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Reconfiguring Process Placements
Recommended Guidelines for Process Placement
The following are a few recommended guidelines for changes to the process placement configuration:
• Generally, the process placement feature functions well upon system startup; fine tuning is seldom
required.
• Use the EXEC mode command placement reoptimize , as described in the
Placements , on page 9
• Keep process placement policy changes to a minimum, and always consult technical support personnel
before implementation.
Process Placement Based on Memory Consumption
You can change process placements based on memory use of processes. Memory use is expressed in terms
of the memory "footprint of the placeable process. The system attempts to spread the load among the nodes
without exceeding their memory capacity. In addition, the system computes the affinity values to determine
the best placement.
Cisco IOS XR software assumes that every placeable process uses one megabyte of memory.
For detailed instructions, see
Changing Process Affinities
Process placement can also be controlled by changing the affinities, or preferences, of a process or process
group. The following types of process affinities are operator configurable:
• affinity location set
• affinity location type
• affinity program
• affinity self
affinity location set
This affinity specifies a preference for a process to run on a specific node pair or set of node pairs. A node
pair is either an active and standby pair of nodes [hosted on ], or a single active node on an that does not have
a standby.
affinity location type
This affinity specifies a preference for a process to run on a particular location type. Available location types
are as follows:
• paired— nodes that have an associated standby node
• primary—Primary node
System Management Configuration Guide for the Cisco NCS 6000 Series Router, Release 5.0.x
10
to automatically redistribute the processes among the available .
Setting Memory Consumption Thresholds, on page
Process Placement
Reoptimizing Process
12.
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