topic Re: PRM in Operating System - HP-UX

PRM

gany59 — Tue, 30 Mar 2010 12:11:35 GMT

Hi Techiees,

what is PRM.. and how can we able to use that.

Pls share the pdf also

Re: PRM

Patrick Wallek — Tue, 30 Mar 2010 12:13:00 GMT

PRM=Process Resource Manager

Have a look at: http://www.hp.com/go/prm

Re: PRM

SoorajCleris — Tue, 30 Mar 2010 12:46:03 GMT

Process Resource Manager (PRM)

While processor sets work by assigning different CPUs to different jobs, this control model does not fit all situations. The
other resource partition tool within the partitioning continuum allows different percentages of CPU, Memory, and LVM IO
bandwidth to be assigned to different groups of processes.

Re: PRM

SoorajCleris — Tue, 30 Mar 2010 12:47:10 GMT

Features of PRM: PRM provides a number of features and benefits, as indicated below:
â ¢ Management of the most critical shared server resources: CPU, real memory, and disk I/O bandwidth without hardware
duplication
â ¢ Support for resource allocation policies for both online and batch applications executing within either an nPartition or a
vPar or a single server node
â ¢ Fine grain CPU allocation. That is, CPUs can be allocated on a percentage or share basis
5.41 1-7
Introduction to Virtual Partitioning
â ¢ Application independence, that is because resource allocation is transparent to the application, applications require no
modification to execute on a server whose resources are allocated by PRM
â ¢ Dynamic PRM (re)configuration,where the configuration of PRM groups does not require a system reboot
â ¢ Automated policy changes, that is applications do not need to be restarted when resource allocation policies are changed
â ¢ Hierarchical resource allocation, where the resources of a PRM group are divided among its subgroups
â ¢ Integration with psets, that is instead of having only percentages or shares of CPUs, a resource group can have dedicated
processors in addition to dedicated memory being allocated by associating it with a pset
â ¢ Integration with UNIX accounting
â ¢ Integration with HP Glanceplus Pak

Re: PRM

SoorajCleris — Tue, 30 Mar 2010 12:48:02 GMT

Why use PRM?

PRM is ideal for consolidating applications that co-exist well within a single HP-UX image yet require
guaranteed resources, for example, multiple SAP R/3 instances. In addition, PRM can also be used to cap resource
consumption, thus preventing runaway processes. The scenario variation within a single partition (for example, online during
the day, backup and batch windows at night) often requires changes in resource allocation in order to adhere to defined SLOs
(for example, between 7 am and 7 pm, backup applications are eligible for 0% CPU utilization; however, between 7 pm and 7
am the following day, backup processes are eligible for 60% CPU utilization).
The dynamic configuration features of PRM enable the system administrator to create multiple configurations representing
resource and time-based policies.
Moreover, PRM is easy to use because PRM groups are configured through a Javaâ ¢-based graphical user interface, which
executes either as a stand-alone Javaâ ¢ application or within a browser. System administration is simplified because multiple
servers can be configured with a single GUI session.