[Starlink] an rtt_fair test?
jordan at inacomptc.com
jordan at inacomptc.com
Sun Apr 17 10:35:38 EDT 2022
Hi Dave,
This isn't specifically cake related but I figured it could be interesting, especially as these are from a location where I've been investigating setting up something with cake. These are statistics from a relatives location where they only have a DSL line from CenturyLink available to them. There's a little Debian based VM I setup for a couple random things so I was able to run flent from that. They have a EdgeRouter X serving as the router so they can at least take advantage of fq_codel through the routers Smart Queue feature. I ran a quick speed test, then ran flent without sqm, and then with sqm. Sorry if this gets a bit long and hopefully it stays readable.
#############
Speedtest by Ookla
Server: 123.Net, Inc. - Southfield, MI (id = 15044)
ISP: CenturyLink
Latency: 45.45 ms (194.34 ms jitter)
Download: 8.88 Mbps (data used: 12.6 MB )
Upload: 0.64 Mbps (data used: 962.7 kB )
Packet Loss: 5.1%
Result URL: https://www.speedtest.net/result/c/799ba46b-d3d4-4d54-ac76-118fac847b73
###########
No SQM or QOS
flent -x --socket-stats --step-size=.05 -H de.starlink.taht.net -H london.starlink.taht.net -H singapore.starlink.taht.net -H fremont.starlink.taht.net -t nosqm_erx_rttfair4be_8Mbpsdown_500Kbpsup_centurylinkdsl rtt_fair4be
Started Flent 2.0.0 using Python 3.9.2.
Starting rtt_fair4be test. Expected run time: 70 seconds.
Data file written to ./rtt_fair4be-2022-04-17T145553.865990.nosqm_erx_rttfair4be_8Mbpsdown_500Kbpsup_centurylinkdsl.flent.gz
Summary of rtt_fair4be test run from 2022-04-17 13:55:53.865990
Title: 'nosqm_erx_rttfair4be_8Mbpsdown_500Kbpsup_centurylinkdsl'
avg median # data pts
Ping (ms) ICMP1 de.starlink.taht.net : 1026.06 920.00 ms 1383
Ping (ms) ICMP2 london.starlink.taht.net : 1009.28 887.00 ms 1383
Ping (ms) ICMP3 singapore.starlink.taht.net : 1121.09 1012.00 ms 1383
Ping (ms) ICMP4 fremont.starlink.taht.net : 943.77 853.00 ms 1383
Ping (ms) avg : 1025.05 N/A ms 1383
TCP download BE1 de.starlink.taht.net : 1.36 2.00 Mbits/s 1383
TCP download BE2 london.starlink.taht.net : 0.72 0.65 Mbits/s 1383
TCP download BE3 singapore.starlink.taht.net : 1.03 1.74 Mbits/s 1383
TCP download BE4 fremont.starlink.taht.net : 2.11 2.88 Mbits/s 1383
TCP download avg : 1.30 N/A Mbits/s 1383
TCP download fairness : 0.86 N/A Mbits/s 1383
TCP download sum : 5.22 N/A Mbits/s 1383
TCP upload BE1 de.starlink.taht.net : 0.12 0.20 Mbits/s 1383
TCP upload BE1 de.starlink.taht.net::tcp_cwnd : 16.85 14.00 1044
TCP upload BE1 de.starlink.taht.net::tcp_delivery_rate : 0.12 0.12 1036
TCP upload BE1 de.starlink.taht.net::tcp_pacing_rate : 0.35 0.26 1042
TCP upload BE1 de.starlink.taht.net::tcp_rtt : 1128.57 954.47 1020
TCP upload BE1 de.starlink.taht.net::tcp_rtt_var : 68.22 50.08 1020
TCP upload BE2 london.starlink.taht.net : 0.12 0.15 Mbits/s 1383
TCP upload BE2 london.starlink.taht.net::tcp_cwnd : 17.33 11.00 1046
TCP upload BE2 london.starlink.taht.net::tcp_delivery_rate : 0.12 0.11 1041
TCP upload BE2 london.starlink.taht.net::tcp_pacing_rate : 0.38 0.26 1044
TCP upload BE2 london.starlink.taht.net::tcp_rtt : 1166.74 991.48 1043
TCP upload BE2 london.starlink.taht.net::tcp_rtt_var : 79.99 68.27 1043
TCP upload BE3 singapore.starlink.taht.net : 0.07 0.13 Mbits/s 1383
TCP upload BE3 singapore.starlink.taht.net::tcp_cwnd : 13.60 9.00 1042
TCP upload BE3 singapore.starlink.taht.net::tcp_delivery_rate : 0.07 0.08 1013
TCP upload BE3 singapore.starlink.taht.net::tcp_pacing_rate : 0.23 0.20 1031
TCP upload BE3 singapore.starlink.taht.net::tcp_rtt : 1302.23 1129.07 967
TCP upload BE3 singapore.starlink.taht.net::tcp_rtt_var : 113.67 98.84 967
TCP upload BE4 fremont.starlink.taht.net : 0.11 0.20 Mbits/s 1383
TCP upload BE4 fremont.starlink.taht.net::tcp_cwnd : 17.55 11.00 1038
TCP upload BE4 fremont.starlink.taht.net::tcp_delivery_rate : 0.11 0.10 1035
TCP upload BE4 fremont.starlink.taht.net::tcp_pacing_rate : 0.32 0.23 1036
TCP upload BE4 fremont.starlink.taht.net::tcp_rtt : 1094.64 887.54 1033
TCP upload BE4 fremont.starlink.taht.net::tcp_rtt_var : 67.20 59.16 1033
TCP upload avg : 0.10 N/A Mbits/s 1383
TCP upload fairness : 0.96 N/A Mbits/s 1383
TCP upload sum : 0.42 N/A Mbits/s 1383
##########
with smart queue (fq_codel) on the EdgeRouter
flent -x --socket-stats --step-size=.05 -H de.starlink.taht.net -H london.starlink.taht.net -H singapore.starlink.taht.net -H fremont.starlink.taht.net -t fqcodel_erx_rttfair4be_8Mbpsdown_500Kbpsup_centurylinkdsl rtt_fair4be
Started Flent 2.0.0 using Python 3.9.2.
Starting rtt_fair4be test. Expected run time: 70 seconds.
Data file written to ./rtt_fair4be-2022-04-17T150339.549817.fqcodel_erx_rttfair4be_8Mbpsdown_500Kbpsup_centurylinkdsl.flent.gz
Summary of rtt_fair4be test run from 2022-04-17 14:03:39.549817
Title: 'fqcodel_erx_rttfair4be_8Mbpsdown_500Kbpsup_centurylinkdsl'
avg median # data pts
Ping (ms) ICMP1 de.starlink.taht.net : 392.93 208.00 ms 1384
Ping (ms) ICMP2 london.starlink.taht.net : 373.94 196.00 ms 1384
Ping (ms) ICMP3 singapore.starlink.taht.net : 508.15 319.00 ms 1384
Ping (ms) ICMP4 fremont.starlink.taht.net : 346.23 152.00 ms 1384
Ping (ms) avg : 405.31 N/A ms 1384
TCP download BE1 de.starlink.taht.net : 1.36 1.62 Mbits/s 1384
TCP download BE2 london.starlink.taht.net : 1.47 1.63 Mbits/s 1384
TCP download BE3 singapore.starlink.taht.net : 1.55 1.60 Mbits/s 1384
TCP download BE4 fremont.starlink.taht.net : 1.50 1.80 Mbits/s 1384
TCP download avg : 1.47 N/A Mbits/s 1384
TCP download fairness : 1.00 N/A Mbits/s 1384
TCP download sum : 5.88 N/A Mbits/s 1384
TCP upload BE1 de.starlink.taht.net : 0.09 0.85 Mbits/s 1384
TCP upload BE1 de.starlink.taht.net::tcp_cwnd : 4.50 4.00 1035
TCP upload BE1 de.starlink.taht.net::tcp_delivery_rate : 0.08 0.08 1030
TCP upload BE1 de.starlink.taht.net::tcp_pacing_rate : 0.17 0.15 1032
TCP upload BE1 de.starlink.taht.net::tcp_rtt : 458.11 318.82 1027
TCP upload BE1 de.starlink.taht.net::tcp_rtt_var : 95.76 61.88 1027
TCP upload BE2 london.starlink.taht.net : 0.09 0.93 Mbits/s 1384
TCP upload BE2 london.starlink.taht.net::tcp_cwnd : 4.17 4.00 1038
TCP upload BE2 london.starlink.taht.net::tcp_delivery_rate : 0.08 0.08 1033
TCP upload BE2 london.starlink.taht.net::tcp_pacing_rate : 0.17 0.14 1036
TCP upload BE2 london.starlink.taht.net::tcp_rtt : 452.67 322.49 1033
TCP upload BE2 london.starlink.taht.net::tcp_rtt_var : 96.87 64.28 1033
TCP upload BE3 singapore.starlink.taht.net : 0.06 0.44 Mbits/s 1384
TCP upload BE3 singapore.starlink.taht.net::tcp_cwnd : 4.16 4.00 1040
TCP upload BE3 singapore.starlink.taht.net::tcp_delivery_rate : 0.06 0.06 1031
TCP upload BE3 singapore.starlink.taht.net::tcp_pacing_rate : 0.12 0.11 1036
TCP upload BE3 singapore.starlink.taht.net::tcp_rtt : 577.75 438.61 1027
TCP upload BE3 singapore.starlink.taht.net::tcp_rtt_var : 107.05 72.97 1027
TCP upload BE4 fremont.starlink.taht.net : 0.10 1.48 Mbits/s 1384
TCP upload BE4 fremont.starlink.taht.net::tcp_cwnd : 4.45 4.00 1020
TCP upload BE4 fremont.starlink.taht.net::tcp_delivery_rate : 0.09 0.09 1017
TCP upload BE4 fremont.starlink.taht.net::tcp_pacing_rate : 0.21 0.16 1019
TCP upload BE4 fremont.starlink.taht.net::tcp_rtt : 439.05 285.86 1018
TCP upload BE4 fremont.starlink.taht.net::tcp_rtt_var : 81.90 56.33 1018
TCP upload avg : 0.08 N/A Mbits/s 1384
TCP upload fairness : 0.97 N/A Mbits/s 1384
TCP upload sum : 0.34 N/A Mbits/s 1384
EdgeRouter Settings
smart-queue DSL {
download {
ecn enable
flows 1024
fq-quantum 300
limit 10240
rate 8mbit
}
upload {
ecn enable
flows 1024
fq-quantum 300
limit 10240
rate 600kbit
target 15ms
}
wan-interface pppoe0
Also, here's the VMs qdisc settings. Which I now realize probably aren't the best
sysctl -a | grep qdisc
net.core.default_qdisc = pfifo_fast
tc -s qdisc
qdisc noqueue 0: dev lo root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc mq 0: dev eth0 root
Sent 628201 bytes 8643 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc pfifo_fast 0: dev eth0 parent :1 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1
Sent 628201 bytes 8643 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
-Jordan
-----Original Message-----
From: Starlink <starlink-bounces at lists.bufferbloat.net> On Behalf Of Dave Taht
Sent: Saturday, April 16, 2022 9:40 PM
To: flent-users <flent-users at flent.org>; bloat <bloat at lists.bufferbloat.net>; starlink at lists.bufferbloat.net
Subject: [Starlink] an rtt_fair test?
if anyone has a bit of spare time this holiday, I'd like to collect a few results from various networks around the web this week, not just on the turris. Example command line and outputs here:
https://forum.turris.cz/t/sqm-on-turris-flent-benchmarks/17048/
--
I tried to build a better future, a few times:
https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org
Dave Täht CEO, TekLibre, LLC
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