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 HP Enterprise Information Library. 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)

6Overview

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HP UX 11i Workload Management (gWLM/WLM) Software manual GWLM Overview, Benefits of using gWLM
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UX 11i Workload Management (gWLM/WLM) Software specifications

HP-UX 11i Workload Management (gWLM/WLM) software is an integral component of HP's premier UNIX operating system, designed to enhance system performance and resource management across diverse workloads. This advanced tool allows system administrators to monitor, control, and allocate resources effectively to achieve optimal performance, reliability, and service levels in enterprise environments.

One of the main features of gWLM/WLM is its ability to classify workloads and manage them according to specific policies set by the administrator. By using service level objectives (SLOs), administrators can define the performance criteria for various applications and workloads. gWLM continuously tracks these workloads, ensuring that they adhere to the defined SLOs, thus maintaining a high level of application performance.

The software employs resource pools, which segment resources such as CPU, memory, and I/O bandwidth among different workloads based on predefined priorities. This capability ensures that critical applications receive the resources they require, even during peak usage periods, thereby preventing resource starvation that could lead to system slowdowns or crashes.

Another significant characteristic of gWLM/WLM is its real-time monitoring and reporting capabilities. The software provides detailed insights into resource utilization, workload performance, and system health. Administrators can access this information through a user-friendly interface, allowing for informed decision-making and proactive management.

Integration with HP Serviceguard adds another layer of functionality, enabling high availability for critical applications. gWLM can orchestrate workload migration to ensure that service levels are maintained, even in the event of hardware failures or resource contention.

The technology behind gWLM/WLM is built on advanced algorithms that leverage historical data and predictive modeling to optimize resource allocation dynamically. This means that as workloads change, the system can automatically adjust resource distribution to meet performance targets without the need for constant manual intervention.

gWLM also supports integration with various enterprise management tools, enabling administrators to implement comprehensive monitoring and management strategies across the IT infrastructure. The scalability of gWLM allows organizations of all sizes to benefit from its robust workload management features, ensuring that they can adapt to changing demands in their operational environments.

In summary, HP-UX 11i Workload Management software offers a sophisticated solution for optimizing resource utilization, managing workloads effectively, and maintaining high performance in complex enterprise environments. Its comprehensive features and technologies make it an essential tool for any organization seeking to enhance their IT operations.
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