Resizing a workload’s npar, vpar, VSP, virtual machine, pset, or fss group as needed

To ensure a workload gets the CPU resources it needs—while also allowing resource sharing when possible—gWLM provides OwnBorrow policies.

With such a policy, you indicate the amount of CPU resources a workload should own. The workload is then allocated this owned amount of CPU resources—when it needs it. However, you can configure the workload to:

•Lend CPU resources to other workloads when it is idle

•Borrow CPU resources from workloads that are idle Associate an OwnBorrow policy with a workload:

•When creating an SRD, as described in “Getting started with gWLM” (page 17)

•When adding a workload to an SRD, as described in “Adding a new compartment or GiCAP group member to an SRD” (page 24)

•By changing the policy associated with an existing workload, as described in “Changing which policy is associated with a workload” (page 23)

gWLM’s utilization policies also allow resizing.

Common configuration tasks

This section discusses various configuration tasks:

•“Changing from advisory mode to managed mode” (page 22)

•“Creating a new policy” (page 22)

•“Editing a policy” (page 23)

•“Changing which policy is associated with a workload” (page 23)

•“Adding a new compartment or GiCAP group member to an SRD” (page 24)

•“Stop managing a workload” (page 24)

•“Stop managing an SRD” (page 25)

Setting up gWLM (initial setup steps)

Several of the configuration tasks require the same initial set-up steps. (Each task requiring these steps indicates that the steps are needed.) These steps are given below.

NOTE: You must be logged in as root on the systems where you run the gwlmagent command mentioned below.

1.Configure your CMS as indicated in the HP Matrix Operating Environment Software Installation and Update Guide, if you have not already done so.

2.On each managed node, start the gWLM agent (if it is not already running):

# /opt/gwlm/bin/gwlmagent

Alternatively, you can start the agents through System Insight Manager, as discussed in the HP Matrix Operating Environment Software Installation and Update Guide.

Common configuration tasks 21

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HP UX 11i Workload Management (gWLM/WLM) Software manual Common configuration tasks, Setting up gWLM initial setup steps
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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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