On Fri, Sep 11, 2009 at 2:15 AM, Tobias Sarnowski <sarnow...@new-thoughts.org> wrote: > I am running an OpenBSD 4.6 generic smp amd64 snapshot on a server with a > Realtek 8168 network card. I have problems with identiying the root of my > performance problem. I only get ~500kb/s upstream while downstream is at > maximum speed (tested via ssh and http). > > My hosting company provides me a "rescue" system with FreeBSD. It runs on > the same hardware and hasn't that problem. It gets maximum speed at up- and > downstream (the linux rescue system works as well). > > In addition this problem only occurs from the outer network of the computing > center of my server. I am in close contact with my hosting company but we > can not find any problems.
Have you tried increasing net.inet.tcp.sendspace? FreeBSD's stack is self tuning--OpenBSD's is not.