Hp Matrix Operating Environment Software User Manual Page 6
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1 Overview
This chapter provides an overview of gWLM, including benefits, key concepts and terms, and the
gWLM management model.
gWLM Overview
gWLM allows you to centrally define resource-sharing policies that you can use across multiple HP
servers. Using these policies can increase system utilization and facilitate controlled sharing of
system resources. In addition, gWLM provides both real-time and historical monitoring of the
resource allocation.
gWLM consists of a Matrix OE Central Management Server, or CMS. You configure gWLM and
monitor your workloads from the system where the CMS software is installed. Also, you use agent
software on the systems where you have workloads you want gWLM to manage.
Benefits of using gWLM
The benefits of using gWLM include:
• Better use of existing server capacity
Typically, servers are set up with a single workload and ample reserve capacity to handle the
peak demand of that workload. gWLM allows you to combine multiple workloads with differing
demand patterns on a single server and make use of the idle capacity—when it is not needed
by your mission-critical workload.
• Confidence that mission-critical workloads get the required resources
Even with multiple workloads on a server, you can ensure your mission-critical workload gets
the resources it needs. gWLM automatically adjusts resource allocation, making it easy to
share resources when they are plentiful, and to dedicate resources to workloads during spikes
in resource demand.
• Reduced system administration costs
With gWLM, you can combine more workloads on fewer servers, thereby reducing
administration costs.
Comparison of PRM, WLM, and gWLM features
Process Resource Manager (PRM), Workload Manager (WLM), and gWLM all enable you to
control system resources. Use only one of these products at a time on a system.
For a detailed comparison of WLM and gWLM features, see the white paper Migrating from WLM
to gWLM available from http://www.hp.com/go/matrixoe/docs. As for comparing PRM and
gWLM features, gWLM provides most of the PRM functionality. However, gWLM does not provide
the following PRM features:
• Memory controls
• Disk I/O controls
• Simultaneous management of processor sets and fss groups within a single HP-UX image
• Noncapped mode
• Integration with HP-UX Security Containment
• Integration with netgroup user lists
• Integration with HP System Management Homepage (SMH)
6 Overview
- Abstract 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 1 Overview 6
- The gWLM management model 8
- The gWLM management model 9 9
- Available interfaces 10
- Assumptions 11
- Finding more gWLM information 11
- Policy types 13
- Choosing a policy type 13
- Getting started with gWLM 15
- Seeing gWLM in action 16
- Seeing gWLM in action 17 17
- Common uses for gWLM 18
- Common configuration tasks 18
- Quick Link Options 19
- Creating a new policy 20
- Editing a policy 20
- Common configuration tasks 21 21
- Stop managing a workload 22
- Stop managing an SRD 22
- Quick Link Option 23
- Monitoring workloads 24
- Message logs 25
- 4 Security 27
- 28 Security 28
- Setting gWLM properties 31
- Agent properties 33
- Communications ports 35
- Related events 37
- Manually clearing an SRD 38
- Nesting partitions 39
- Creating “Golden Images” 42
- Trying DNS 44
- Address: 15.11.100.17 44
- 6 Support and other resources 45
- HP authorized resellers 46
- Documentation feedback 46
- Related information 46
- Typographic conventions 46
- A Compatibility with agents 47
- Limitations 48
- # /opt/prm/bin/prmconfig -d 49
- # /opt/prm/bin/prmconfig -r 49
- # /opt/wlm/bin/wlmd -k 49
- Limitations 51 51
- Major issues 52
- Documentation or minor issues 53
- CMS is slow to respond 54
- # gwlmcmsd --stop 55
- # gwlmcmsd 55
- # gwlmagent --stop 58
- # gwlmagent 58
- 60 Index 60
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