Fwd: [PLUG] TCP window, how to adjust?

[Bill Barry]

On 11/4/05, Steven Raymond <stever at woo-hoo.com> wrote:
> How can I see what my size Linux TCP receive window is, when running a CLI
> ftp client to a get a file from a server?
>
> Am troubleshooting some throughput questions and want to adjust my TCP
> window, or at least see what my Linux machine is using &/or negotiating on
> a per-download basis.  Hopefully I can adjust the window manually for
> testing.  Note these are all client sessions, not worried about using the
> machine as a server.
>
> More specifically am trying to find a formula or algorithm that will
> predict download throughput with a given bandwidth, TCP window, and
> measurable latency.
>
> Thanks!

Ethereal is a good tool for watching the tcp negotiation. The tunable
parameters that are available are discussed in
/usr/src/linux/Documentation/networking/Configurable

Bill Barry