On Mon, 2018-01-22 at 09:28 -0800, Ben Greear wrote: > My test case is to have 6 processes each create 5000 TCP IPv4 connections to > each other > on a system with 16GB RAM and send slow-speed data. This works fine on a 4.7 > kernel, but > will not work at all on a 4.13. The 4.13 first complains about running out > of tcp memory, > but even after forcing those values higher, the max connections we can get is > around 15k. > > Both kernels have my out-of-tree patches applied, so it is possible it is my > fault > at this point. > > Any suggestions as to what this might be caused by, or if it is fixed in more > recent kernels? > > I will start bisecting in the meantime... >
Hi Ben Unfortunately I have no idea. Are you using loopback flows, or have I misunderstood you ? How loopback connections can be slow-speed ?
