Re: delay calculation

[Marc Herbert <marc.herbert --at-- free.fr>]

On Wed, 2 Nov 2005, Jeff W. Boote wrote:

> Nicolas Schmerber wrote:
> > Hello,
> >
> > I'm new in networking and iperf usage. And I need a little bit help.
> > For a script project  I must get this values from site A to site B :
> > Jitter delay, %loss pkts, and delay (not simple RTT)
>
> iperf does not do one-way delay. One-way delay measurements take a bit more
> effort than the rest of these. Your end systems need to have accurately
> synchronized clocks.

However you don't need synchronized clocks to measure one-way delay
_variations_ (one-way _jitter_), and I think that's what iperf does in
UDP mode?