HP Process Resource Manager User's Guide

Configuring and enabling PRM on the command line
Configuring PRM
Chapter 7116
Shared memory A shared memory record is a request that PRM try to
keep a minimum number of megabytes of physical memory available for
use as shared memory for the specified PRM group. (As pages in the
shared memory segment are paged out, PRM will attempt to maintain
the requested amount of physical memory for the PRM group. To
maintain the current PRM group’s physical memory, memory in other
PRM groups may be paged out more aggressively. PRM does not provide
any method for limiting the shared memory available to a PRM group.)
PRM groups without a shared memory record default to PRM_SYS for
shared memory allocation.
NOTE Note that each shared memory record must be preceded by the #!
characters. These lines are not treated as comments.
The shared memory control feature is supported on HP-UX 11i v2
Update 2 and later.
Use the following syntax to specify a shared memory record:
#!SHARED_MEM:{PRMID|GROUP}:MEGABYTES
where
#!SHARED_MEM Indicates the start of a shared memory record.
PRMID | GROUP Is a PRM group ID or group name for a group that
already has a private memory record. This group ID or
group name cannot correspond to a parent group in a
PRM group hierarchy.
You can selectively specify shared memory records: Not
every PRM group must have one.
MEGABYTES Is the size of the desired shared memory allocation for
the PRM group in megabytes. This value serves as a
request for a minimum allocation.
The size should reflect the needs of the application in
the PRM group. Shared memory management is
optimized for one shared memory segment, such as one
Oracle SGA, per PRM group.