Generates rayleigh distribution using Jmeter

Question

I try to simulate http workload that obeys rayleigh distribution. I wish to use jmeter for that. I know how to utilize the Poisson and Gaussian Random Timers and I wonder if you have an idea of how to use a raleigh-based timer.

Thanks,

Answer 1

You would need to implement the algorithm using for example:

• JSR223Timer
• Groovy as a language in the timer
• And one of those algorithm implementations: How to generate a random number with a specific probability density function?

EDIT 2/08/2016:

You used the BeanShell (JSR223+Groovy would perform much better) option to utilize the Apache commons.math3 library.

Sample code:

import org.apache.commons.math3.distribution.WeibullDistribution; 
alpha = Integer.parseInt(vars.get("alpha")); 
beta = Integer.parseInt(vars.get("beta")); 
rng= Integer.parseInt(bsh.args[0]); 
try { 
    WeibullDistribution g= new WeibullDistribution(rng, alpha,beta);    
    return g.sample(); 
} catch (Throwable ex) { 
    log.error("Something wrong", ex); 
    throw ex; 
}