Starting up and shutting down Workload Manager

WLM is an optional service that must be started and stopped.

The key difference between these options is permanence. In SMIT, you can start or stop WLM three ways:

current session

If you request to stop WLM with this option, WLM will be stopped for this session only and restarted at next reboot. If you request a start with this option, WLM will be started for this session only and not restarted at next reboot.

next reboot

If you request to stop WLM with this option, WLM will remain running for this session only and will not be restarted at next reboot. If you request a start with this option, WLM will not be available for this session, but will be started at next reboot.

both

If you request to stop WLM with this option, WLM will be stopped for this session only and will not be restarted at next reboot. If you request a start with this option, WLM will be started for this session only and will be restarted at next reboot.

You can also use the wlmcntrl command, but the wlmcntrl command allows you to start or stop WLM for the current session only. If you want to use the command line interface and you want the change to remain in effect when the machine is rebooted, you must edit the /etc/inittab file.

WLM can be used to regulate resource consumption as per-class percentages, per-class totals, or per-process totals. Regulation for all resource types can be enabled by running WLM in active mode. Optionally, you can start a mode of WLM that classifies new and existing processes and monitors the resource usage of the various classes, without attempting to regulate this usage. This mode is called the passive mode. If CPU time is the only resource that you are interested in regulating, you can choose to run WLM in active mode for CPU and passive mode for all other resources. This mode is called cpu only mode.

All processes existing in the system before WLM is started are classified according to the newly loaded assignment rules, and are monitored by WLM.