Configuration: Systems Under Test: Profiles

Updated

Configuration: Systems Under Test: Profiles

Overview

Use this page to create and manage Systems Under Test (SUT) profiles. A SUT profile is a named group of machines and performance counters that LoadGen monitors for resource usage while a load test runs, so you can see how backend servers behave under simulated load rather than only how the test itself performed.

A profile is only useful once its machines have a LoadGen Agent installed, which you set up on Configuration: Systems Under Test: Machines, and once you've decided whether to apply a reusable counter template from Configuration: Systems Under Test: Templates or add individual counters instead. Once configured, the profile's machines and counters are the source of the performance data that load tests collect and that later appears in dashboards and reports.

This page lists every SUT profile with its current machine and template counts, and lets you create a new profile, open an existing one to edit its machines and counters, or delete a profile you no longer need.

Key concepts

  • Systems Under Test (SUT) profile - A named group of machines and performance counters that LoadGen monitors for resource usage while a load test runs. (related: Configuration: Systems Under Test: Machines)
  • LoadGen Agent - Software installed on a monitored machine that collects Windows Performance Counters and reports them back to LoadGen. (related: Configuration: LoadGen Agents: Full Agents)
  • Windows Performance Counters - Operating-system metrics such as CPU, Memory, and Disk usage that the LoadGen Agent collects from a monitored machine. (related: Configuration: Systems Under Test: PerfCounter Settings)
  • Counter template - A reusable, predefined set of performance counters you can apply to a profile instead of adding counters individually. (related: Configuration: Systems Under Test: Templates)

When to use it

  • You're preparing to run a load test against backend servers and need to monitor their resource usage during the run.
  • You're onboarding a new environment, such as sut-stork-02, and need to register the machines that belong to it.
  • You want to check how many machines or counter templates are currently assigned to an existing profile.
  • You need to update which machines or counters a profile monitors before the next test run.
  • You're decommissioning an environment and need to remove its SUT profile.

Before you begin

  • At least one machine with a LoadGen Agent installed, if you plan to add machines to the profile (set up on Configuration: Systems Under Test: Machines).
  • A counter template, if you want to apply a reusable set of counters instead of adding them individually (created on Configuration: Systems Under Test: Templates).
  • A GlobalAdmin or equivalent configuration permission to create, edit, or delete profiles.

Common workflows

Create a new SUT profile

Persona: Load-test operator or admin

  1. Click Create SUT Profile.
    • Expect: The Create SUT Profile dialog opens with a required Profile Name field.
  2. Enter a name such as sut-stork-02 in Profile Name and click Create.
    • Expect: The dialog closes and the browser navigates to the new profile's detail page, where you add machines and counters.

Verify: Returning to the Systems Under Test page shows the new profile listed by name with a machine count of 0 until you add machines on its detail page.

Delete an SUT profile

Persona: Admin

  1. Click the trash icon in the ACTIONS column for the profile you want to remove.
    • Expect: The Delete SUT Profile confirmation dialog opens.
  2. Click Delete to confirm.
    • Expect: The dialog closes and the profile's row disappears from the table.

Verify: The profile no longer appears in the Systems Under Test table and can no longer be selected for monitoring future load tests.

Steps

Step 1

Open the Systems Under Test page from Configuration.

Expected result: The page loads and lists the existing SUT profiles in a table, each row showing the profile name, a machine count, and a template count, with Refresh and Create SUT Profile buttons above it.

This table is the starting point for creating, reviewing, or removing the SUT profiles that load tests monitor.

  • The info banner explains that each machine needs a LoadGen Agent to collect counters.
  • Create SUT Profile opens the dialog for registering a new profile.
  • Each row's MACHINES and TEMPLATES pills show how fully the profile is configured. Configuration: Systems Under Test: Profiles - step 1

Field reference

Field Purpose Format / Validation Required Default
Profile Name Names the SUT profile so you can identify it in this list and select it correctly when assigning monitoring to a load test. Free text Yes -

Column reference

Column What it shows How to read it
NAME Identifies the SUT profile in the list. Open the row (or its Edit icon) to reach the profile's detail page and manage its machines and counters.
MACHINES Shows how many machines are currently assigned to the profile. A higher count means more servers are being monitored by this profile; 0 means no machines have been added yet, so no performance data will be collected during a load test until you add at least one.
TEMPLATES Shows how many counter templates have been applied to the profile. A higher count means more reusable counter sets are driving what gets collected; 0 means the profile currently has no templates applied, though it may still have individually added counters.
ACTIONS Provides the per-row controls for managing a profile. Use the pencil icon to open the profile for editing and the trash icon to delete it.

Controls reference

Refresh

Reloads the SUT profiles table from the server.

When to use: Use it after making changes elsewhere, or when you suspect the list is out of date, such as after creating or deleting a profile in another browser tab.

Side effects: Read-only: it only re-fetches and redisplays the current list, it does not change any data.

Create SUT Profile

Opens the Create SUT Profile dialog where you name a new profile.

When to use: Use it when onboarding a new environment or server group that needs its own monitoring configuration.

Side effects: Opening the dialog has no side effect by itself; submitting the dialog's Create button creates a new profile record.

Edit (pencil icon)

Opens the selected profile's detail page.

When to use: Use it when you need to add or remove machines, apply a counter template, or review a profile's current configuration.

Side effects: Read-only navigation: it leaves this page but does not itself change any data.

Delete (trash icon)

Opens the Delete SUT Profile confirmation dialog for the selected row.

When to use: Use it to remove a profile for a decommissioned environment or one created by mistake.

Side effects: Opening the dialog has no side effect; confirming Delete inside it permanently removes the profile and its row from the table.

Cancel (Create SUT Profile dialog)

Closes the Create SUT Profile dialog without saving.

When to use: Use it if you opened the dialog by mistake or want to discard the name you typed.

Side effects: Read-only: no profile is created.

Create (dialog button)

Submits the Profile Name and creates the new SUT profile.

When to use: Use it once you've typed a valid Profile Name and want to save it.

Side effects: Mutating: creates a new profile record and navigates you to its detail page.

Cancel (Delete SUT Profile dialog)

Closes the delete confirmation dialog without deleting the profile.

When to use: Use it if you opened the delete dialog by mistake.

Side effects: Read-only: the profile remains unchanged.

Delete (confirm button)

Permanently removes the selected SUT profile.

When to use: Use it only after you've confirmed the profile is no longer needed for any scheduled or active load test.

Side effects: Mutating: deletes the profile and its row disappears from the table; this cannot be undone from this page.

Verify the result

After creating a profile, it appears as a new row in the Systems Under Test table with the name you entered and a machine count of 0 until you add machines on its detail page. Opening the profile (via the Edit icon or by clicking the row) lets you add machines and counters, and the MACHINES and TEMPLATES counts on this page update to reflect that once you return here or click Refresh. If a newly created profile doesn't show up, click Refresh to confirm the save committed rather than assuming it failed. Deleting a profile removes its row immediately; if the row remains after confirming Delete, the deletion likely failed and the dialog should reopen with an error.

Troubleshooting

  • Symptom: The Create button in the Create SUT Profile dialog stays disabled. Fix: Enter a value in the required Profile Name field; it cannot be submitted empty.
  • Symptom: A newly created profile doesn't appear in the table. Fix: Click Refresh to reload the list from the server before assuming the create failed.
  • Symptom: The MACHINES or TEMPLATES count stays at 0 after you've added machines or a template. Fix: Confirm you saved the changes on the profile's detail page, then return to this page or click Refresh.
  • Symptom: Clicking Delete shows an error and the profile remains listed. Fix: Check whether the profile is still referenced by an active or scheduled load test before retrying the delete.
  • Symptom: The table shows no rows at all. Fix: This is the empty state before any profile exists; click Create SUT Profile to add your first one.
Was this article helpful?
0 out of 0 found this helpful