On Fri, 2017-11-03 at 14:28 -0400, Vitaly Davidovich wrote: > So Eric, while I still have your interest here (although I know it's > waning :)), any code pointers to where I might look to see if a > specific small-ish rcv buf size may interact poorly with the rest of > the stack? Is it possible some buffer was starved in the client stack > which prevented it from sending any segments to the server? Maybe the > incoming retrans were actually dropped somewhere in the ingress pkt > processing and so the stack doesn't know it needs to react to > something? Pulling at straws here but clearly the recv buf size, and a > somewhat small one at that, has some play. > > I checked dmesg (just in case something would pop up there) but didn't > observe any warnings or anything interesting.
I believe you could reproduce the issue with packetdrill. If you can provide a packetdrill file demonstrating the issue, that would be awesome ;)
