To simplify monitoring servers and load agents, you can define threshold rules. A threshold is a borderline value associated with a performance counter. When the actual value of the counter crosses the borderline, an event is triggered. Such events are registered and presented as part of performance analytics.

Thresholds can be created for any of the server or agent performance counters. To create a threshold rule, follow these steps:

  1. Select a server or agent performance counter 
  2. In the property grid, Set Enable Threshold property to Yes.
  3. Enter two threshold values: Warning Threshold to monitor warnings and Critical Threshold to track errors.
  4. If thresholds reflect high-values, set Alert if Over to Yes to indicate that exceeding a limit is a problem. If thresholds reflect low-values, set Alert if Over to No to indicate that falling below a threshold is a problem.


During a load test execution, you can analyze violations that occur for the configured threshold rules. Results of threshold monitoring are presented in the Runtime Dashboard and test reports on the curve grid below the performance counter graph. Warnings are displayed in orange (a); errors are displayed in red (b).

Curves on which the threshold is defined will display warning violation as orange triangles(c) and critical violations as a red crosses (d).


  • No labels