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14 Deploying ZENworks on a Citrix Server Best Practices Guide
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1.6.3 High Consumption of Memory on a Citrix Server
On a Citrix server or a terminal server, if a user disconnects a session without logging out from it,
the session exists in the disconnected state. This might cause high memory consumption of the agent
service.
To avoid high consumption of memory on the Citrix server, do one of the following:
Š
Ensure that the users log out from a session instead of just disconnecting the session.
Š Set a time limit to automatically log out from a disconnected session. For detailed information,
see the
Microsoft Knowledgebase (http://support.microsoft.com/kb/186566) .
1.6.4 Disabling Random Refresh Might Cause the ZENWorks
Adaptive Agent to Crash on a Citrix Server
If Random Refresh for the ZENWorks Adaptive Agent is disabled and if multiple users log in to the
Citrix server at the same time, then all the sessions try to refresh at the same time. This can cause
resource contention, and subsequently causes the agent to crash because the cache access is not
synchronized. To avoid this, Random Refresh must be enabled for the ZENWorks Adaptive Agent.
1.6.5 Logging in to the User Source on a ZENworks Server is
Slow
Logging in to the user source on a ZENworks Server from the managed device might take some time
because the login process executes the device refresh synchronously.
To speed up the login process, perform the following steps to execute the device refresh
asynchronously:
1 Open the Registry Editor.
2 Go to HKEY_LOCAL_MACHINE\Software\Novell\ZENworks.
3 Create a string called ZENLoginUserRefreshAsync and set its value to TRUE.
4
Log in to the device again.
IMPORTANT: If you change the login process to execute the device refresh asynchronously, the
latest policies might not be immediately available. With this change, you make the login
performance more important than the accuracy of the policies.