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SubjectRe: TCP capture effect :: estimate queue length ? :: pathchar
On Tue, 15 May 2001, Ralf Baechle wrote:

> On Mon, May 14, 2001 at 11:49:16PM -0400, God wrote:
>
> > Speaking of queues on routers/servers, does such a util exist that would
> > measure (even a rough estimate), what level of congestion (queueing) is
> > happening between point A and B ? I'd be curious how badly congested some
> > things upstream from me are...... I know I can use ping or
> > traceroute ... but they don't report queueing or bursting. Both measure
> > latency and packetloss ... short of stareing at a running ping that is
> > ... <G>
>
> Pathchar, yet another Van Jacobsen toy does this. Unfortunately the old
> and rotten pre-version you can find in ftp.ee.lbl.gov:/pathchar/ is afaik
> the last one. In the past it served me well you find about how ISPs are
> lying ... 100mbit backbone = fast ethernet in their computer room ...
>


pathchar (last I used it), doesn't report queueing or bursting levels. It
is purely a bandwidth estimator (and a dam fine one too!) ... Could be
wrong though, I just don't recall seeing that as feature.



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