From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-x22c.google.com (mail-we0-x22c.google.com [IPv6:2a00:1450:400c:c03::22c]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 536E921F182 for ; Mon, 17 Mar 2014 07:42:34 -0700 (PDT) Received: by mail-we0-f172.google.com with SMTP id t61so4696058wes.17 for ; Mon, 17 Mar 2014 07:42:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=nkwSae4IQ1Kisd4TaVXweYLzSeXNc6js3DzloJwI8Os=; b=jh7tnftu0oUTyomWPfXChNolLthyGXRiCeLppV2RYvG4mCc+Ac8wuzP2dsy7SYL98x vUtHx7buaZHdxPTeGDIO3iz3TNoVD2oOtfw7Ci1v6FLjbNBPzzPNVF8/VQYxkZwpJSxl xonGX4cTGHzMnoXrT7Xg339ObkMzF6plomUbF0KeWY/0VuWzEusujeaeamMYNi2NWqdC 9qfMMF3rJb6FSl3tKk/5P+uuIWmilCG5Zxi1OJsFLaxYNRdJBzmf69e0FppwLvujtmm4 zEcpizEX84ktWzGedzp8vcjdHslOmaCC/C835tcKJWGK4zfUCuwAO3tZNIs8RNvlNl23 Oh1A== MIME-Version: 1.0 X-Received: by 10.195.13.103 with SMTP id ex7mr18667339wjd.3.1395067352285; Mon, 17 Mar 2014 07:42:32 -0700 (PDT) Received: by 10.216.8.1 with HTTP; Mon, 17 Mar 2014 07:42:32 -0700 (PDT) Date: Mon, 17 Mar 2014 07:42:32 -0700 Message-ID: From: Dave Taht To: "cerowrt-devel@lists.bufferbloat.net" Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Subject: [Cerowrt-devel] netflix through a sony BDP-S185 blue-ray player X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 Mar 2014 14:42:34 -0000 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 --=20 Dave T=E4ht Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.= html