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Bandwidth Calculations
It is often unclear exactly how bandwidth is
calculated. Questions such as how many GB do you
get from a 1Mbps pipe and what is 95th percentile
are often very difficult to find out true answers.
Below we hope to provide you with the information
you need to make the right choice on your requirements.
Q: How many GB do you get from
1Mbps pipe ?
There are a couple of different answers to this
question. Depending on whether you are capped
or not will make a difference on the amount of
traffic you can realistically get from your connection.
If your connection is limited and does not have
a burst, then this means when your traffic tries
to go above 1Mbps it will just be limited. None
of your clients will be disconnected, the traffic
will just slow down.
Below is an example graph of a 512Kbps pipe capped.
The theoretical amount is different to the actual
amount you are likely to be able to put through
your connection if it is capped.
Theoretical amount is approx 330GB.
Under normal traffic you would not be able to
sustain this because of fluctuations in traffic.
So typically the actual amount you can put through
without it effecting your traffic is around 2/3,
which is 220GB.
Q: What is 95th percentile and
how is it calculated?
95th percentile is used as a bandwidth calculation
when you have the ability to burst, i.e. it is
not capped. This is the standard method of calculating
bandwidth usage. The calculation is done by working
out what bandwidth you under for 95% of the time.
The graph below shows you what a typical connection
can look like and where the calculations are:
Although the peak is at 884, the actual charging
rate would be 377Kbps. This means they can have
a 512Kbps connection and not be charged extra,
but when there is high demand there are no restrictions.
All graphs are based on a 5 minute average and
calculations are made from this.
If you would like to get a connection from us
or would like this explained further, please call
our sales team on 0870 750
4906 or
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