[Cerowrt-devel] Linksys wrt1900acs rrul traces
smithbone at gmail.com
Thu Apr 7 09:58:43 EDT 2016
A while ago I mentioned that I purchased a Linksys wrt1900acs and I was
going to do some comparisons of speed/rrul for stock firmware and stuff
It took a while to happen but I finally got it done. I was stalled for
a long time because for a while OpenWRT was not complete for this
router. It would boot but you could not (easily) return to the factory
firmware as updates via the OpenWRT web interface did not work.
Command line updates still worked though periodically I would build dd
head and see if it got fixed. Finally one weekend I decided to dig in
and figure out what was going wrong and discovered that someone else
beat me to it and it all was working now.
The following flent rrul runs were run here on my local Gbit network
(pretty quiet) using with OpenWrt Designated Driver r49051 / LuCI Master
(git-16.081.38806-6b9a743) + Cake installed.
Cake installed via the instructions here:
For these tests I had the inbound and outbound limits set to 975000
kbps. 975000 was somewhat arbitrary. I wanted it below 1Gbps enough
that I could be sure it was the router as the limit but yet fast enough
that I would be able to see the peak transfer rates.
Test setup is:
Laptop<-->wrt1900acs<--->Gbit Switch<--->Netperf server
Prior to running the tests I did trial runs without the wrt1900acs in
the chain to verify every thing worked at Gbit speeds.
I ran the rrul test for each of the SQM settings at least 5 times. For
layer cake and piece of cake each had a run with results that were way
off from the previous run. I'm assuming this is some yet to be fixed
issue and so I ran it 1 more time so that there were 5 runs with similar
All the raw files are in this tarball:
Hope this is helpful. I'll be happy to run any additional tests if
someone wants more.
Richard A. Smith
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