Performance Analytics generates alerts to help administrators to monitor the environment proactively. The alerts are generated when factors affecting the user experience get deteriorated.
Currently, two policies - Machine with Zombie Sessions and Sessions with Anomalous Latency are available in the Alert Policies tab. The alerts are enabled by default, and can be disabled using the Status toggle. By default, all full administrators in the customer are alerted by emails. Click the alert name to edit the mail recipients list.
You must enable receiving email notifications from the Account Settings menu in Citrix Cloud to receive the alert mails. For more information, see the Notifications article.
Alert for Machines with Zombie Sessions
A Zombie session alert mail is generated when a new machine with a zombie session is detected in the environment in a 15 mins interval.
An email alert containing details of the number of machines with zombie sessions and sessions failures that have resulted due to zombie sessions is sent to the administrators. The numbers in the mailer are for the last 15 min interval.
Click View machines in the mailer to see single-session machines with abandoned sessions in the Self-service view for Machines with Zombie Sessions. The view reflects the 15 min interval as per the mailer, use the time navigator to choose a larger time window.
Realerting on the same machine is done only if the same abandoned session persists on the same machine for over 24 hours from the initial detection.
Alert for Sessions with Anomalous Latency
Poor in-session responsiveness is the primary cause for poor session experience. The Anomalous Latency Alerts feature alerts administrators when there is a significant deviation in the session latency values. The proactive alerting helps administrators identify specific locations or Delivery Groups from which poor sessions might be originating.
A machine learning model is used to determine the baseline latency value for all Delivery Group-Location pairs in a specific customer. The baseline latency value is calibrated every day based on the data from the last three days. Any outlier measurements of ICARTT are ignored. If the measured ICARTT has a deviation of 60% or more from the baseline latency value, an alert is generated. The amount of deviation quantifies the impact of the poor latency on the session experience for these users.
The next alert is generated when the ICARTT measurements are higher than the last known value.
This feature requires you to configure your StoreFront servers to enable Citrix Workspace app to send events to Citrix Analytics. Follow the steps as described in Onboard Virtual Apps and Desktops Sites using StoreFront.
The mail contains the following details for a specific customer, Delivery Group, and Location,
- Latency, the ICARTT value measured in the specified period
- Delivery Group of the virtual machine
- Location of the endpoint
- Median Latency and its variation from the baseline.
- Number of sessions affected by poor responsiveness
- Percentage variation of measured latency from the baseline value.
Click View Issue Details to go to the Sessions self-service view with the list of sessions that were affected by poor responsiveness. Analyze the fields showing such as the Location, ICARTT, ISP, Bandwidth, and Latency metrics for a specific session to root cause the issue. For more information about the indicators available in the sessions based self-service view, see Self-service search for sessions.