HP-UX 11i September 2005 Release Notes

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100

General System Administration

HP Partitioning

Chapter 5

HP Process Resource Manager

HP Process Resource Manager (PRM) version C.03.00 provides an efficient and flexible

way to manage resource allocation at times of peak system load. It gives the system

administrator the ability to group users or processes together and guarantee each group

minimum amounts of the total CPU, real memory, and disk bandwidth available.

Summary of Change

PRM has been updated to version C.03.00 with the following changes:

• Support for 256 PRM groups

• Integration with HP Systems Insight Manager

• To enhance security, the daemon used for remote management is now off by default

• SSL encryption is now enabled by default

• To make memory enhancement more robust:

—

PRM_SYS

is now able to import memory

—

OTHERS

must always be able to export (You cannot set

EXPORT

for

OTHERS

to 0.)

Impact

The changes to PRM version C.03.00 have the following impacts;

• More secure environment if desired

• More PRM groups

• Remote management must now be manually configured (prm3d must be started on

the remote systems; SSL encryption must be configured)

Compatibility

•The prm3d daemon is no longer started by default.

For security purposes, the prm3d daemon used for remote management is no longer

started by default at boot in the file /etc/rc.config.d/prm. You can manually set

the value of

PRM_RMTCONF

to 1 in the /etc/rc.config.d/prm file to allow automatic

starting of the daemon.

• SSL encryption of remote management using xprm is now enabled by default.

The property

prmrmi_ssl

in the file /var/opt/prm/prmrmi.properties is now set

true

by default. Each system you attempt to securely connect to must also have

this property set to

true

. Set this value to

false

to use xprm with PRM versions that

do not support the /var/opt/prm/prmrmi.properties file.

Performance

PRM is designed to set resource allocations (CPU, memory, disk bandwidth) for

applications. Misconfiguration can result in degradation.

1. See “HP Systems Insight Manager” on page 111.