Seeing the marks visually would be useful, even if it’s just to look at how the AQM marks it for now. It looks like tcptrace currently puts the text “CE” and “CWR CE” in the time-sequence graphs. This is where you’d want to see “SCE”?

Otherwise, I could extract the bits from Go and use some plotting lib or make a csv. I’ve had to parse pcaps before (https://github.com/heistp/wanonpcap). I just don’t know if you need to see the ECN bits alongside window sizes or other things...

On Mar 16, 2019, at 3:58 PM, Jonathan Morton <chromatix99@gmail.com> wrote:

Also, a version of tcptrace that can plot SCE activity would be valuable.  A plot of SCE marking proportion observed on the forward path, and some indication of any feedback path that exists.

- Jonathan Morton