HP-UX Workload Manager User's Guide

Managing SLOs across partitions
Setting up your WLM global arbiter configuration file
Chapter 7266
The global arbiter configuration file allows you to control settings for the
HP-UX WLM global arbiter, which governs cross-partition management
and management of Temporary Instant Capacity (TiCAP) and Pay per
use (PPU) resources.
WLM can manage cores for virtual partitions and nPartitions. (The
partitions can even be nested and contain FSS and PSET-based workload
groups.) WLM virtual partition management migrates cores between
virtual partitions. With nPartitions being physical entities, WLM
nPartition management—through the use of Instant Capacity
software—only gives the appearance of migrating cores. This
pseudo-migration is achieved by deactivating cores on one nPartition and
then activating cores on another nPartition.
NOTE The configuration file is required.
The file’s syntax is free-form, allowing white space to be used freely in
formatting the file. Comment lines are preceded with the hash mark (#).
Use wlmpard to activate a global arbiter configuration file.
The WLM global arbiter configuration file consists of a par structure
that allows you to specify:
• How frequently the WLM global arbiter checks for input from the
individual WLM instances running in the partitions
• The port that the WLM global arbiter should monitor for input from
the individual WLM instances
• The size, in megabytes, at which the wlmpardstats file is
automatically truncated
• The lowest priority SLO at which WLM should use Temporary
Instant Capacity (TiCAP) or Pay per use (PPU) resources to manage
the total core capacity available
If you specify a port number in the primary_host statement of any of the
WLM configuration files or in the WLM global arbiter configuration file,
you must specify the same port number in all the files.
You can use the WLM GUI to set up the global arbiter configuration file,
as described in “Using the WLM GUI to set up the global arbiter
configuration file” on page 267. Otherwise, you can use a text editor to