Index | HP UX 11i Workload Management (gWLM/WLM) Software manual

Unable to build a single shared resource domain	58
Compatibility with PRM and WLM	58
Rare incompatibility with virtual partitions	59
Workloads in gWLM do not follow associated Serviceguard packages	59
Host name aliases are not supported	59
Making a configuration change to a large SRD is slow	59
Events for gWLM CPU migration can affect System Insight Manager CMS performance	59
Deleting workloads takes a long time	60
Integrity VM prevents discovery of psets and fss groups	60
Only workloads with managed siblings can be added to SRDs with nested partitions	60
Configurations with Psets nested in virtual partitions rejected with vPars versions earlier than vPars
A.03.05	60
Information error during shutdown	61
Managing fss groups on systems with psets restricts fss groups	61
Custom metrics lost on redeploy	61
Process placement using psrset is ignored	61
iCAP compliance warning	62
Major issues	62
gWLM fails to start with certain time zone settings	62
gWLM commands core dump	62
Multiple time changes on CMS might render gWLM unusable	62
PHKL_39587 patch required on HP-UX 11i v3 Integrity VM hosts	62
Full database transaction log	62
Documentation or minor issues	63
SRDs defined when system was non-iCAP are unable to use TiCAP later	63
Warning message displayed on non-partitionable machines	63
Remove old configuration data from the gWLM database	63
Cell-local processors and iCAP environment	64
CMS is slow to respond	64
Combining psets and virtual partitions	65
Error during discovery of compartments	65
Modifying Java while gWLM is running	65
Missing or unexpected historical data (system clocks differ)	66
Sample missing at start or end of gwlmreport output	66
Workload with fixed policy gets more resources than requested	66
Only one SRD is allowed to be deployed	66
SRD deployment times out and displays a blank screen	67
Application hangs in fss group	67
Scripts not placed in correct workloads	67
Processes moved to default pset or default fss group	67
Sizes/allocations less than policy minimums for Virtual Machines	67
Changes in sizes in Discovery	68
Starting management of monitored workloads with pset compartments	68
Unable to remove workload from nested partitions SRD	68
Discovery does not show current information for stopped virtual machines	68
Configuration of agent and CMS not synchronized	68
Missing historical data (gWLM CMS daemon/service restarted)	69
Missing workload application criteria after gWLM and HPSIM service restart	69
Negative current size for NONVM	69
Unmanaging a VM or vPar that is ON leaves SRD undeployed	70
Excluding a VM or vPar that is ON during the modification of the SRD leaves the SRD
undeployed	70
Index	71

Contents 5

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.