Workload Manager properties

You can specify the properties for the WLM configuration by using the SMIT, the WLM command line interface, or by creating flat ASCII files. The SMIT interfaces use the WLM commands to record the information in the same flat ASCII files, called property files.

A set of WLM property files defines a WLM configuration. You can create multiple sets of property files, defining different configurations of workload management. These configurations are located in subdirectories of /etc/wlm. The WLM property files describing the super classes of the Config configuration are the file's classes, description, limits, shares and rules in /etc/wlm/Config. Then, the property file's describing the subclasses of the superclass Super of this configuration are the file's classes, limits, shares and rules in directory /etc/wlm/Config/Super. Only the root user can start or stop WLM, or switch from one configuration to another.

The property files are named as follows:

Item Description
classes Class definitions
description Configuration description text
groupings Attribute value groupings
limits Class limits
shares Class target shares
rules Class assignment rules

The command to submit the WLM property files, wlmcntrl, and the other WLM commands allow users to specify an alternate directory name for the WLM properties files. This allows you to change the WLM properties without altering the default WLM property files.

A symbolic link, /etc/wlm/current, points to the directory containing the current configuration files. Update this link with the wlmcntrl command when you start WLM with a specified configuration or configuration set. The sample configuration files shipped with the operating system are in /etc/wlm/standard.