Installing and Managing HP-UX Virtual Partitions (includes A.04.02)

CPU, Memory, and IO Resources (A.04.xx)
CPU: Adding and Deleting by Total
Chapter 6
182
CPU: Adding and Deleting by Total
The basic syntax for adding and deleting CPUs is
-a|d|m cpu::
num
where
a|d|m specifies adding, deleting, or modifying the
total count of CPUs
num specifies the number of CPUs
NOTE The virtual partition can be either up or down when using the cpu::num syntax.
CPUs that are added using the cpu::num syntax can be deleted only by using either the
• cpu::
num syntax or
• cpu:
hw_path syntax (deletion by hardware path)
Total increase or decreases by num when using the -a or -d options and is set to num when
using the -m option.
vparcreate
With the vparcreate command, you would use the -a option and specify as num the number of CPUs to
allocate to the virtual partition.
If no cpu syntax is given on the vparcreate command line, the default value for total is 1.
Example
• To create the virtual partition keira2 with 3 CPUs, set
num to 3:
keira1# vparcreate -p keira2 -a cpu::3 ...
vparmodify
With the vparmodify command, you can either use the
• -a option to add
num CPUs to the virtual partition
• -d option to delete
num CPUs from the virtual partition
• -m option to modify (set) to
num the number of CPUs assigned to the partition . The vPars Monitor
automatically will add or delete CPUs to or from the virtual partition to reach
num CPUs
Examples
• If an existing partition has 2 CPUs and you would like to set the number of CPUs to 3, you can modify the
number of CPUs assigned to the partition by using the -m option and setting
num to 3:
keira1# vparmodify -p keira2 -m cpu::3
To set the number of CPUs back to two, use the -m option and set
num to 2
keira1# vparmodify -p keira2 -m cpu::2
• If you would like to add 1 CPU to an existing partition, regardless of its current CPU count, you can add 1
CPU by using the -a option and setting
num to 1