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.

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