1) The research into whether bit flipping to the extent that SCE will do has not been done yet. The study of ECT(0) vs ECT(1) behavior transiting to CE was a little lightweight.
To test this we going to fire up a ton of nanodes in various data centers, with low SCE thresholds, and low bandwidths, to flip lots of bits, and test between the data centers and from as many vantage points around the net as we can get - do packet captures as well as flent tests as a control, set up identical boxes, with SCE disabled, in the same data centers. Setup flent, irtt, iperf3. 2) Diffserv bit preservation test The research going by on the tsvwg mailing seems a bit dated. It is very straightforward to use irtt to test to see what udp codepoints survive e2e, and to also leverage this testbed setup. Similarly, netperf can easily be used to mark tcp. We do not have a good packet cap tool to verify that the bits are being set right, however I think irtt can be modified to check for correctness here and produce a report. On Sun, Mar 24, 2019 at 1:45 AM Jonathan Morton <[email protected]> wrote: > > > On 24 Mar, 2019, at 8:37 am, Pete Heist <[email protected]> wrote: > > > > I should theoretically arrive at the boat today some time after 3pm, having > > picked up a mini HDMI to HDMI adapter, which we can use with the cable > > that’s there… > > Awesome. I'm also setting up a Linux VM on my Mac, which should help things > along. > > We're bringing up some actual hardware with the SCE-enabled Cake on it now. > Dave wants to investigate various theoretical phenomena the Internet might > exhibit with a mixture of ECN codepoints; I just want to be sure it actually > works as intended, before I move on to fiddling with TCP. > > - Jonathan Morton > > _______________________________________________ > Cake mailing list > [email protected] > https://lists.bufferbloat.net/listinfo/cake -- Dave Täht CTO, TekLibre, LLC http://www.teklibre.com Tel: 1-831-205-9740 _______________________________________________ Cake mailing list [email protected] https://lists.bufferbloat.net/listinfo/cake
