HP-UX Processor Sets

HP-UX Processor Sets 9
appropriate access permissions, users can dynamically reassign any processor (except
Processor 0) to another processor set, thereby removing the processor from its current set.
When all processors are removed from a processor set, the processor set becomes empty but
still exists. Processors can be reassigned any time later to use the processor set again.
However, an empty processor set cannot have any applications assigned to it.
Users can dynamically destroy a processor set when it is no longer needed. When a non-
empty processor set (one that still has processors assigned to it) is destroyed, all its
processors are reassigned to the Default Pset. Also, all applications bound to the non-empty
processor set being destroyed are moved to the Default Pset.
Figure 1: Example Processor Set Configuration
The
Figure 1: Example Processor Set Configuration shows an example Processor Set
configuration on a 16-way system. The system is configured into three processor sets: one 8-
processor processor set for all users, and two 4-processor processor sets for two different
instances of database servers. The processors are randomly assigned to processor sets in
this example.