uname -a: Linux c1 5.10.0+ #4 SMP Sun Jul 25 00:21:35 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux tc -V: tc utility, iproute2-ss200127 fq_codel flow hash keys src --------------------------- qdisc htb 1: root refcnt 2 r2q 10 default 0xfffe direct_packets_stat 0 direct_qlen 1000 qdisc fq_codel fffe: parent 1:fffe limit 10240p flows 65536 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn filter protocol all pref 49152 flow chain 0 filter protocol all pref 49152 flow chain 0 handle 0x1 hash keys src divisor 65536 baseclass fffe:1 qdisc htb 1: root refcnt 2 r2q 10 default 0xfffe direct_packets_stat 0 direct_qlen 1000 qdisc fq_codel fffe: parent 1:fffe limit 10240p flows 65536 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn filter protocol all pref 49152 flow chain 0 filter protocol all pref 49152 flow chain 0 handle 0x1 hash keys src divisor 65536 baseclass fffe:1 iperf3 -P 1 -B 10.7.0.1 -c 10.7.1.1 -p 5101 iperf3 -P 2 -B 10.7.0.2 -c 10.7.1.1 -p 5102 Connecting to host 10.7.1.1, port 5101 [ 5] local 10.7.0.1 port 34375 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 28.7 MBytes 24.0 Mbits/sec 192 18.4 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.7 MBytes 24.0 Mbits/sec 192 sender [ 5] 0.00-10.01 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.1, port 5102 [ 5] local 10.7.0.2 port 42805 connected to 10.7.1.1 port 5102 [ 7] local 10.7.0.2 port 36069 connected to 10.7.1.1 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 15.7 MBytes 13.1 Mbits/sec 248 11.3 KBytes [ 7] 0.00-10.00 sec 13.9 MBytes 11.7 Mbits/sec 218 11.3 KBytes [SUM] 0.00-10.00 sec 29.6 MBytes 24.8 Mbits/sec 466 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 15.7 MBytes 13.1 Mbits/sec 248 sender [ 5] 0.00-10.01 sec 14.7 MBytes 12.3 Mbits/sec receiver [ 7] 0.00-10.00 sec 13.9 MBytes 11.7 Mbits/sec 218 sender [ 7] 0.00-10.01 sec 13.8 MBytes 11.6 Mbits/sec receiver [SUM] 0.00-10.00 sec 29.6 MBytes 24.8 Mbits/sec 466 sender [SUM] 0.00-10.01 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done. cake srchost besteffort ----------------------- qdisc cake 8009: root refcnt 2 bandwidth 50Mbit besteffort srchost nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0 qdisc cake 800a: root refcnt 2 bandwidth 50Mbit besteffort srchost nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0 iperf3 -P 1 -B 10.7.0.1 -c 10.7.1.1 -p 5101 iperf3 -P 2 -B 10.7.0.2 -c 10.7.1.1 -p 5102 Connecting to host 10.7.1.1, port 5101 [ 5] local 10.7.0.1 port 59567 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 192 8.48 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 192 sender [ 5] 0.00-10.00 sec 19.0 MBytes 15.9 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.1, port 5102 [ 5] local 10.7.0.2 port 46881 connected to 10.7.1.1 port 5102 [ 7] local 10.7.0.2 port 56957 connected to 10.7.1.1 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 193 8.48 KBytes [ 7] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 200 8.48 KBytes [SUM] 0.00-10.00 sec 38.1 MBytes 32.0 Mbits/sec 393 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 193 sender [ 5] 0.00-10.00 sec 19.0 MBytes 15.9 Mbits/sec receiver [ 7] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 200 sender [ 7] 0.00-10.00 sec 19.0 MBytes 15.9 Mbits/sec receiver [SUM] 0.00-10.00 sec 38.1 MBytes 32.0 Mbits/sec 393 sender [SUM] 0.00-10.00 sec 38.0 MBytes 31.9 Mbits/sec receiver iperf Done. cake dual-srchost besteffort ---------------------------- qdisc cake 800b: root refcnt 2 bandwidth 50Mbit besteffort dual-srchost nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0 qdisc cake 800c: root refcnt 2 bandwidth 50Mbit besteffort dual-srchost nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0 iperf3 -P 1 -B 10.7.0.1 -c 10.7.1.1 -p 5101 iperf3 -P 2 -B 10.7.0.2 -c 10.7.1.1 -p 5102 Connecting to host 10.7.1.1, port 5101 [ 5] local 10.7.0.1 port 56945 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec 120 14.1 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec 120 sender [ 5] 0.00-10.00 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.1, port 5102 [ 5] local 10.7.0.2 port 60763 connected to 10.7.1.1 port 5102 [ 7] local 10.7.0.2 port 59523 connected to 10.7.1.1 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 14.4 MBytes 12.0 Mbits/sec 172 7.07 KBytes [ 7] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec 160 9.90 KBytes [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 332 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 14.4 MBytes 12.0 Mbits/sec 172 sender [ 5] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec receiver [ 7] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec 160 sender [ 7] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec receiver [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 332 sender [SUM] 0.00-10.00 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done. fq_codel flow hash keys dst --------------------------- qdisc htb 1: root refcnt 2 r2q 10 default 0xfffe direct_packets_stat 0 direct_qlen 1000 qdisc fq_codel fffe: parent 1:fffe limit 10240p flows 65536 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn filter protocol all pref 49152 flow chain 0 filter protocol all pref 49152 flow chain 0 handle 0x1 hash keys dst divisor 65536 baseclass fffe:1 qdisc htb 1: root refcnt 2 r2q 10 default 0xfffe direct_packets_stat 0 direct_qlen 1000 qdisc fq_codel fffe: parent 1:fffe limit 10240p flows 65536 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn filter protocol all pref 49152 flow chain 0 filter protocol all pref 49152 flow chain 0 handle 0x1 hash keys dst divisor 65536 baseclass fffe:1 iperf3 -P 1 -B 10.7.0.1 -c 10.7.1.1 -p 5101 iperf3 -P 2 -B 10.7.0.1 -c 10.7.1.2 -p 5102 Connecting to host 10.7.1.1, port 5101 [ 5] local 10.7.0.1 port 38987 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 28.7 MBytes 24.0 Mbits/sec 190 21.2 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.7 MBytes 24.0 Mbits/sec 190 sender [ 5] 0.00-10.01 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.2, port 5102 [ 5] local 10.7.0.1 port 41445 connected to 10.7.1.2 port 5102 [ 7] local 10.7.0.1 port 42893 connected to 10.7.1.2 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 15.4 MBytes 13.0 Mbits/sec 257 9.90 KBytes [ 7] 0.00-10.00 sec 13.9 MBytes 11.7 Mbits/sec 223 8.48 KBytes [SUM] 0.00-10.00 sec 29.3 MBytes 24.6 Mbits/sec 480 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 15.4 MBytes 13.0 Mbits/sec 257 sender [ 5] 0.00-10.01 sec 14.7 MBytes 12.4 Mbits/sec receiver [ 7] 0.00-10.00 sec 13.9 MBytes 11.7 Mbits/sec 223 sender [ 7] 0.00-10.01 sec 13.8 MBytes 11.6 Mbits/sec receiver [SUM] 0.00-10.00 sec 29.3 MBytes 24.6 Mbits/sec 480 sender [SUM] 0.00-10.01 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done. cake dsthost besteffort ----------------------- qdisc cake 800d: root refcnt 2 bandwidth 50Mbit besteffort dsthost nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0 qdisc cake 800e: root refcnt 2 bandwidth 50Mbit besteffort dsthost nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0 iperf3 -P 1 -B 10.7.0.1 -c 10.7.1.1 -p 5101 iperf3 -P 2 -B 10.7.0.1 -c 10.7.1.2 -p 5102 Connecting to host 10.7.1.1, port 5101 [ 5] local 10.7.0.1 port 49859 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 189 11.3 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 189 sender [ 5] 0.00-10.00 sec 19.0 MBytes 15.9 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.2, port 5102 [ 5] local 10.7.0.1 port 53981 connected to 10.7.1.2 port 5102 [ 7] local 10.7.0.1 port 38209 connected to 10.7.1.2 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 182 11.3 KBytes [ 7] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 184 11.3 KBytes [SUM] 0.00-10.00 sec 38.1 MBytes 32.0 Mbits/sec 366 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 182 sender [ 5] 0.00-10.00 sec 19.0 MBytes 15.9 Mbits/sec receiver [ 7] 0.00-10.00 sec 19.1 MBytes 16.0 Mbits/sec 184 sender [ 7] 0.00-10.00 sec 19.0 MBytes 15.9 Mbits/sec receiver [SUM] 0.00-10.00 sec 38.1 MBytes 32.0 Mbits/sec 366 sender [SUM] 0.00-10.00 sec 38.0 MBytes 31.9 Mbits/sec receiver iperf Done. cake dual-dsthost besteffort ---------------------------- qdisc cake 800f: root refcnt 2 bandwidth 50Mbit besteffort dual-dsthost nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0 qdisc cake 8010: root refcnt 2 bandwidth 50Mbit besteffort dual-dsthost nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0 iperf3 -P 1 -B 10.7.0.1 -c 10.7.1.1 -p 5101 iperf3 -P 2 -B 10.7.0.1 -c 10.7.1.2 -p 5102 Connecting to host 10.7.1.1, port 5101 [ 5] local 10.7.0.1 port 50625 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec 127 12.7 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec 127 sender [ 5] 0.00-10.00 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.2, port 5102 [ 5] local 10.7.0.1 port 43705 connected to 10.7.1.2 port 5102 [ 7] local 10.7.0.1 port 57745 connected to 10.7.1.2 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec 171 8.48 KBytes [ 7] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 171 7.07 KBytes [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 342 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec 171 sender [ 5] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec receiver [ 7] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 171 sender [ 7] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec receiver [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 342 sender [SUM] 0.00-10.00 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done.