How to calculate bandwidth requirement

[James Jones]

Sarang,

I had to accomplish a similar issue a number of years  ago at a different
job.  How I solved the problem was to put up a test environment with my test
users on one hub, a single link to another hub which the server was
attached, measured the traffic flow over a period of time then used some
basic statistics to extrapolate out, added a fudge factor and hoped we were
correct.  We installed the required lines to the ISP which I believe were 2
t1s at the time, and hoped we were right.   We were okay for about 2 years
before we had to upgrade because of traffic load.  The process was crude and
with more money I could have setup a more exact testing environment which
would have yielded better results.  Measuring system and traffic performance
is a art as well as a science, IMHO.

jim

On Fri, Nov 13, 2009 at 3:00 AM, lonetwin <lonetwins at gmail.com> wrote:

> Hello everyone,
>
>   we have developed a webapplication which will be put into production
> soon. We expect close to a 1000 users to have access to the webapplication
> and assume 300 ( 30%) users to be using it at a given point of time. We
> have
> tomcat taking care of the UI and jboss is the application server with mysql
> as the db.
>
> Now we want to calculate the bandwidth that will be needed for this
> application to be accessed by the 300 users. We are going to host it in our
> premises, and want to know what is the bandwidth that we will have to get
> from our ISP so that all users are able to access our application.
>
> Any help/idea on this ?
>
> thanks,
> Sarang
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-- 
James R. Jones
System Manager
UAF-BBC
PO Box 1070
Dillingham, AK 99576
907-842-8312