Product Documentation

Slowness in server response time

It is common for some client requests to take longer to process than others. The cause could be resource consumption issues or application issues. In a large deployment, it is difficult to determine which application server is causing the delay. With Advanced Analytics, you can view details about these virtual server anomalies by using internal metrics such as time to first byte (TTFB), and then take informed decisions about the corrective action to be taken.

When Advanced Analytics is enabled, it sets dynamic thresholds by defining the normal pattern of traffic. It uses the traffic pattern of your network to define the normal traffic pattern by training the system for a 15-minute window. Advanced Analytics can detect and change thresholds when the normal traffic pattern has changed and the new pattern has become normal for a certain period of time. The response time beyond the set thresholds is displayed as an anomaly on the graph. Currently, retraining for Advanced Analytics is triggered after two minutes of continuous anomalous behavior.

To display the server response time anomalies:

  1. In a web browser, log on to Citrix Application Delivery Management (Citrix ADM).

  2. In User Name and Password, enter the administrator credentials.

  3. On the Application Dashboard, double click the application tile for the application for which you want to view the server delays.

  4. In the App Activity investigator section, select the error legend plotted for Server Delay on the graph.

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  5. From the Server Response Anomaly section, you can view and compare the average response time of the services that caused the server delay, and the response time trend, along with the other details such as Service Name, and Service IP Address.

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  6. You can further zoom on to view the service response time graph for the selected service.

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Slowness in server response time

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