NET/MASTER Management Services (MS) System Management Guide

Balancing Process Pairs Among CPUs
Configuring the Processing Environment
115414 NonStop NET/MASTER MS System Management Guide 11–55
Specific tasks that you can perform using the PROCESS ALTER (with the
BACKUPCPU operand) and PROCESS SWITCH commands include:
Switching the role of the primary and backup processes
Moving the backup process to another CPU
Moving the primary process to another CPU
Moving both the primary and backup processes to other CPUs
Changing from a process pair to a single process without changing the primary
CPU
Changing from a process pair to a single process and changing the primary CPU
Changing from a single process to a process pair without changing the primary
CPU
Changing from a single process to a process pair and changing the primary CPU
Note The following examples use the NCP to illustrate tasks you can perform using these commands.
Switching the Role of the
Primary and Backup
Processes
Assume that the NCP is running in CPUs 0 (primary) and 1 (backup), and that you
want the NCP to run in CPUs 1 (primary) and 0 (backup). Use the following
command to switch the roles of the primary and backup processes:
PROCESS SWITCH=$ZNNM
When the command finishes, the NCP is running in CPUs 1 (primary) and 0 (backup).
Moving the Backup
Process to Another CPU
Assume that the NCP is running in CPUs 0 (primary) and 1 (backup), and that you
want the NCP to run in CPUs 0 (primary) and 3 (backup). Use the following
command to update the backup process CPU value and to implement the change:
PROCESS ALTER=$ZNNM BACKUPCPU=3 DEFER=NO
When the command finishes, the NCP is running in CPUs 0 (primary) and 3 (backup).
Moving the Primary
Process to Another CPU
Assume that the NCP is running in CPUs 0 (primary) and 1 (backup), and that you
want to the NCP to run in CPUs 2 (primary) and 1 (backup). To do so, follow these
steps:
1. Enter the following command to switch the roles of the primary and backup
processes:
PROCESS SWITCH=$ZNNM
When the command finishes, the NCP is running in CPUs 1 (primary) and 0
(backup).