To assign unique random numbers to all the virtual users in a test, you can create a
random number data source in the workbench. This data source will generate unique integers
or floating point numbers for the users or clients. You can choose to distribute the numbers
of the virtual users or clients in a uniform, normal, or negative exponential
way.
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In the Test editor, select the root node (name of the test) and from the Test
Details area, select Built-in Datasources.
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Select the Random Number data source and click
Add Built-in Datasource.
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Type a name for the data source.
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Select how do you want to generate the numbers:
- Uniform: Click this option to generate random
numbers with a uniform distribution. Specify the minimum and maximum
values for the generated numbers.
- Normal: Click this option to generate random
numbers with a normal or Gaussian distribution. Specify the average and
the standard deviation for the generated numbers.
- Negative Exponential: Click this option to
generate random numbers with an exponential distribution. Specify the
average for the generated numbers.
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Select how do you want to format the numbers. You can select
Common to format the numbers in decimal or scientific
notations.
You can choose Custom to specify a Format
mask by using the standard Java formatting syntax. The changes
that you specify can be previewed in Formatted
output.
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To substitute the built-in data source every time with a new value for the
requests, select the Get new value each time used check
box.