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This calculator is intended to solve resource utilization equations for systems.
They can be any kind of a system that involve transactions being processed by a set of resources.
The current implementation solves for one special class of queues only (M/M/m queues for the literati).
The underlying assumption is that the transactions are all statistically similar in their use of resources.
Other cases are being added; systems that process many different types of transactions are next on the agenda.
The application was written for the Google App Engine, a new offering and is being
hosted at Google's servers. Google hasn't announced all the terms and conditions
of continued usage of their services and the application may disappear without much notice.
Fair warning: the UI is a little fragile in places.
However, the numbers it produces have been validated and found accurate for all of our test cases.
If you need an example, more detailed usage Instructions are available.