uname -a: Linux lsrv 5.4.0-80-generic #90-Ubuntu SMP Fri Jul 9 22:49:44 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 51013 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 185 24.0 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 185 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 50171 connected to 10.7.1.1 port 5102 [ 7] local 10.7.0.2 port 34573 connected to 10.7.1.1 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 14.8 MBytes 12.4 Mbits/sec 238 9.90 KBytes [ 7] 0.00-10.00 sec 15.8 MBytes 13.2 Mbits/sec 235 15.6 KBytes [SUM] 0.00-10.00 sec 30.6 MBytes 25.7 Mbits/sec 473 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 14.8 MBytes 12.4 Mbits/sec 238 sender [ 5] 0.00-10.01 sec 13.9 MBytes 11.7 Mbits/sec receiver [ 7] 0.00-10.00 sec 15.8 MBytes 13.2 Mbits/sec 235 sender [ 7] 0.00-10.01 sec 14.6 MBytes 12.2 Mbits/sec receiver [SUM] 0.00-10.00 sec 30.6 MBytes 25.7 Mbits/sec 473 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 51557 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 130 21.2 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.7 MBytes 24.0 Mbits/sec 130 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 41975 connected to 10.7.1.1 port 5102 [ 7] local 10.7.0.2 port 45229 connected to 10.7.1.1 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 14.7 MBytes 12.3 Mbits/sec 188 7.07 KBytes [ 7] 0.00-10.00 sec 14.0 MBytes 11.8 Mbits/sec 184 11.3 KBytes [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 372 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 14.7 MBytes 12.3 Mbits/sec 188 sender [ 5] 0.00-10.01 sec 14.6 MBytes 12.2 Mbits/sec receiver [ 7] 0.00-10.00 sec 14.0 MBytes 11.8 Mbits/sec 184 sender [ 7] 0.00-10.01 sec 13.9 MBytes 11.7 Mbits/sec receiver [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 372 sender [SUM] 0.00-10.01 sec 28.5 MBytes 23.9 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 55599 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 130 15.6 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec 130 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 32817 connected to 10.7.1.1 port 5102 [ 7] local 10.7.0.2 port 45053 connected to 10.7.1.1 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 161 8.48 KBytes [ 7] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 154 9.90 KBytes [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 315 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 161 sender [ 5] 0.00-10.00 sec 14.2 MBytes 11.9 Mbits/sec receiver [ 7] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 154 sender [ 7] 0.00-10.00 sec 14.2 MBytes 11.9 Mbits/sec receiver [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 315 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 58345 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 181 21.2 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 181 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 58181 connected to 10.7.1.2 port 5102 [ 7] local 10.7.0.1 port 60191 connected to 10.7.1.2 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 14.7 MBytes 12.3 Mbits/sec 233 11.3 KBytes [ 7] 0.00-10.00 sec 14.5 MBytes 12.2 Mbits/sec 227 7.07 KBytes [SUM] 0.00-10.00 sec 29.2 MBytes 24.5 Mbits/sec 460 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 14.7 MBytes 12.3 Mbits/sec 233 sender [ 5] 0.00-10.01 sec 14.2 MBytes 11.9 Mbits/sec receiver [ 7] 0.00-10.00 sec 14.5 MBytes 12.2 Mbits/sec 227 sender [ 7] 0.00-10.01 sec 14.3 MBytes 11.9 Mbits/sec receiver [SUM] 0.00-10.00 sec 29.2 MBytes 24.5 Mbits/sec 460 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 43653 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 132 14.1 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec 132 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 57601 connected to 10.7.1.2 port 5102 [ 7] local 10.7.0.1 port 55071 connected to 10.7.1.2 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 14.1 MBytes 11.8 Mbits/sec 187 11.3 KBytes [ 7] 0.00-10.00 sec 14.6 MBytes 12.2 Mbits/sec 194 5.66 KBytes [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 381 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 14.1 MBytes 11.8 Mbits/sec 187 sender [ 5] 0.00-10.00 sec 14.0 MBytes 11.7 Mbits/sec receiver [ 7] 0.00-10.00 sec 14.6 MBytes 12.2 Mbits/sec 194 sender [ 7] 0.00-10.00 sec 14.5 MBytes 12.2 Mbits/sec receiver [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 381 sender [SUM] 0.00-10.00 sec 28.5 MBytes 23.9 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 55063 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 142 18.4 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec 142 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 38909 connected to 10.7.1.2 port 5102 [ 7] local 10.7.0.1 port 41237 connected to 10.7.1.2 port 5102 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 157 8.48 KBytes [ 7] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 162 7.07 KBytes [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 319 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 157 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 162 sender [ 7] 0.00-10.00 sec 14.2 MBytes 11.9 Mbits/sec receiver [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 319 sender [SUM] 0.00-10.00 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done.