HP-UX Workload Manager User's Guide

Configuring WLM
Defining the PRM components (optional)
Chapter 5160
NOTE Use PRM_SYS only as needed. Do not load processes in
PRM_SYS indiscriminately.
The OTHERS group is the default group for users who
are not assigned to groups. It is also the default group
for applications that are not assigned to groups or are
started by users who do not have assigned groups. You
can specify OTHERS as an FSS group (group_ID must be
1), but not as a PSET group. It does not require an slo
structure, but you can create one or more for it if you
wish.
If you specify gminmem, gmaxmem, or memweight for any
group in your configuration, be sure to specify a
gminmem for any group, including OTHERS, for which 1%
of the memory is not sufficient for its users and
applications (or if the tunable extended_shares is
enabled, for which 0.2% of the memory is not
sufficient).
After WLM allocates CPU resources to groups with
SLOs, OTHERS by default receives any remaining CPU
resources. You can change this default with the
distribute_excess tunable, explained in
“Distributing excess CPU resources to your workloads
(optional)” on page 218.
For any other FSS group you define, define an slo
structure that references that group.
group_ID Is the workload group ID. These IDs must be uniquely
assigned integer values from 0 to 63 (inclusive) or 0 to
255 (inclusive) starting with HP-UX 11i v2 Update 2,
as explained in “Refining granularity of CPU (and
memory) allocation by increasing shares per core
(optional)” on page 219. ID 0 is reserved for the
PRM_SYS group. ID 1 is for the user default group
OTHERS. If the PRM_SYS and OTHERS groups are not
specified, they are created automatically.
A PSET_group_def has the syntax:
group : PSET [: LCPU = {ON | OFF} ]