HP-UX Workload Manager Toolkits User's Guide

HP-UX WLM Duration Management Toolkit and HP-UX WLM Toolkit for Base SAS Software
How do I use DMTK / SASTK?
Chapter 6 129
WLM allows you to create an express lane for quicker completion of your
most critical jobs. These jobs may run on a regular schedule or on an
as-needed basis. Nevertheless, through the use of a specially defined
WLM workload group for these jobs, you can be sure the jobs execute
quickly.
Setting up an express lane
Consider the following scenario:
Friday morning, the CEO learns that she must give a presentation to
market analysts at 2 pm; she needs to present a current financial report.
Unfortunately, it is also the end of the month, so accounting must have a
completed inventory at the start of the next business day. Furthermore,
the development team has just updated a report and must run its
scheduled regression test. These types of jobs are all priority-based:
• The CEO’s job is an unscheduled, high-priority task
• The accounting program is a time-critical application
• The development team’s job is scheduled and discretionary
These processes all have specific priorities and must all be
asynchronously allocated resources based on the business needs of the
company.
With WLM, you can insert a job into a normal day’s workload and give it
priority access to resources to ensure it completes as quickly as possible.
This can be done without stopping normal work, although it does slow
down the normal work.
The administrator can create an express lane for unscheduled,
high-priority jobs. An express lane is a normal WLM workload group. It
differs from other groups in that it does not have automatic job
assignments through the WLM configuration file. It is assigned jobs
manually using the prmrun command.
Be sure to configure the express lane workload group with enough CPU
resources that the job has the needed resources to complete quickly.
The following procedure gives the general steps in creating an express
lane. For examples of WLM configurations with express lanes, see the
sections following the procedure.