Citrix Virtual Apps and Desktops

Load management policy settings

September 23, 2021

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The Load Management section contains policy settings for enabling and configuring load management between servers delivering Windows Multi-session OS machines.

For information about calculating the load evaluator index, see CTX202150.

Concurrent logon tolerance

This setting specifies the maximum number of concurrent logons a server can accept.

By default, this is set to 2.

When this setting is enabled, load balancing tries to avoid having more than the specified number of logons active on a Server VDA at the same time. However, the limit is not strictly enforced. To enforce the limit (and cause concurrent logons that exceed the specified number to fail), create the following registry key:

HKLM\Software\Citrix\DesktopServer\LogonToleranceIsHardLimit Type: DWORD Value: 1

CPU usage

This setting specifies the level of CPU usage, as a percentage, at which the server reports a full load. When enabled, the default value at which the server reports a full load is 90%.

By default, this setting is disabled and CPU usage is excluded from load calculations.

CPU usage excluded process priority

Note:

In scenarios where machines are managed by Workspace Environment Management, using this setting along with the CPU Priority settings can have unintended results. We recommend that you disable this setting if you choose to use the CPU Priority settings.

This setting specifies the priority level at which a process’ CPU usage is excluded from the CPU Usage load index.

By default, this is set to Below Normal or Low.

Disk usage

This setting specifies the disk queue length at which the server reports a 75% full load. When enabled, the default value for disk queue length is 8.

By default, this setting is disabled and disk usage is excluded from load calculations.

Maximum number of sessions

This setting specifies the maximum number of sessions a server can host. When enabled, the default setting for maximum number of sessions a server can host is 250.

By default, this setting is enabled.

Memory usage

This setting specifies the level of memory usage, as a percentage, at which the server reports a full load. When enabled, the default value at which the server reports a full load is 90%.

By default, this setting is disabled and memory usage is excluded from load calculations.

Memory usage base load

This setting specifies an approximation of the base operating system’s memory usage and defines, in MB, the memory usage below which a server is considered to have zero load.

By default, this is set to 768 MB.

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Load management policy settings

September 23, 2021

Contributed by:

September 23, 2021

Contributed by:

Load management policy settings

Concurrent logon tolerance

CPU usage

CPU usage excluded process priority

Disk usage

Maximum number of sessions

Memory usage

Memory usage base load

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