Using HP-UX Workload Manager: A quick reference

In addition, you can use the wlminfo command, which shows CPU Shares and utilization (CPU

Util) for each workload group, and beginning with WLM A.03.02, the command also shows

memory utilization (because memory records are not being managed for any of the groups in this

example, a “-“ is displayed in the Mem Shares and Mem Util columns):

# /opt/wlm/bin/wlminfo group

Thu Aug 29 08:36:38 2006

Workload Group PRMID CPU Shares CPU Util Mem Shares Mem Util State

OTHERS 1 65.00 0.00 - - ON

g2 2 15.00 0.00 - - ON

g3 3 20.00 0.00 - - ON

5. Start the scripts referenced in the configuration file, as explained in the following:

a. WLM checks the files /etc/shells and /opt/prm/shells to ensure one of them lists each shell

or interpreter, including perl, used in a script. If the shell or interpreter is not in either of those

files, WLM ignores its application record (the workload group assignment in an apps

statement).

Add the following line to the file /opt/prm/shells so that the application manager can

correctly assign the perl programs to workload groups:

/opt/perl/bin/perl

b. Start the two scripts loop2.pl and loop3.pl. The following scripts produce output, so you

might want to start them in a new window.

# /opt/wlm/examples/userguide/loop2.pl &

# /opt/wlm/examples/userguide/loop3.pl &

These scripts start in the PRM_SYS group because you started them as the root user.

However, the application manager soon moves them (within 30 seconds) to their assigned

groups, g2 and g3. After waiting 30 seconds, run the following ps command to see that the

processes have been moved to their assigned workload groups:

# ps -efP | grep loop

The output will include the following items (column headings are included for convenience):

PRMID PID TTY TIME COMMAND

g3 6463 ttyp1 1:42 loop3.pl

g2 6462 ttyp1 1:21 loop2.pl

6. Manage workload group assignments:

a. Start a process in the group g2:

# /opt/prm/bin/prmrun -g g2 \

/opt/wlm/examples/userguide/loop.pl

b. Verify that loop.pl is in g2 with ps:

# ps -efP | grep loop

The output will confirm the group assignment:

g2 6793 ttyp1 0:02 loop.pl