RE: [PHP-WIN] Bandwidth for webhosts

Oh, oh, oh =8) I really think they mean a Traffic of 10GB !! Hope this helps. Greetinx, Mike Michael Rudel - Web-Development, Systemadministration - _______________________________________________________________ Suchtreffer AG Bleicherstraße 20 D-78467 Konstanz Germany fon: +49-(0)7531-89207-17 fax: +49-(0)7531-89207-13 e-mail: mailto:mru@suchtreffer.de internet: http://www.suchtreffer.de _______________________________________________________________ > -----Original Message----- > From: Svensson, B.A.T. [mailto:B.A.T.Svensson@lumc.nl] > Sent: Thursday, April 26, 2001 2:16 PM > To: php-windows@lists.php.net; 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 > > -- > PHP Windows Mailing List (http://www.php.net/) > To unsubscribe, e-mail: php-windows-unsubscribe@lists.php.net > For additional commands, e-mail: php-windows-help@lists.php.net > To contact the list administrators, e-mail: > php-list-admin@lists.php.net >