Re: modem speed

[Agustin Navarro <anavarro vip eniac com>]

On Mon, 25 Jan 1999, Steve Borho wrote:

> On Mon, Jan 25, 1999 at 12:16:03AM -0900, Ramon Gandia wrote:
> > Gavin Cato wrote:
> > > 
> > > I whacked a extension into my pp scripts to do something like ,
> > > 
> > > tail -t /var/log/messages | grep CONNECT | awk ' { print $3 } '
> > > 
> > > (or something similar I'm not near the machine)
> > > 
> > > anyway it found out the connect rate, and logged it to a little program
> > > similar to xconsole I wrote up and sat at the bottom of my WM.
> > > 
> > > (was one way of doing it, probably there is a cleaner way)
> > 
> > All of these schemes work, as far as they go.  They report
> > the speed at which the modem connected.  A half hour later
> > the speed could be anything (usually less, as most modems
> > do not negotiate back UPwards).  My understanding was that
> > the gentleman wanted to know the ongoing connect speed of
> > the modem.  
> > 
> > That can only be gleaned with hardware.
> 
> And in many cases, the baud rate reported is either the rate between the
> UART and the modem, or just an outright lie.  The only real way to get an
> accurate measurement of the bandwidth with modern modems is to ping flood
> the remote PPP server and see how much you can push through it (which is
> hardly practical).  It is just like quantum physics.  The act of measuring
> the bandwidth modifies what you are measuring.
> 
> 
I use IPTraf to monitor the trafic and the speed of the connection. I think you
can get more info from: http://cebu.mozcom.com/riker/iptraf

In particular I installed iptraf-1.3.0-1.i386.rpm
-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Agustin Navarro P.
anavarro vip eniac com
58.2.9630746