Zenworks Configuration Management Tuning Parameters; User Sessions On A Citrix Server Fail To Terminate; High Utilization Of Resources On A Citrix Server; Section 1.6, "Zenworks Configuration Management Tuning Parameters - Novell PRODUCT NAME 10.3 - DEPLOYING ZENWORKS ON CITRIX SERVER BEST PRACTICES GUIDE 12-13-2010 Manual

1.6 ZENworks Configuration Management
Tuning Parameters
This section provides information about the scenarios you might encounter if the parameters
configured for a Citrix server are not appropriately tuned as per the deployment environment:
Section 1.6.1, "User Sessions on a Citrix Server Fail to Terminate," on page 13
Section 1.6.2, "High Utilization of Resources on a Citrix Server," on page 13
Section 1.6.3, "High Consumption of Memory on a Citrix Server," on page 14
Section 1.6.4, "Disabling Random Refresh Might Cause the ZENWorks Adaptive Agent to
Crash on a Citrix Server," on page 14
Section 1.6.5, "Logging in to the User Source on a ZENworks Server is Slow," on page 14

1.6.1 User Sessions on a Citrix Server Fail to Terminate

Terminating a thin client application that is running on a Citrix server might not close the user
session on the server. Consequently, when the user logs out of the server, the roaming profile data
for the user session is not saved.
To close the user session on the Citrix server, perform the following steps on the server:
1 Open the Registry Editor.
2 Go to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI
3 Change the value of LogoffCheckSysModules from
ZenUserDaemon.exe
4 Reboot the device.
NOTE: This issue has been fixed in Update for ZENworks 10 Configuration Management SP3
(10.3.1) release.

1.6.2 High Utilization of Resources on a Citrix Server

During a partial or general refresh of the ZENworks Adaptive Agent on a terminal session of a
Citrix server, the agent simultaneously refreshes the sessions of all the users logged into the terminal
server. If too many users have logged into the terminal server, this might cause high usage of system
resources, and subsequently the ZENworks Adaptive Agent might take considerable time to refresh
the terminal server.
To avoid high utilization of resources on the Citrix server:
1 Open the Registry Editor.
2 Go to
HKLM\Software\Novell\ZCM\
3 Create a string called EnableBatchRefresh and set its value to 1. By default, the number of user
sessions that can be simultaneously refreshed is 5.
4 (Optional) If you want to change the default number of user sessions that must be
simultaneously refreshed, create a string called maxUserRefreshThreads and set the desired
value.
.
.
Best Practices for Deploying ZENworks on a Citrix Server
to
ZCMUMHelper.exe
.
13