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HP UX 11i Workload Management (gWLM/WLM) Software manual Deleting workloads takes a long time

Models: UX 11i Workload Management (gWLM/WLM) Software

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result in a high enough number of events that the performance of the System Insight Manager CMS is adversely affected.

Workaround

The following options are available as workarounds:

Option 1 For systems managed by gWLM that are running HP-UX 11i v3, install the patches PHCO_36126 and PHSS_36078. (These patches are included in the September 2007 Operating Environment Update Release.) A fix to EMS hardware monitors is available with the September 2007 Operating Environment Update Release. Even with these patches and fixes, there is still one event generated for each change in CPU count.

For systems managed by gWLM that are running HP-UX 11i v2, upgrade to the June 2007 Operating Environment Update Release.

Option 2 Upgrade to System Insight Manager C.05.01.00.01.xx on the CMS. This version of System Insight Manager does not, by default, subscribe to these events and will not have a performance degradation.

Option 3 If you want to subscribe to events, set up automatic event purging in System Insight Manager.

For more information about any of these workarounds, see the System Insight Manager documentation (available from http://www.hp.com/go/hpsim).

Deleting workloads takes a long time

Once a request to delete a workload is issued, it can take a long time (several minutes) to complete the deletion.

Workaround

Remove old historical monitoring and configuration data from the gWLM database by entering the following command:

#gwlm history --truncate --truncate=<CCYY/MM/DD>

If you prefer not to trim the database, you can delete multiple workloads simultaneously using the gwlm delete command.

For more information, see gwlm(1M).

Integrity VM prevents discovery of psets and fss groups

When the gWLM agent is installed on a system that has Integrity VM installed, discovery operations report only Integrity VM compartments even if psets and fss groups are present.

Workaround

To discover psets or fss groups on the system, you must remove Integrity VM.

Only workloads with managed siblings can be added to SRDs with nested partitions

Using the gWLM command-line interface, you cannot add a workload to an SRD that has nested partitions unless a sibling of that workload is already managed in that SRD.

Workaround

This is not an issue when you use the gWLM interface in System Insight Manager. Simply follow the instructions in Step 1 of the Manage Systems and Workloads wizard (reached by selecting Create→Shared Resource Domain), and select the set of hosts to include in a single SRD.

Configurations with Psets nested in virtual partitions rejected with vPars versions earlier than vPars A.03.05

gWLM does not support nesting psets in virtual partitions when the vPars version is earlier than vPars A.03.05. However, it has not always rejected such configurations. gWLM 4.0 and later does reject these configurations though. So, configurations you used with gWLM 2.x or gWLM 3.x can be rejected when you begin using gWLM 4.0 (and later) agents. Given such a

60 Global Workload Manager known issues

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HP UX 11i Workload Management (gWLM/WLM) Software manual Deleting workloads takes a long time
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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.