Oh, oh, oh =8)
I really think they mean a Traffic of 10GB !!
Hope this helps.
Greetinx,
Mike
Michael Rudel
- Web-Development, Systemadministration -
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> -----Original Message-----
> From: Svensson, B.A.T. [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, April 26, 2001 2:16 PM
> To: [EMAIL PROTECTED]; PHPWIN
> Subject: RE: [PHP-WIN] Bandwidth for webhosts
>
>
> >Hi there
> > was wondering if anyone could tell me what it means when a
> >web host says that you get something like 10GB bandwidth for
> >web visitors/hits?
>
> That's a very strange way to put things... I think that
> person who stated that actually need to explain what
> (s)he meant with that.
>
> >How do they calculate the bandwidth?
>
> Bandwidth is a measurement of how much information (theoretical)
> that could be put through a communication channel. It has the
> dimension <information bits>/<time units>.
>
> A communication channel can be something physical, like a
> copper or fiber cable or a little more abstract physical
> things like a transmission wave (electromagnetic waves,
> a.k.a. radio waves).
>
> But the bandwidth could also be referring to an abstract
> communication channel in a physical communication channel.
> This is done by dividing the physical channel into several
> subchannels, these subchannels will then have there own
> bandwidth. But the sum of the subchannels bandwidth can
> never exceed the total bandwidth of the physical channel.
>
> Hence bandwidth is the measurement of how much information
> you maximal can send through a communication channel of
> any sort. Just because the bandwidth could be measured
> to be X with a certain communication channel does NOT
> mean that you will have a TRANSMISSION rate of X.
>
> Normally you will suffer with the transmission rate,
> because of things like overhead information (like
> information that belongs to the transmission protocol
> and error correction performed by the transmission
> protocol).
>
> If you reach a transmission rate of about 90% of the
> bandwidth, then you should be happy. BUT this is not
> entirely true: some transmission protocol can compress
> data, and then you will have a VIRTUAL transmission rate
> that actually can exceed the bandwidth of the channel!!
> But the PHYSICAL transmission rate of the compressed
> data can NEVER exceed the bandwidth of the channel.
>
> Well, anyhow we have to relate this to your question too.
>
> You question was: 'How can they calculate this?'
>
> As you understand from my explanation, they CAN NOT
> calculate a bandwidth like that, since it violates the
> definition of what a bandwidth actually are. But they
> can, on the other hand, calculate a sort of "transmission
> rate" on the channel.
>
> And this might simply be calculated as:
>
> <number hits> * <number of bits to perform a hit> / <time>
>
>
> Regards,
> Anders - which are sorry for this off topic message
>
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