Pareto Simulator

Simulates a number of incoming requests with response times following a Pareto distribution: a very simple power law distribution.

Installation

Run from your console:

$ npm install -g pareto-simulator

Usage

Now you can run the Pareto simulator as a command:

$ pareto --xm 28

To simulate a search on the mythical 1000 Google servers:

$ pareto --xm 1 -n 1000 --parallel 30 --series 30 --timeout 10 --linear

This simulates a request that branches out to 30 * 30 servers. There are 30 steps, each consisting of 30 parallel invocations. Each service is designed to take at least 1 millisecond, with response times following a Pareto distribution, and with a timeout of 10 ms. The result is a nice linear graph that approaches a normal distribution.

Options

Use --help to see all the options.

The following options are supported:
  -a, --alpha <ARG1>    	Alpha parameter for Pareto ("1.16" by default)
  -x, --xm <ARG1>       	Xm (minimum) for Pareto (required)
  -n, --number <ARG1>   	Number of requests to simulate ("100000" by default)
  -t, --timeout <ARG1>  	Timeout
  -p, --parallel <ARG1> 	Requests in parallel ("1" by default)
  -s, --series <ARG1>   	Consecutive requests ("1" by default)

Acknowledgements

(C) Alex Fernández. Published under the MIT license.