Hi everyone, I’ve been testing the behavior of the HQoS plugin in VPP. As for now there is only a single subport (Subport 0), and 4096 pipes in each subport. I tested HQoS for the default profile (profile 0) which should assign approximately 2-3Mbps to each user on a 10Gbps link. For two iperf3 clients simultaneously sending traffic to vpp, HQoS is working fine and limiting traffic to 2Mbps per client but for greater number of clients it does not function the same way.
Below is a simple topology I have implemented to test the HQoS functionality. I tried changing the token bucket rate, token bucket size and tc_period values but still not much luck. I have attached results for 10 clients with different combinations of token bucket size, token bucket rate and tc_period. Any ideas what the problem might be ? Also, in what proportion should the tb_rate, tb_size , tc_rate and tc_period should be set ? S# Rate (Bytes per second) Token Bucket Size (Bytes) TC Period (ms) Total no of PPPoE sessions Expected Result (Commulative average bandwidth in Mbps) Actual Result (Commulative average bandwidth in Mbps) Comments Subport Pipe Subport Pipe Subport Pipe 1 1250000000 305175 1000000 1000000 10 40 10 24.4 8.1 vpp remains stable 2 1250000000 305175 1000000 1000000 10 60 10 24.4 12.72 vpp remains stable 3 1250000000 305175 1000000 1000000 10 100 10 24.4 11.4 vpp remains stable 4 1250000000 305175 1000000 10000000 10 40 10 24.4 12.1 vpp remains stable 5 1250000000 305175 10000000 10000000 10 40 10 24.4 12.03 vpp remains stable 6 1250000000 305175 10000000 10000000 10 100 10 24.4 2.21 vpp crashes after a few seconds 7 1250000000 305175 1000000 1000000 10 60 10 24.4 12.1 vpp remains stable Regards, Abeeha Aqeel Network Design Engineer, xFlow Research Inc. abeeha.aq...@xflowresearch.com
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