HP Systems Insight Manager 7.2 Technical Reference Guide
Reasons to use PRM
• Improve the response time for critical users and applications.
• Set and manage user expectations for performance.
• Allocate shared servers based on budgeting.
• Ensure that an application package in a Serviceguard cluster has sufficient resources on an
active standby system in the event of a failover.
• Ensure that critical users or applications have sufficient CPU, memory, and disk bandwidth
resources.
Users who at times run critical applications might at other times engage in relatively trivial
tasks. These trivial tasks can compete in the users' PRM group with critical applications for
available CPU and real memory. For this reason, it is often useful to separate applications
into different PRM groups or create alternate groups for a user. You can assign a critical
application its own PRM group to ensure that the application gets the needed share of
resources.
• Restrict the CPU, real memory, and disk bandwidth resources available to relatively low-priority
users and applications during times of heavy demand.
For example, mail readers can consume significant disk bandwidth when users first come into
work or return from lunch. Therefore, you might want to assign a mail application to a PRM
group with small resource allocations and restrict the amount of resources mail can use during
such times of heavy demand on the system.
• Monitor resource consumption by users or applications.
Assigning a group of users or applications to separate PRM groups can be a good way to
track the resources they are using.
Accessing Process Resource Manager from HP SIM
To access PRM:
1. From HP SIM, select Optimize→Process Resource Manager.
2. Choose from the following options:
• Display Resource Usage
• List Resource Availability
If the system has the PRMSIMTools bundle installed, the available options are:
• Monitor PRM Groups
• Configure PRM Groups
• Display Resource Usage
• List Resource Availability
3. Go to: http://www.hp.com/go/prm for more information about PRM.
Managing SSH keys
The SSH Keys feature enables you to view and manage the public SSH keys, stored in the
known_hosts file, from the CMS. SSH keys enable the CMS and a managed system to authenticate
a secure connection.
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