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:bprice@corp.com:(970)111-2222“ 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.