HP UX 11i Workload Management (gWLM/WLM) Software guide

Workaround

Remove the old configuration data from the gWLM database at regular intervals (such as monthly). Use the gwlm history command to trim the database based on date or age.

On HP-UX systems, enter the commands from /opt/gwlm/bin/. On Microsoft Windows systems, enter the commands from the default location at C:\Program Files\HP\Virtual Server Environment\bin\gwlm\.

•gwlm history --truncate=<CCYY/MM/DD>

For example, to remove data that was stored before January 25, 2012, enter: gwlm history --truncate=2012/01/25

•gwlm history –-purge=<days>

For example, to remove all data except for the last thirty days, enter: gwlm history --purge=30

2.Automatically remove the old configuration data from the gWLM database.

To remove data automatically, the following properties must be set in the gwlmcms.properties file :

com.hp.gwlm.cms.db.history.keep

Valid values:

0: Do not remove any historical data (default).

1- 10000 : The number of days for which history will be retained.

Any historical data older than the specified number of days will be removed from the database.

This Property controls the number of days for which the historical data for configuration and monitoring will be retained in the database. Data present beyond the specified number of days is automatically purged from the database on a daily basis.

NOTE: Before setting the value of this property to any value other than zero, ensure that you manually run the following command with specified conditions:

gwlm history --purge

This command must be executed at a time when the database is not heavily loaded. The value of com.hp.gwlm.cms.db.history.keep must be used as the parameter to gwlm history --purgecommand.

This ensures that the first run of the automatic purge does not affect database operations, even if data needs to be removed for a long period of time. Since the automatic purge is performed on a daily basis, purges after the initial one removes only a single day’s data. This reduces the load on the database.

Cell-local processors and iCAP environment

Using cell-local processors with virtual partitions inside an nPartition that uses (iCAP) leads to failure of the icod_modify command.

Workaround

Do not assign CPUs using cell specifications. Consider assigning CPUs to the virtual partitions using a hardware path.

Alternatively, to use cell-local processors, update to vPars A.04.04 on HP-UX 11i v2 (B.11.23) or to vPars A.05.01 on HP-UX 11i v3 (B.11.31).

CMS is slow to respond

The CMS is slow to respond.

Workaround

Time a gwlm list command on the CMS. If it takes more than 10 seconds, perform the following steps:

1.In the file /etc/opt/gwlm/conf/gwlmcms.properties (HP-UX) or install-path\VirtualServerEnvironment\conf\gwlmcms.properties

64 Global Workload Manager known issues

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.