ADSL Bandwidth Monitoring

[RW]

On Sat, 8 Sep 2007 15:30:57 -0700
"Ted Mittelstaedt" <tedm at toybox.placo.com> wrote:

> 
> 
> > -----Original Message-----
> > From: owner-freebsd-questions at freebsd.org
> > [mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Amitabh
> > Kant Sent: Saturday, September 08, 2007 12:25 PM
> > To: Bahman M.
> > Cc: freebsd-questions at freebsd.org
> > Subject: Re: ADSL Bandwidth Monitoring
> >
> >
> > On 9/8/07, Bahman M. <b.movaqar at adempiere.org> wrote:
> > > I tested the connection by downloading 2~3 files simultaneously
> > > and used 'bmon' as Mel suggested in another reply (thanks to
> > > him).  As I'd already guessed the RX don't get bigger than 30~40%
> > > of the expected bandwidth.  I performed the test with some other
> > > files and there was no difference.
> > >
> > > Thanks,
> > >
> > > Bahman
> >
> > The bandwidth being advertised by your ISP would be the maximum
> > thoughput allowed on your DSL lines with multiple DSL users sharing
> > the same bandwidth, something that is generally known as contention
> > ratio.
> 
> Rubbish.  I work for an ISP and this is nonsense.  DSL is not a
> shared medium until it gets to the ISP and the ISP should be able
> to handle full rate circuits internally.

DSL is organized in different ways in different parts of the world,
and contention ratio is certainly an issue in some places. 

The OPs email address domain is registered from  addresses in Malaysia.
Unless you've worked for ISPs in the country where his DSL is located,
your experience isn't very relevant.

I'm not saying that his problem is due to contention ratio, just that
there is as yet no grounds to dismiss the suggestion as rubbish.