Daniel Melameth wrote:
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.
I tested it now with various connections and the only thing I saw was a
small decrease of speed.
I also found that nice little script http://proj.sunet.se/E2E/tweak.pl
which calculated me an optimal size of 42734. I don't know if it is
outdated or not conform with OpenBSD but I tried it and nothing changes
(speed wise). My OpenBSD has a default value of 16384.
