Applies to ReadyAPI 2.8, last modified on August 16, 2019

The Random load profile simulates the randomly varying number of virtual users (VUs load type) or arriving virtual users (Rate load type).

API load testing with ReadyAPI: Random profile

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Depeneding on a load type, the Random profile has different options. See the table below to learn more:

Load Type Option Description
VUs Base VUs The mean number of users simulated during the test.
Random factor The difference between the minimum and maximum numbers of simulated users in percentage of Base VUs, rounded up.
Distribution The type of distribution.
Wait time The time to wait before restarting a virtual user.
Rate Base arriving users The mean number of users starting the test per unit of time during the test.
Random factor The difference between the minimum and maximum numbers of users starting the test per unit of time during the test.
Distribution The type of distribution.

Requirements

To use this load profile, you need a LoadUI Pro license. If you do not have it, you can request it on our web site or start a trial.

Distribution Types

When using the Random profile, you can choose what type of random distribution will be simulated:

  • Select the Uniform distribution to keep the average number of users to the specified value across the test.

  • Select the Exponential distribution to mainly simulate a low load across the test with some points of high load.

  • Select the Gaussian distribution to mainly simulate an average load across the test with a bit of high and low load.

Random Factor

Random Factor determines the maximum difference between the minimum and maximum loads. For example:

  • If you have 10 simulated virtual users and 100% Random Factor, the spread will be 10 virtual users, so the minimum load will be 5, and the maximum load – 15.

  • If you set Random Factor to 200%, the minimum load will always be 0 virtual users.

  • If Random Factor is above 200%, the random value may be negative. In this case, 0 virtual users will be simulated.

See Also

Fixed Profile
Burst Profile
Ramp Up Profile
Ramp Sequence Profile
Variance Profile
Custom Profile

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