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Foglight for Citrix XenDesktop and XenApp 5.6.16.1 - User Guide

Getting Started Setting Up Data Collection Agents Monitoring the Performance of your XenDesktop Environment

Monitoring Sessions

When an end user obtains access to a virtual desktop, this results in a desktop session. A session is a specific instance of an end user’s activity. For those desktops that are monitored by NetScaler agents, you can monitor their sessions. To do that, select the Sessions tile on the XenDesktop Environment dashboard. The information appearing in the XenDesktop Session Quick View can help you discover potential resource-level issues such as high session counts, and to reallocate resources where they are most needed.
 
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TIP: For more information about XenDesktop Session agents, see Creating NetScaler Agent Instances .
Figure 91. XenDesktop Session Quick View
To explore Sessions:
1
On the navigation panel, under Dashboards, click XenDesktop Environment.
2
On the XenDesktop Environment dashboard, on the Monitoring tab, click the Sessions tile.
3
In the XenDesktop Session Quick View, in the Sessions view on the left, click Session Overview.
The XenDesktop Session Quick View refreshes, showing the Summary - Session Overview view on the right.
Figure 92. Summary - Session Overview
This view identifies the virtual machines that consume the highest amounts of system resources. For more information, see Observing the Session Overview.
4
In the Sessions view, under Desktop Session, click a desktop session.
The XenDesktop Session Quick View refreshes, showing the Summary - Session view on the right.
Figure 93. Summary - Session view
This view displays detailed information about the selected session, such as the session name and type, user logon information, and session performance details. For more information, see Investigating Session Details.

Observing the Session Overview

A session is a specific instance of an end user’s activity with a virtual desktop. You can view the performance of desktop or application sessions when you create and configure NetScaler agents to collect ICA (Independent Computing Architecture) session information from monitored Citrix® NetScaler® gateways using Citrix® AppFlow®. For more information about XenDesktop Session agents, see Creating NetScaler Agent Instances .
To get a good understanding of which desktops or applications consume the highest amounts of system resources, use the Summary - Session Overview view. For example, high peaks in the Session Metric Chart can indicate a sudden increase in the end-users’ activity that may result in compromised performance. This view can help you discover potential resource bottlenecks, and to reallocate resources where they are most needed.
Figure 94. Summary - Session Overview
 
Table 9. Summary - Session Overview
Overview
Displays the session counts over the monitored time range. The Session Count line in the Session Metric Chart shows the number of all sessions. Desktop Session Count represents the number of desktop sessions, while Application Session Count is the number of application sessions, all during the monitored time range.
Figure 95. Overview
Top Session Count by User
Identifies the users with the highest number of sessions. Each line in the table shows the user name, the trend in the counts of sessions initiated by that end user, and the current number of sessions that user is running.
Figure 96. Top Session Count by User view
Top Sessions - ICA RTT
Identifies the ICA sessions with the highest round-trip time (RTT). Each line in the table shows the session name, its type (Desktop or Application) and its ICA RTT.
Figure 97. Top Sessions - ICA RTT view
Top Sessions - WAN Latency
Identifies the sessions with the highest WAN latency. Each line in the table shows the session name, its type (Desktop or Application) and its WAN latency.
Figure 98. Top Sessions - WAN Latency view
Top Sessions - WAN Transfer Rate
Identifies the sessions with the highest WAN data transfer rates. Each line in the table shows the session name, its type (Desktop or Application) and the data transfer rate over the WAN.
Figure 99. Top Sessions - WAN Transfer Rate view
Top Sessions - Packets Retransmission
Identifies the sessions with the highest packet retransmission rates. Data packets are typically re-sent after being lost or damaged. High data retransmission rates are typically caused by network congestion. Each line in the table shows the session name, its type (Desktop or Application) and the data transfer rate over the WAN.
Figure 100. Top Sessions - Packet Retransmission view

Investigating Session Details

Information about a specific session can give you a good understanding about the end-user’s experience with virtual desktops and applications. NetScaler agents collect data about specific sessions, which populates the Summary - Session view. Use this view to better understand how end users interact with individual desktops and applications, and to how well your system responds to end-users’ requests. For example, high peaks in the latency data may indicate bottlenecks in desktop and application sessions and should be investigated. For more information about NetScaler agents, see Creating NetScaler Agent Instances .
Figure 101. Summary - Session view
 
Table 10. Summary - Session view
Session Basic Information
General information about the session, such as its name, state, catalog name, type (desktop or application), support type, and the delivery group to which it belongs.
Figure 102. Session Basic Information view
Session Performance Details
A monitoring dashboard that visualizes the main components in the selected session and their connectivity. This can help you understand the effect of these components may have on your system. Along with displaying the client, NetScaler gateway, and the application or desktop server, this intuitive view connects these elements with a series of graphical flows illustrating the transmission of the session data. For example, you can review the rates of data and flowing between the client, NetScaler gateway, and the application or desktop server, and identify any signs of potential network congestion that may affect your system.
Figure 103. Session Performance Details view
 
Client: This embedded view shows the name and IP address of the machine accessing your XenDesktop environment. It also displays the following information:
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User: The name of the XenDesktop user.
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Type, Version: The name and version number of the OS running on the client machine.
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Broker Runtime: The amount of time the connection broker process has been running during its most recent connection attempt.
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Broker Started: The amount of time that has passed since the broker process for the first time.
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Connection Runtime: The date and time when the connection broker process has connected during its most recent connection attempt.
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Connection Established: The date and time when the connection broker process has established the connection for the first time.
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Packet Retransmit: The number of times data packets are re-sent after being lost or damaged over the selected time range.
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Reconnects: The number of times the connection had to be re-established over the selected time range.
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WAN Latency: The WAN latency rates between the client and the NetScaler gateway, over the selected time range.
 
NetScaler: This embedded view shows the name and IP address of the NetScaler gateway machine. It also displays the following information:
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Platform: The name of the NetScaler appliance.
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Version, Build: The NetScaler version and build numbers.
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Primary IP: The IP address of the NetScaler appliance.
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Client Package Process Delay: The amount of time the client package is delayed, over the selected time range.
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Server Package Process Delay: The amount of time the server package is delayed, over the selected time range.
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ICA RTT (Round-Trip Time): The length of the ICA RTT over the selected time range.
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DC Latency: The data center (DC) latency rates between the NetScaler gateway and the application or desktop server, over the selected time range.
 
Server: This embedded view shows the name and IP address of the XenDesktop server machine hosting the application or desktop associated with the selected session. It also displays the following information:
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OS: The name and version of the OS running on the server.
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Host Type: The type of the host (Physical or Virtual) on which the XenDesktop server is running.
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Type: The session type (Application or Desktop).
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Protocol: The remote display protocol (for example, HDX).
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Host Server: The IP address of the host machine on which the server is running.
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Server Process Delay: The amount of time the server process is delayed, over the selected time range.
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Packet Retransmission: The number of times data packets are re-sent after being lost or damaged, over the selected time range.

Monitoring Users

XenDesktop® facilitates delivery of application components to end users on demand. Foglight™ for XenDesktop and XenApp allows you to monitor the over utilization of resources associated with XenDesktop users. The information appearing in the XenDesktop User Quick View can help you discover potential resource-level issues that can be caused by higher than usual CPU or memory usage, or increasing latency and session rates, and to reallocate resources where they are most needed.
Figure 104. XenDesktop Users Quick View
To explore Users:
1
On the navigation panel, under Dashboards, click XenDesktop Environment.
2
On the XenDesktop Environment dashboard, on the Monitoring tab, click the Users tile.
3
In the XenDesktop Users Quick View, in the Users view on the left, click All Users.
The XenDesktop Users Quick View refreshes, showing the Summary - All Users view on the right.
Figure 105. Summary - All Users view
This view identifies the applications with the highest number of instances, and the highest CPU and memory utilization, and session latency. For more information, see Identifying Top Consumers.
4
In the XenDesktop Users Quick View, in the Users view on the left, click a user node.
The XenDesktop Users Quick View refreshes, showing the Summary - User view on the right.
Figure 106. Summary - User view
This view displays a summary about XenDesktop objects associated with the selected user and shows the levels of CPU and memory utilization associated with desktops and applications. For more information, see Investigating the Levels of Resource Consumption.
5
If you want to view the relationship of the selected User object with other components in your integrated environment, in the top-right corner, click View Dependency.
The display area refreshes, showing a dependency map.
Figure 107. Dependency map
The map illustrates how the selected User object relates to other components in your monitored environment. For more information, see Viewing Object Dependencies.
 
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TIP: To return to the XenDesktop Environment dashboard, use the bread crumb trail in the top-left corner.
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