Secure Global Desktop Administration Guide > Arrays, servers and load balancing > Tuning properties (server-specific)

Tuning properties (server-specific)

Attributes on the Tuning Properties For... panel of Array Manager let you tune the Secure Global Desktop server. The attributes apply independently to each Secure Global Desktop server.

From the command line, use tarantella config to view and edit these settings.

Array ManagerCommand lineDescription
Processing Limits: Maximum simultaneous requests--tuning-maxrequests num
  • The maximum number of requests the server processes simultaneously.
  • As a rough guide, set this to the number of CPUs multiplied by 4.
  • Too high a setting may degrade performance.
  • Changes to this attribute take effect immediately.
Processing Limits: Maximum simultaneous webtop connections--tuning-maxconnections num
  • The maximum number of simultaneous webtop connections (connections between Secure Global Desktop clients and the Secure Global Desktop server).
  • Once the limit is reached, connections are refused.
  • Too high a setting may degrade performance.
  • Changes to this attribute take effect immediately.
File Descriptors--tuning-maxfiledescriptors num
  • The maximum number of open file descriptors to allow.
  • Increasing this increases the number of simultaneous connections that may be handled.
  • This value affects all Secure Global Desktop server components.
  • Too high a setting may degrade performance.
  • Changes to this attribute take effect when the server restarts.
Server JVM Size--tuning-jvm-initial MB

--tuning-jvm-scale percent

--tuning-jvm-max MB
  • Three attributes controlling the size and expansion rate of the memory allocated to the Secure Global Desktop server's virtual machine for the Java™ platform ('Java Virtual Machine' or 'JVM'):
    • The amount of memory, in MB, to allocate initially for the Secure Global Desktop server's JVM. Set this to no greater than the amount of RAM on the host.
    • A scaling factor (expressed as a percentage), used to increase the amount of JVM memory dynamically when needed.
    • An absolute maximum size in MB, which is never exceeded.
  • Too high settings may degrade performance.
  • Changes to this attribute take effect when the server or JVM restarts.
Resource Synchronization--tuning-resourcesync-time time
  • At what time to start resource synchronization each day, if enabled for the array.
  • Use the server's local time zone.
  • Express the time in 24-hour clock format, for example "16:00 for 4pm.
  • Changes to this attribute take effect immediately.
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