HP 5900 series - Configuration Restrictions and Guidelines; Process Placement Configuration Task List

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• The active process runs on the main CPU of the master, and the standby processes run on other
CPUs.
• A process runs at the location where it ran the last time and does not move to any other location
during startup or operation.
• The addition of a new node does not impact current active processes. A new active process selects
one node with sufficient CPU and memory resources. (You can use the display cpu-usage and
display memory commands to view CPU and memory usage information.)
Optimizing process placement
You can configure the following settings for a process placement policy to optimize process placement:
• affinity location-set—Location affinity, the preference for the process to run on a specific node.
• affinity location-type—Location type affinity, the preference for the process to run on a particular
type of node. For more information about node types, see "Configuring a location type affinity."
• af
finity program—Process affinity, the preference for the process to run on the same node as a
particular process.
• affinity self—Self affinity, the preference for one instance of the process to run on the same node as
any other instance of the process.
Affinities include positive affinities (attract) and negative affinities (repulse), all represented by integers
in the range of 1 to 100000.
• The higher the attract value, the stronger the preference.
• The higher the repulse value, the weaker the preference.
After you apply new placement policies, the system makes placement decisions based on the new
policies, node resources, and topology status. If the new location for an active process is different from
the current node, the system changes the state of the process to standby, and uses the standby process on
the preferred location as the new active process.
Configuration restrictions and guidelines
The system determines the location for each active process, and there is no need to optimize process
placement. If optimization is needed, work with HP engineers to avoid service interruption.
Process placement configuration task list
Tasks at a
g
lance
Configuring process placement policy:
• (Optional.) Configuring a location affinity
• (Optional.) Configuring a location type affinity
• (Optional.) Configuring a process affinity
• (Optional.) Configuring a self affinity
(Required.) Optimizing process placement