[Alarm.<ClusterName>.<ServerName>]CPU
- Last UpdatedSep 17, 2024
- 2 minute read
This parameter is by Plant SCADA Runtime Manager to determine which CPU(s) the alarm server process is assigned to. The CPU parameter is configurable for every Plant SCADA process via the CPU Setup page in the Computer Setup Wizard (see CPU Configuration).
CPU numbers are specified in a comma separated list. CPU numbers need to be valid and a subset of the available CPUs on a computer. For example, if there are eight CPUs on a computer, a valid CPU range is 0 to 7.
If this parameter is modified while the Plant SCADA Runtime Manager is running, the changes will not take effect until every instance of Plant SCADA is restarted.
Note: This parameter needs to be applied to a specific alarm server process. For more information, see Configure Alarm Parameters for a Specific Cluster or Process.
Allowable Values:
A comma separated list in the range 0 to 31 (inclusive) where 0 is the first CPU (for example, "0, 1, 2" or "3, 4, 5").
If no value is entered, the process will run on all available CPUs.
Note: When a process is set to run on all available CPUs, be aware that performance issues may still occur when your CPU usage is less than 100%. You can detect these issues when your CPU usage for a process is fixed at 100 divided by the number of processors.
Default Value:
No value (the process will run on all CPUs).
Note: You cannot manually specify CPU assignments on a computer with more than 32 CPUs. Under these circumstances, the Setup Wizard will automatically set this parameter to no value (all CPUs). Any changes you make to this parameter will be overwritten.
See Also
[IOServer.<ClusterName>.<ServerName>]CPU