By your command
Rebooted to rerun qdisc script, rather than changing qdiscs from the
command-line, so suboptimal process as end-point changed.
script configuring qdiscs and overhead 40 on
sh netperfrunner.sh -H netperf-eu.bufferbloat.net -p 2.96.48.1
2015-07-10 18:22:08 Testing netperf-eu.bufferbloat.net (ipv4) with 4
streams down and up while pinging 2.96.48.1. Takes about 60 seconds.
Download: 6.73 Mbps
Upload: 0.58 Mbps
Latency: (in msec, 62 pings, 0.00% packet loss)
Min: 24.094
10pct: 172.654
Median: 260.563
Avg: 253.580
90pct: 330.003
Max: 411.145
script configuring qdiscs on flows raw
sh netperfrunner.sh -H netperf-eu.bufferbloat.net -p
78.145.32.1
2015-07-10 18:49:21 Testing netperf-eu.bufferbloat.net (ipv4) with 4
streams down and up while pinging 78.145.32.1. Takes about 60 seconds.
Download: 6.75 Mbps
Upload: 0.59 Mbps
Latency: (in msec, 59 pings, 0.00% packet loss)
Min: 23.605
10pct: 169.789
Median: 282.155
Avg: 267.099
90pct: 333.283
Max: 376.509
script configuring qdiscs and overhead 36 on
sh netperfrunner.sh -H netperf-eu.bufferbloat.net -p
80.44.96.1
2015-07-10 19:20:18 Testing netperf-eu.bufferbloat.net (ipv4) with 4
streams down and up while pinging 80.44.96.1. Takes about 60 seconds.
Download: 6.56 Mbps
Upload: 0.59 Mbps
Latency: (in msec, 62 pings, 0.00% packet loss)
Min: 22.975
10pct: 195.473
Median: 281.756
Avg: 271.609
90pct: 342.130
Max: 398.573
On 10/07/15 16:19, Alan Jenkins wrote:
I'm glad to hear there's a working version (even if it's not in the
current build :).
Do you have measurable improvements with overhead configured (v.s.
unconfigured)?
I've used netperfrunner from CeroWrtScripts, e.g.
sh netperfrunner.sh -H netperf-eu.bufferbloat.net -p $ISP_ROUTER
I believe accounting for overhead helps on this two-way test, because
a) it saturates the uplink b) about half that bandwidth is tiny ack
packets (depending on bandwidth asymmetry). And small packets have
proportionally high overhead.
(But it seems to only make a small difference for me, which always
surprises Seb).
Alan
On 10/07/15 15:52, Fred Stratton wrote:
You are absolutely correct.
I tried both a numeric overhead value, and alternatively 'pppoe-vcmux'
and 'ether-fcs' in the build I crafted based on r46006, which is lupin
undeclared version 2. Everything works as stated.
On lupin undeclared version 4, the current release based on r46117, the
values were not recognised.
Thank you.
I had cake running on a Lantiq ADSL gateway running the same r46006
build. Unfortunately this was bricked by attempts to get homenet
working, so I have nothing to report about gateway usage at present.
On 10/07/15 13:57, Jonathan Morton wrote:
You're already using correct syntax - I've written it to be quite
lenient and use sensible defaults for missing information. There are
several sets of keywords and parameters which are mutually orthogonal,
and don't depend on each other, so "besteffort" has nothing to do with
"overhead" or "atm".
What's probably happening is that you're using a slightly old version
of the cake kernel module which lacks the overhead parameter entirely,
but a more up to date tc which does support it. We've seen this
combination crop up ourselves recently.
- Jonathan Morton
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