HP-UX Workload Manager User's Guide

Configuring WLM
Defining the PRM components (optional)
Chapter 5 183
Specifying a group’s minimum memory (optional)
You can assign workload groups a minimum percentage of the system’s
memory. This minimum is a hard lower limit; the workload group
receives less than this minimum only if it has no active SLOs, is not
associated with a process map, and transient_groups is set to 1.
NOTE When specifying a workload group’s minimum memory, be very careful of
resource interactions, which are explained in “How resource allocations
interact” on page 453. In particular, be sure the workload groups get the
memory they need. (When setting values for gminmem, gmaxmem, and
gmemweight, ensure that the groups get sufficient memory even when all
groups are active.)
To specify the minimum percentage a group receives, use the gminmem
keyword in the prm structure, according to the following syntax:
gminmem = group : min [, ...];
where
group Is the workload group name.
If you specify gminmem, gmaxmem, or memweight for any
group in your configuration, be sure to specify a
gminmem for any group, including OTHERS, for which 1%
of the memory is not sufficient for its users and
applications (if the tunable extended_shares is set to
1, specify a gminmem for which 0.2% of the memory is
not sufficient).
You cannot specify the PRM_SYS group in a gminmem
statement.
min Is group’s minimum percentage of memory. The value
must be an integer between 1 and the group’s gmaxmem
value, inclusive.
The default min value is 1.