HP Instant Capacity User's Guide for versions B.07.x

Using Instant Capacity to Manage Processing Capacity
Deactivating Processors
Chapter 460
Deactivation Example Session for
Hardware-partitionable Systems
The following example shows you how to deactivate an active processor.
At the beginning of this deactivation session, there are a total of 4
processors in the partition; 3 processors are active and 1 is inactive. In
this example, 1 active processor is deactivated, leaving the partition with
2 active processors and 2 inactive processors. As with activation, you do
not specify a particular processor to be deactivated. You specify only a
number of processors to be deactivated.
Example 4-4 Deactivating an Active Processor
/usr/sbin/icod_modify -d 1
2 processors are now active, and 2 processors are specified to
be active after the next reboot.
NOTE In the above deactivation example, the processor deactivation is instant
(that is, does 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.
For example, the icod_modify -d 1 command/option deactivates 1
additional processor in a partition. The icod_modify -s 2
command/option sets the total number of active processors in a partition
to 2.