From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-x229.google.com (mail-wm0-x229.google.com [IPv6:2a00:1450:400c:c09::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 8B8F33BA8E for ; Sat, 2 Dec 2017 15:13:55 -0500 (EST) Received: by mail-wm0-x229.google.com with SMTP id g75so8807901wme.0 for ; Sat, 02 Dec 2017 12:13:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:subject:message-id:date:to:mime-version; bh=KO7vfuoWlb5h3V4VAAeffdT+TmxR7urFsmb9v4H968k=; b=KJku37YUBa/uRi9bkKFRHgGcWkjSCZPV0RUwiQpP9nMifyZBsd3U5XUGHS051aAsTO TbJMZsH+TEVrHFAlr+S3FTA0xw6vy1V0tbsrFiEQ9jA18YOZhFDsSM8rzhgUZWpL1IlG YX4BH6ee4LULONLNrQVG4noFA/wEtrYUWRSz8gSNScKxzksm9F5S795rKbe8U43xwmlu xDNU0UbUsAktsx4b48Ys6iwv4CxbblcQ9i0TSkUwakTuRXLYyz+MDiVIKHBMnfszKosC q0syCquVQn/98zh8pvZVgft8i5V0FqbxfjUmiT8KAeVOghneCl2/HgjX6XicL2dlKSMQ AXPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:subject:message-id:date:to:mime-version; bh=KO7vfuoWlb5h3V4VAAeffdT+TmxR7urFsmb9v4H968k=; b=F/qBHKXKMY2h/Icr+B+7fkGBy32KqJxJm6UtX3Hzspfm0a94av47BBNBb3bv/0cwhc 41llf0Q4x+zNK8Hq8JwcNsFhYwDG3yluEqdXLkTf8U9cnKHlq2izBKKwDlgHGtTE0Ct8 uQa8rdpeNKvGHBqzrtJthitbPV18e/K+ChtgxzupSNoGoDz2lUyy06hQjXHD9/ZQ+3XP 4YCLMXCkngZB0FKK+7shUito5gI2tiDmCu2qquffZu1p7lIOpXAMt8piSsUO1PAv+l0q li0Iwf0Sj2Bs5PC2vpgMnCA+PGcmuoBIT/VUHJNjFXT+n2oQO8V6Mb8O6p9VXiu2q6OU p09w== X-Gm-Message-State: AJaThX4ItCrNoZ/j9uqU6Je5knftCNXrXz/RkepqXez2t9DwGyO+G9NJ R9CflwaN56q5wdbNGpRK2IDmU9th X-Google-Smtp-Source: AGs4zMZvfAIA3XOKLAPt+YMQNYjvXeKqn4uthHcnr8oJmnwZz/RUgB3J0HX3vbjq+akpzWU11HCsKQ== X-Received: by 10.28.178.85 with SMTP id b82mr3767439wmf.47.1512245634345; Sat, 02 Dec 2017 12:13:54 -0800 (PST) Received: from [10.72.0.130] (h-1169.lbcfree.net. [185.99.119.68]) by smtp.gmail.com with ESMTPSA id k42sm13377979wre.80.2017.12.02.12.13.52 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sat, 02 Dec 2017 12:13:53 -0800 (PST) From: Pete Heist Content-Type: multipart/alternative; boundary="Apple-Mail=_A4895A33-838B-4A89-8DE4-FEC043F69EDE" Message-Id: <7855AA2C-BF69-4B9E-8794-A7D15DE44C4F@gmail.com> Date: Sat, 2 Dec 2017 21:13:51 +0100 To: Cake List Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) X-Mailer: Apple Mail (2.3124) Subject: [Cake] cake flenter results round 4 X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Dec 2017 20:13:55 -0000 --Apple-Mail=_A4895A33-838B-4A89-8DE4-FEC043F69EDE Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 http://www.drhleny.cz/bufferbloat/cake/round4/ = Round 4 Tarball: http://www.drhleny.cz/bufferbloat/cake/round4.tgz = *** Notes/Analysis *** * I took the average satellite Internet latency of 638ms = (https://en.wikipedia.org/wiki/Satellite_Internet_access) and tried = 20/20mbit 320ms delay each direction. So here we have 20mbit symmetric = Internet with Cake running on both the CPE and satellite- common config! = I=E2=80=99m sorry we don=E2=80=99t have Tooway 6/22mbit anymore for a = real test, which was also here in desperation at the house at some = point. * Since I left the default rtt setting for most tests, these tests are = an exploration of what problems that can cause. I enjoy failed = experiments though (I=E2=80=99m looking at you penicillin). Here we can = see that as we increase Cake=E2=80=99s rtt setting, total bandwidth = improves, generally: = http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_200ms_rrulbe_eg_cak= e_18.0mbit/index.html = (22.77mbit) = http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_400ms_rrulbe_eg_cak= e_18.0mbit/index.html = (26.17mbit) = http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_600ms_rrulbe_eg_cak= e_18.0mbit/index.html = (25.99mbit) = http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_800ms_rrulbe_eg_cak= e_18.0mbit/index.html = (25.96mbit) = http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_1000ms_rrulbe_eg_ca= ke_18.0mbit/index.html = (29.04mbit) * Cool. In this case, increasing rtt actually _improves_ host fairness, = as opposed to what we see with Ethernet around rtt 1ms, although TCP RTT = suffers: = http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_200ms_eg_cake_s= rc_cake_dst_18.0mbit/index.html = (1.83) = http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_400ms_eg_cake_s= rc_cake_dst_18.0mbit/index.html = (1.64) = http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_600ms_eg_cake_s= rc_cake_dst_18.0mbit/index.html = (1.57) = http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_800ms_eg_cake_s= rc_cake_dst_18.0mbit/index.html = (1.45) = http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_1000ms_eg_cake_= src_cake_dst_18.0mbit/index.html = (1.06) * Sorry for the delay and not testing much in the last few days. R.I.P. = our 16yo European housecat who left us yesterday. I really liked that = cat. I=E2=80=99ve enjoyed looking at some of George=E2=80=99s results = meanwhile... *** Round 5 Plans * If I do another high RTT test, make rtt 1000ms default and try even = higher * =46rom Dave: tcp bbr, cdg, reno? dctcp would be weirdly interesting. * =46rom Dave: slot 4ms 4ms bytes 10k 16 * If I get time I could change flenter to do asymmetric bandwidth tests = and go back to Dave=E2=80=99s four box config with ingress cake, which = would probably be a more common config. All depends on time available=E2=80= =A6 --Apple-Mail=_A4895A33-838B-4A89-8DE4-FEC043F69EDE Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
http://www.drhleny.cz/bufferbloat/cake/round4/

Round 4 Tarball: http://www.drhleny.cz/bufferbloat/cake/round4.tgz

*** Notes/Analysis = ***

* I took = the average satellite Internet latency of 638ms (https://en.wikipedia.org/wiki/Satellite_Internet_access) = and tried 20/20mbit 320ms delay each direction. So here we have 20mbit = symmetric Internet with Cake running on both the CPE and satellite- = common config! I=E2=80=99m sorry we don=E2=80=99t have Tooway 6/22mbit = anymore for a real test, which was also here in desperation at the house = at some point.

*= Since I left the default rtt setting for most tests, these tests are an = exploration of what problems that can cause. I enjoy failed experiments = though (I=E2=80=99m looking at you penicillin). Here we can see that as = we increase Cake=E2=80=99s rtt setting, total bandwidth improves, = generally:

http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_200ms_rr= ulbe_eg_cake_18.0mbit/index.html (22.77mbit)
http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_400ms_rr= ulbe_eg_cake_18.0mbit/index.html (26.17mbit)
http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_600ms_rr= ulbe_eg_cake_18.0mbit/index.html (25.99mbit)
http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_800ms_rr= ulbe_eg_cake_18.0mbit/index.html (25.96mbit)
http://www.drhleny.cz/bufferbloat/cake/round4/cake_rtt_1000ms_r= rulbe_eg_cake_18.0mbit/index.html (29.04mbit)

* Cool. In this case, = increasing rtt actually _improves_ host fairness, as opposed to what we = see with Ethernet around rtt 1ms, although TCP RTT suffers:

http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_200m= s_eg_cake_src_cake_dst_18.0mbit/index.html (1.83)
http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_400m= s_eg_cake_src_cake_dst_18.0mbit/index.html (1.64)
http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_600m= s_eg_cake_src_cake_dst_18.0mbit/index.html (1.57)
http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_800m= s_eg_cake_src_cake_dst_18.0mbit/index.html (1.45)
http://www.drhleny.cz/bufferbloat/cake/round4/hostiso_cake_1000= ms_eg_cake_src_cake_dst_18.0mbit/index.html (1.06)

* Sorry for the delay = and not testing much in the last few days. R.I.P. our 16yo European = housecat who left us yesterday. I really liked that cat. I=E2=80=99ve = enjoyed looking at some of George=E2=80=99s results = meanwhile...

***= Round 5 Plans

*= If I do another high RTT test, make rtt 1000ms default and try even = higher

* =46rom = Dave: tcp bbr, cdg, reno? dctcp would be weirdly interesting.

* =46rom Dave: slot 4ms = 4ms bytes 10k 16

* If I get time I could change flenter to do asymmetric = bandwidth tests and go back to Dave=E2=80=99s four box config with = ingress cake, which would probably be a more common config. All depends = on time available=E2=80=A6

= --Apple-Mail=_A4895A33-838B-4A89-8DE4-FEC043F69EDE--