Installing and Managing HP-UX Virtual Partitions (includes A.03.03)

CPU, Memory, and IO Resources
CPU: A.04 Syntax, Rules, and Notes (vPars A.04)
Chapter 6
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CPU: A.04 Syntax, Rules, and Notes
(vPars A.04)
vparstatus
• When a virtual partition is down, vparstatus does not show any processor assigned as the boot processor.
The boot processor is not assigned until the virtual partition is actually booted.
• If a virtual partition is down and assigned only one CPU, a CPU will be reserved by the vPars Monitor,
making it unavailable. The specific CPU reserved is not determined until boot time. As a result, while the
virtual partition is down, vparstatus -A, which shows available resources, will show all the possible paths
of unassigned CPUs but the count of available CPUs will be one less. The count reflects the actual
number of available CPUs because one CPU is reserved for the down virtual partition.
Counts Summary
• At all times, the rule of min<=total<=max is enforced.
• When adding by CLP, the total count changes whether the partition is up or down.
• When adding by hardware path, the total count changes only when the partition is up (unless the
specified CPU is already assigned to the partition).
• When adding by hardware path and the partition is down, you cannot have the number of CPUs added by
hardware path exceed the current total value.
Deleting CPUs Summary
• You can delete any CPU, except the current boot processor, by specifying its hardware path. Otherwise, a
CPU can only be deleted using the same syntax that was used to add it to the virtual partition.
• The current boot processor can not be deleted from a virtual partition. (Use vparstatus -v to determine the
current boot processor). You will need to shutdown the virtual partition and delete the desired CPU.