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About Load Profiles

You use load profiles along with the load type to specify how LoadUI NG should simulate virtual users. This helps you test how your server handles varying load.

For information on different load simulation strategies, see Testing Scenarios.

Changing the Selected Load Profile

To change the selected load profile:

  • Switch to the Load page.
  • Select a load scenario. The scenario inspector will appear on the right.
  • Select the load profile you need from the drop-down list.

Selecting a new load profile

Available Load Profiles

The way in which a load profile works depends on the load type your test is using - VUs or Rate.

VUs

Profile Description
Fixed Simulates the specified number of virtual users during the entire test run.
Burst Runs a load test with sudden load increases.
Ramp Up Runs a load test with the load increase over time.
Ramp Sequence Runs a load test with several load increases and decreases over time.
Random Runs a load test with the number of users simulated according to random value generators.
Variance Runs a load test with the number of users simulated according to mathematical waveforms, for example, sine or saw waves.
Custom Runs a load test with custom load shape.

Rate

Profile Description
Fixed Simulates a permanent number of users arriving to the tested server per unit of time.
Burst Runs a load test with sudden increases in the speed of virtual user arrival.
Ramp Up Runs a load test with the load speed increase over time.
Ramp Sequence Runs a load test with several increases and decreases in the user arrival speed over time.
Random Runs a load test, in which the rate of virtual user arrival changes according to random value generators.
Variance Runs a load test, in which the rate of virtual user arrival changes according to mathematical waveforms, for example, sine or saw waves.
Custom Runs a load test with user-defined rate changes.
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