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Re: AW: UDP Badness [Was: Re: How to measure networkquality&performance for voip&gameservers (udp packetloss, delay,jitter,...)]

  • From: David Nolan
  • Date: Tue Mar 07 13:12:54 2006




--On Tuesday, March 07, 2006 18:59:27 +0100 Gunther Stammwitz <[email protected]> wrote:

You are right - but there must be some sort of tool that can generate udp
packets at a specified rate (or bandwidth) and measure if they are
arriving in order, if there is loss and what the jitter is or something
like that. Does anyone know some kind of tool?
iperf. http://dast.nlanr.net/Projects/Iperf/

I regularly use iperf to stress test various network components. In TCP mode it will show you how fast a tcp stack can negotiate to, in UDP mode it can throw packets at a fixed rate and the server can tell you how many it got.

There is also NDT, http://e2epi.internet2.edu/ndt/, but that requires a kernel with the web100 patches to instrument the kernel network stack.


-David Nolan
Network Software Designer
Computing Services
Carnegie Mellon University