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The Design Page

The Design page lets you list and create Virtual Users. A Virtual User (shortened VU) represents a user journey through your application. It lets you simulate a real user behavior.


For each VU, the list displays:

  • The name and description,
  • The creation and edition dates,
  • The number of containers,
  • The number of actions,
  • The type of VU (JMeter or WebDriver).

Virtual Users list actions

Several actions are available when placing your mouse over an existing connection in the list:

Icon Action Description
Duplicate VU Lets you duplicate a VU in one click. You can then edit the duplicated VU.
Delete VU Lets you remove a VU in one click. This operation cannot be reverted so proceed with caution.

Filter Virtual Users

You can filter the displayed VUs using the Filter field:

  1. Simply type the name in the Filter field placed on the upper right corner of the page,
  2. The list bellow will only display the VUs that contains the term in their name or description.

Create a VU

Create VU

To create a new virtual user simply click on the big blue Plus button to display the creation form.

Then there are several methods to create a virtual user:


Record Http Archive


We strongly recommend to record your web application using Fiddler or FireFox as they also record response contents.

HAR Format

HAR is an abbreviation for Http Archive:

The HTTP Archive format or HAR, is a JSON-formatted archival format for logging of a web browsers interaction with a site. The common extension for these files is .har.

Several browser like Chrome or Firefox supports recording HTTP traffic as HAR natively.

HAR import filtered servers

OctoPerf automatically filters servers when you import a HAR:

  • CDNs,
  • advertising,
  • analytics,
  • Google, Facebook, etc.

The complete list is available here.


You can also remove servers after the import if we missed some of them.