due to fewer queues? flow create 0 ingress group 1 pattern eth / end actions count / queue index 6 / end flow create 0 ingress group 1 pattern eth / ipv4 / end actions count / queue index 6 / end With the split ipv6/ipv4 I'm getting ~124Gbps flow create 0 ingress group 1 priority 1 pattern eth / ipv6 / end actions count / rss queues 6 7 8 9 end / end flow create 0 ingress group 1 priority 1 pattern eth / ipv4 / end actions count / rss queues 6 7 8 9 end / end testpmd> flow list 0 ID Group Prio Attr Rule 0 0 0 i-- => JUMP 1 1 1 i-- ETH IPV6 => COUNT RSS 2 1 1 i-- ETH IPV4 => COUNT RSS On Wed, Jun 26, 2024 at 8:10 AM Bing Zhao <<a href="mailto:bingz@nvidia.com" target="_blank">bingz@nvidia.com</a>> wrote: > > Hi Tony, > > Could you also try to test with: > 1. QUEUE action instead of RSS and check 1 queue performance. > 2. when trying to test IPv4 only case, try the following 3 commands with this order - > flow create 0 ingress group 0 pattern end actions jump group 1 / end > flow create 0 ingress group 1 pattern priority 1 eth / ipv6 / end actions count / rss queues 6 7 8 9 end / end > flow create 0 ingress group 1 pattern priority 1 eth / ipv4 / end actions count / rss queues 6 7 8 9 end / end > > BR. Bing > > > -----Original Message----- > > From: Tony Hart <<a href="mailto:tony.hart@domainhart.com" target="_blank">tony.hart@domainhart.com</a>> > > Sent: Wednesday, June 26, 2024 7:39 PM > > To: <a href="mailto:users@dpdk.org" target="_blank">users@dpdk.org</a> > > Subject: Performance of CX7 with 'eth' pattern versus 'eth/ipv4' in hairpin > > > > External email: Use caution opening links or attachments > > > > > > I'm using a CX7 and testing hairpin queues. The test traffic is entirely > > IPv4+UDP with distributed SIP,DIP pairs and received packets are u-turned via > > hairpin in the CX7 (single 400G interface). > > > > I see different performance when I use a pattern of 'eth' versus 'eth/ipv4' in > > the hairpin flow entry. From testing it seems that specifying just 'eth' is > > sufficient to invoke RSS and 'eth/ipv4' > > should be equivalent since the traffic is all ipv4, but I'm getting ~104Gbps for > > the 'eth' pattern and ~124Gbps for 'eth/ipv4' pattern. > > > > Any thoughts on why there is such a performance difference here? > > > > thanks > > tony > > > > This is the 'eth' pattern testpmd commands flow create 0 ingress group 0 > > pattern end actions jump group 1 / end flow create 0 ingress group 1 pattern > > eth / end actions count / rss queues 6 7 8 9 end / end > > > > The testpmd commands for 'eth/ipv4' > > flow create 0 ingress group 0 pattern end actions jump group 1 / end flow > > create 0 ingress group 1 pattern eth / ipv4 / end actions count / rss queues 6 7 > > 8 9 end / end > > > > > > This is the testpmd command line... > > dpdk-testpmd -l8-14 -a81:00.0,dv_flow_en=1 -- -i --nb-cores 6 --rxq 6 --txq 6 > > --port-topology loop --forward-mode=rxonly --hairpinq 4 --hairpin-mode > > 0x10 > > > > Versions > > mlnx-ofa_kernel-24.04-OFED.24.04.0.6.6.1.rhel9u4.x86_64 > > kmod-mlnx-ofa_kernel-24.04-OFED.24.04.0.6.6.1.rhel9u4.x86_64 > > mlnx-ofa_kernel-devel-24.04-OFED.24.04.0.6.6.1.rhel9u4.x86_64 > > ofed-scripts-24.04-OFED.24.04.0.6.6.x86_64 > > > > DPDK: v24.03 -- tony </blockquote></div> <div> </div>-- <div dir="ltr" class="gmail_signature">tony </div>