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Is it possible to calculate the bandwidth required to conduct
the load test from the previous average throughput data?
I guess it might depend on where you are getting the "previous average throughput data" from but, in theory, sure. If you have the average throughput for a single virtual user, more or less all you need to do is multiply by the number of virtual users you will include in your load-test. Obviously you'll need to do some additional math to convert bytes to bits and such but the data's all there for you....
Steave,Thanks for the help.
What you are looking for falls into the category of Modeling and Simulation software. Your example is a great one, but let me pose another set of questions. What if you exhaust your application CPU or memory before you exhaust your network? What if your database tier starts going nuts because and index was forgotten and as load increases the number of tablescans goes through the roof?
If you are interested in looking into modeling and simulations tools in a greater depth, then I would refer to to the site of Hyperformix as a place to start. Use their site for educational material. You may also find their modeling and simulation software to be useful. Note: I do not work for Hyperfomix nor am I compensated in any way from the sale of their software, but I have found their modeling and simulation tools to be extremely useful in the past for answering just the types of questions you pose.
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