200
• 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
af
finity."
• affinity 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 Hewlett Packard Enterprise engineers to
avoid service interruption.
Process placement configuration task list
Tasks at a glance
Configuring process placement policy:
• (Optional.) Configuring a location affinity
• (Optiona
l.) Configuring a location type affinity
• (Optional.) Configuring a process affinity
• (Optional.) Configuring a self affinity
(Required.) Optimizing process placement
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