I tested netflix through a sony BDP-S185 blue-ray player this morning. It doesn't appear to be using upnp, and aside from one glitch on startup, streamed a dr who episode fine through a 7mbit down,768Mbit up SQM'd DSL system during a set of rrul tests, falling back to 900kbit/sec.
ECN was enabled in both directions. I did something a little unusual (by accident) on the test, running qfq+codel on the rrul client. I later repeated the test with sch_fq to no ill effect. (Linux puck 3.13.1-pie-4 #1 SMP PREEMPT Fri Jan 31 17:44:17 PST 2014 x86_64 x86_64 x86_64 GNU/Linux) It is unclear to me how much buffering netflix clients have. Later on I restarted sqm (with ecn disabled), which interrupted playback briefly during the restart, but was otherwise fine. Plots & screenshots http://snapon.lab.bufferbloat.net/~d/netflix/ config queue 'ge00' option interface 'ge00' option script 'simple.qos' option qdisc_advanced '1' option ingress_ecn 'ECN' option qdisc_really_really_advanced '1' option etarget 'auto' option linklayer 'atm' option overhead '40' option enabled '1' option download '6400' option upload '684' option qdisc 'fq_codel' option egress_ecn 'ECN' root@lorna-gw:/etc/config# tc -s qdisc show dev ifb0 qdisc htb 1: root refcnt 2 r2q 10 default 12 direct_packets_stat 0 Sent 2167186854 bytes 1564144 pkt (dropped 0, overlimits 1574115 requeues 0) backlog 0b 0p requeues 0 qdisc fq_codel 110: parent 1:11 limit 1001p flows 1024 quantum 500 target 5.0ms interval 100.0ms ecn Sent 636 bytes 4 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 maxpacket 256 drop_overlimit 0 new_flow_count 1 ecn_mark 0 new_flows_len 1 old_flows_len 0 qdisc fq_codel 120: parent 1:12 limit 1001p flows 1024 quantum 1500 target 5.0ms interval 100.0ms ecn Sent 2167186218 bytes 1564140 pkt (dropped 1858, overlimits 0 requeues 0) backlog 0b 0p requeues 0 maxpacket 1749 drop_overlimit 0 new_flow_count 211883 ecn_mark 1443 new_flows_len 1 old_flows_len 9 qdisc fq_codel 130: parent 1:13 limit 1001p flows 1024 quantum 300 target 5.0ms interval 100.0ms ecn Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 maxpacket 256 drop_overlimit 0 new_flow_count 0 ecn_mark 0 new_flows_len 0 old_flows_len 0 root@lorna-gw:/etc/config# tc -s qdisc show dev ge00 qdisc htb 1: root refcnt 2 r2q 10 default 12 direct_packets_stat 0 Sent 195266734 bytes 760801 pkt (dropped 0, overlimits 431552 requeues 0) backlog 0b 0p requeues 0 qdisc fq_codel 110: parent 1:11 limit 1001p flows 1024 quantum 300 target 18.0ms interval 113.0ms ecn Sent 19141745 bytes 91385 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 maxpacket 742 drop_overlimit 0 new_flow_count 35799 ecn_mark 0 new_flows_len 1 old_flows_len 2 qdisc fq_codel 120: parent 1:12 limit 1001p flows 1024 quantum 300 target 18.0ms interval 113.0ms ecn Sent 176124989 bytes 669416 pkt (dropped 4835, overlimits 0 requeues 0) backlog 0b 0p requeues 0 maxpacket 1749 drop_overlimit 0 new_flow_count 84298 ecn_mark 9065 new_flows_len 1 old_flows_len 5 qdisc fq_codel 130: parent 1:13 limit 1001p flows 1024 quantum 300 target 18.0ms interval 113.0ms ecn Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 maxpacket 256 drop_overlimit 0 new_flow_count 0 ecn_mark 0 new_flows_len 0 old_flows_len 0 qdisc ingress ffff: parent ffff:fff1 ---------------- Sent 1867078978 bytes 1591897 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 -- Dave Täht Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html _______________________________________________ Cerowrt-devel mailing list [email protected] https://lists.bufferbloat.net/listinfo/cerowrt-devel
