Citrix Application Delivery Management service

Select App Score components and set thresholds

In App Dashboard, as an administrator, you can decide to select the components and configure thresholds for app score calculation. App Score is the scoring system that defines:

  • How well an application is performing

  • Whether the application is performing well in terms of responsiveness

Navigate to Applications > Dashboard and then select the settings icon.

App score setting

In the Configure App Score page, you can select the components and configure thresholds to determine the final app score.

App score components

App Score calculation is based on the following components:

App Score components User configured thresholds Description
Memory usage Yes The low and high threshold value for the total memory usage in the Citrix ADC instance
Surge queue buildup Yes The low and high threshold value for the total surge requests that are in queue and need a response.
CPU usage Yes The low and high threshold value for the total CPU usage in the Citrix ADC instance.
Response time Yes The time interval between sending a request packet and receiving the first response packet from the service configured on the virtual server.
Active services Yes The threshold value of the percentage of services that must be active which are bound to the virtual server.
Improper persistence type No Indicates if the persistence usage on a virtual server is low.
Server error (5xx) No Indicates if the web server responds with 5xx errors.
Unusually large HTTP packets No Indicates the occurrences, if the HTTP messages with HTTP header size exceed the configured values in the Citrix ADC instance.
SSL real time traffic No Analyzes the SSL traffic to identify real time traffic and suggests optimal configuration settings for improving latency.
SSL session buildup No Indicates the session build-up over a period of time, which can lead to a large amount of memory being held up by these sessions in the Citrix ADC instance.
Low session reusage No Indicates if the actual number of sessions being reused by the Citrix ADC instance is less.
NIC card saturation No Indicates the total packets discarded by the interfaces.
TCP reassemble queue limit hits No Indicates if the Out-of-Order packets on a TCP connection exceed the configured out of order packet queue size.

By default, all components are enabled. If you disable any component, Citrix ADM performs the final app score calculation only based on the selected components.

Note

You can also continue to configure thresholds by navigating to Analytics > Settings and clicking Configure App Score.

Select App Score components and set thresholds