Combining the different policy types

Each workload in an SRD must have a policy. Starting with gWLM A.02.00.00.07, you can use any combination of the policy types within an SRD.

Seeing how gWLM will perform without affecting the system

gWLM provides an advisory mode that allows you to see how gWLM will approximately respond to a given SRD configuration—without putting gWLM in charge of your system’s resources. Using this mode, you can safely gain a better understanding of how gWLM works. In addition, you can check that your policies behave as expected—with minimal effect on the system.

Advisory mode is not available for SRDs containing virtual machines, psets, or fss groups due to the nature of these compartments.

Once you are comfortable with an SRD, change its mode to Managed to let gWLM manage resource allocation for the compartments in the SRD.

For information on changing modes, refer to “Changing from advisory mode to managed mode” (page 22).

Getting started with gWLM

gWLM is typically accessed through System Insight Manager. For information on the gWLM command-line interface, see gwlm(1M).

After performing the necessary gWLM daemon (or service) configuration as described in the HP Matrix Operating Environment Software Installation and Update Guide, the quickest way to start using gWLM to manage new systems is to use the Manage Systems and Workloads wizard, as described in the following text.

Before you start the wizard though, decide:

•Which systems you want to manage with gWLM

•Whether you want to manage your workloads by migrating CPU resources among nPars, vPars, VSPs, virtual machines, processor sets, or fss groups. (CPU resource migration among nPars with spare capacity is simulated using the HP Instant Capacity product, as explained in the section “The gWLM management model” (page 9).)

Tabs and menus

The controls shown in Figure 1 appear at the top of the Global Workload Manager screen.

Figure 1 Top controls of the Global Workload Manager screen

1The System Insight Manager menu bar

2 The HP Matrix OE visualization tabs

3 The HP Matrix OE visualization menu bar

These menu bars will be referenced later.

Using the wizard

To start the wizard:

Seeing how gWLM will perform without affecting the system 17

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HP UX 11i Workload Management (gWLM/WLM) Software manual Seeing how gWLM will perform without affecting the system
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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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