Instant Capacity on Demand (iCOD) User's Guide for versions B.05.x

Using iCOD to Manage your Processors
Decreasing Processor Capacity
Chapter 460
Decreasing Processor Capacity
You have the ability to decrease processor capacity instantly on HP
enterprise servers with the iCOD software. At any time, any number of
active processors can be deactivated. Processor deactivation can be
useful for load balancing processors in hardware-partitionable iCOD
systems.
Benefit of Deferred
Deactivation
A benefit of using the icod_modify command’s deferred option (-D), for
processor deactivation, is that the deactivation does not take place until
a reboot of the system occurs. The scheduled timing of the reboot (and
the processor deactivation) can take place at a planned time.
To deactivate one or more active processors, use the icod_modify
command as root. The following example shows you how to deactivate
processors. Refer to the manpage icod_modify(1M) for details.
Deactivation Example Session for
Hardware-partitionable Systems
In the following session, there are a total of 4 processors in the
Superdome local partition; 3 processors are activated and 1 is an inactive
processor. In this example, 1 active processor is deactivated, leaving the
partition with 2 active processors and 2 inactive processors.
icod_modify -d 1 “load balance:mjones:Bill Price:[e-mail]:[phone]“
2 processors are now active.
NOTE In the above deactivation example, the processor deactivation is instant
(that is, not require a reboot). To defer the deactivation (until the next
reboot) add the -D option to the command. See the manpage
icod_modify(1M) for details.
The icod_modify command allows you to deactivate processors with the
-d option, or set the total number of active processors with the -s option.