uname -a: Linux luke 4.9.35-v7+ #1014 SMP Fri Jun 30 14:47:43 BST 2017 armv7l GNU/Linux tc -V: tc utility, iproute2-ss180402 fq_codel flow hash keys src --------------------------- qdisc htb 1: root refcnt 2 r2q 10 default 65534 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 filter protocol all pref 49152 flow handle 0x1 hash keys src divisor 65536 baseclass fffe:1 qdisc htb 1: root refcnt 2 r2q 10 default 65534 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 filter protocol all pref 49152 flow 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 [ 4] local 10.7.0.1 port 47261 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 202 19.8 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 202 sender [ 4] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.1, port 5102 [ 4] local 10.7.0.2 port 50439 connected to 10.7.1.1 port 5102 [ 6] local 10.7.0.2 port 33545 connected to 10.7.1.1 port 5102 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 16.8 MBytes 14.1 Mbits/sec 255 24.0 KBytes [ 6] 0.00-10.00 sec 13.2 MBytes 11.1 Mbits/sec 242 7.07 KBytes [SUM] 0.00-10.00 sec 30.0 MBytes 25.2 Mbits/sec 497 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 16.8 MBytes 14.1 Mbits/sec 255 sender [ 4] 0.00-10.00 sec 15.7 MBytes 13.2 Mbits/sec receiver [ 6] 0.00-10.00 sec 13.2 MBytes 11.1 Mbits/sec 242 sender [ 6] 0.00-10.00 sec 12.9 MBytes 10.8 Mbits/sec receiver [SUM] 0.00-10.00 sec 30.0 MBytes 25.2 Mbits/sec 497 sender [SUM] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec receiver iperf Done. cake srchost besteffort ----------------------- qdisc cake 8009: root refcnt 2 bandwidth 50Mbit besteffort srchost split-gso rtt 100.0ms raw overhead 0 qdisc cake 800a: root refcnt 2 bandwidth 50Mbit besteffort srchost 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 [ 4] local 10.7.0.1 port 35019 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 206 14.1 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 206 sender [ 4] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.1, port 5102 [ 4] local 10.7.0.2 port 58915 connected to 10.7.1.1 port 5102 [ 6] local 10.7.0.2 port 37667 connected to 10.7.1.1 port 5102 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 14.9 MBytes 12.5 Mbits/sec 287 8.48 KBytes [ 6] 0.00-10.00 sec 13.9 MBytes 11.6 Mbits/sec 293 8.48 KBytes [SUM] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 580 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 14.9 MBytes 12.5 Mbits/sec 287 sender [ 4] 0.00-10.00 sec 14.8 MBytes 12.4 Mbits/sec receiver [ 6] 0.00-10.00 sec 13.9 MBytes 11.6 Mbits/sec 293 sender [ 6] 0.00-10.00 sec 13.7 MBytes 11.5 Mbits/sec receiver [SUM] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 580 sender [SUM] 0.00-10.00 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 split-gso rtt 100.0ms raw overhead 0 qdisc cake 800c: root refcnt 2 bandwidth 50Mbit besteffort dual-srchost 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 [ 4] local 10.7.0.1 port 35145 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 190 12.7 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 190 sender [ 4] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.1, port 5102 [ 4] local 10.7.0.2 port 48781 connected to 10.7.1.1 port 5102 [ 6] local 10.7.0.2 port 54141 connected to 10.7.1.1 port 5102 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 229 21.2 KBytes [ 6] 0.00-10.00 sec 14.4 MBytes 12.0 Mbits/sec 222 7.07 KBytes [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 451 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 14.4 MBytes 12.1 Mbits/sec 229 sender [ 4] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec receiver [ 6] 0.00-10.00 sec 14.4 MBytes 12.0 Mbits/sec 222 sender [ 6] 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 451 sender [SUM] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec receiver iperf Done. fq_codel flow hash keys dst --------------------------- qdisc htb 1: root refcnt 2 r2q 10 default 65534 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 filter protocol all pref 49152 flow handle 0x1 hash keys dst divisor 65536 baseclass fffe:1 qdisc htb 1: root refcnt 2 r2q 10 default 65534 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 filter protocol all pref 49152 flow 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 [ 4] local 10.7.0.1 port 58423 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 200 18.4 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 28.8 MBytes 24.1 Mbits/sec 200 sender [ 4] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.2, port 5102 [ 4] local 10.7.0.1 port 48367 connected to 10.7.1.2 port 5102 [ 6] local 10.7.0.1 port 33243 connected to 10.7.1.2 port 5102 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 16.0 MBytes 13.4 Mbits/sec 271 17.0 KBytes [ 6] 0.00-10.00 sec 14.2 MBytes 11.9 Mbits/sec 246 11.3 KBytes [SUM] 0.00-10.00 sec 30.2 MBytes 25.3 Mbits/sec 517 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 16.0 MBytes 13.4 Mbits/sec 271 sender [ 4] 0.00-10.00 sec 14.8 MBytes 12.4 Mbits/sec receiver [ 6] 0.00-10.00 sec 14.2 MBytes 11.9 Mbits/sec 246 sender [ 6] 0.00-10.00 sec 13.8 MBytes 11.6 Mbits/sec receiver [SUM] 0.00-10.00 sec 30.2 MBytes 25.3 Mbits/sec 517 sender [SUM] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec receiver iperf Done. cake dsthost besteffort ----------------------- qdisc cake 800d: root refcnt 2 bandwidth 50Mbit besteffort dsthost split-gso rtt 100.0ms raw overhead 0 qdisc cake 800e: root refcnt 2 bandwidth 50Mbit besteffort dsthost 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 [ 4] local 10.7.0.1 port 54877 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 28.7 MBytes 24.0 Mbits/sec 207 28.3 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 28.7 MBytes 24.0 Mbits/sec 207 sender [ 4] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.2, port 5102 [ 4] local 10.7.0.1 port 42423 connected to 10.7.1.2 port 5102 [ 6] local 10.7.0.1 port 34705 connected to 10.7.1.2 port 5102 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 15.1 MBytes 12.7 Mbits/sec 298 5.66 KBytes [ 6] 0.00-10.00 sec 13.6 MBytes 11.4 Mbits/sec 296 7.07 KBytes [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 594 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 15.1 MBytes 12.7 Mbits/sec 298 sender [ 4] 0.00-10.00 sec 15.0 MBytes 12.6 Mbits/sec receiver [ 6] 0.00-10.00 sec 13.6 MBytes 11.4 Mbits/sec 296 sender [ 6] 0.00-10.00 sec 13.5 MBytes 11.3 Mbits/sec receiver [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 594 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 split-gso rtt 100.0ms raw overhead 0 qdisc cake 8010: root refcnt 2 bandwidth 50Mbit besteffort dual-dsthost 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 [ 4] local 10.7.0.1 port 34109 connected to 10.7.1.1 port 5101 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec 187 14.1 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 28.6 MBytes 24.0 Mbits/sec 187 sender [ 4] 0.00-10.00 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done. Connecting to host 10.7.1.2, port 5102 [ 4] local 10.7.0.1 port 46669 connected to 10.7.1.2 port 5102 [ 6] local 10.7.0.1 port 49117 connected to 10.7.1.2 port 5102 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-10.00 sec 14.4 MBytes 12.0 Mbits/sec 233 8.48 KBytes [ 6] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec 226 11.3 KBytes [SUM] 0.00-10.00 sec 28.7 MBytes 24.1 Mbits/sec 459 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 14.4 MBytes 12.0 Mbits/sec 233 sender [ 4] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec receiver [ 6] 0.00-10.00 sec 14.3 MBytes 12.0 Mbits/sec 226 sender [ 6] 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 459 sender [SUM] 0.00-10.00 sec 28.5 MBytes 23.9 Mbits/sec receiver iperf Done.