NOTE

Example 4-5

Using Instant Capacity to Manage Processing Capacity

Overriding Deferred Processor Activations and Deactivations

Overriding Deferred Processor Activations and Deactivations

Only activation of processors is discussed in this section, but the discussion applies equally to the deactivation of processors.

If you have performed a deferred processor activation, using the -Doption in the icod_modify command, and the intended number of active processors specified is no longer desirable, you can override the (pending) deferred activation by performing another deferred or instant icod_modify operation. This second operation overrides the first activation.

You may experience one of the following deferred activation scenarios:

•The deferred number of active processors was incorrect and you want it to be correct when the system reboots

•The entire deferred operation was accidental and you want to undo it The following two examples explain how to override these situations.

Correcting an Incorrect Number of Deferred Active Processors

1.On your system or partition you currently have 2 processors activated and 2 processors inactive. You decide 4 active processors are needed, so you perform a deferred activation for 2 additional active processors by entering the following command:

/usr/sbin/icod_modify -D -a 2

2.Later, and prior to a system reboot, you realize that you need only 3 active processors (not 4). You can override the initial deferred activation in Step 1 by entering the following command:

/usr/sbin/icod_modify -D -s 3

The -soption in Step 2 (above) sets the number of active processors. The activation takes place after the next system reboot due to the -Doption. You could also perform Step 2 without the -Doption for the icod_modify operation to be instant.

Chapter 4

61