Installing and Managing HP-UX Virtual Partitions (includes A.04.01)
CPU, Memory, and IO Resources
CPU: A.04 Syntax, Rules, and Notes (vPars A.04)
Chapter 6
183
vPars CPU Rules
(vPars A.04)
Table 6-2 CPU Rules for A.03 -> A.04
vPars A.03 Rules => vPars A.04 Rules
dynamic migration
• only unbound CPUs can be migrated
while a virtual partition is up
dynamic migration
• all CPUs except the boot processor can be
migrated while a virtual partition is up
count rules
• number of cpu_assigned by hw_path
<= min
• min<= total<= max
count rules
• min <= total
•total =
(number of CPUs assigned by hw_path) +
(number of CPUs assigned by cell) +
(number of CPUs assigned by vPars Monitor)
NOTE: when the virtual partition is booted, one
of the CPUs from the operand list above becomes
the boot processor.
NOTE: from a user’s point of view, the same CPU
could be considered under more than one
category. However, the vPars Monitor will
categorize and count a CPU only once. Use
vparstatus -v to see the CPU details
• total <= max
• when a virtual partition is down, the number of
CPUs assigned by hardware path must be less
than or equal to the pre-existing total
adding or decreasing the total count of
CPUs assigned to a virtual partition is
performed by only
• modifying total directly (cpu::total)
adding or decreasing the total count of CPUs is
performed by any of the following:
• modifying total directly (cpu::total)
• adding or decreasing by hw_path (cpu:hw_path)
— if the virtual partition is up, total will be
adjusted automatically (unless the CPUs are
already assigned to the partition)
— if the virtual partition is down, the number of
CPUs assigned by hardware path must be
less than or equal to the pre-existing total
if this is the case, you should first modify
total to allow the additional cpu.
• adding or decreasing by CLP
— total will be adjusted automatically