[mysystem#2] > nslookup mysystem Trying DNS

Name: mysystem.mydomain.com

Address: 15.11.100.17

c.Verify that /etc/hosts has the same name configured for the address. Note that the first name should be the fully qualified domain name, and any aliases are listed afterward.

[mysystem#3] > grep 15.11.100.17 /etc/hosts

15.11.100.17 mysystem.mydomain.com mysystem

d.Verify that the reverse lookup of the IP address returns the same fully qualified domain name as configured in /etc/hosts.

[mysystem#4] > nslookup 15.11.100.17 Trying DNS

Name: mysystem.mydomain.com

Address: 15.11.100.17

Fix any issues by editing /etc/hosts or for additional information, see:

The HP-UX IP Address and Client Management Administrator's Guide, available online at http://www.hp.com/bizsupport.

The BIND 9 Administrator Reference Manual, available from the Internet Systems Consortium at http://www.isc.org/sw/bind/arm93.

The Windows documentation.

Unable to create new native thread

A message containing the following text might be displayed:

... unable to create new native thread

Workaround

This problem occurs because the following kernel parameters are set too low:

max_thread_proc

Set max_thread_proc to at least 256.

nkthread

Set nkthread to allow for your max_thread_proc value as well as the number of threads needed by all the other processes on the system.

Enabling or disabling dumping core for gWLM

This section contains information about enabling or disabling dumping core for gWLM controlled by GWLM_ENABLE_CORE_DUMP environment variable.

When you define GWLM_ENABLE_CORE_DUMP environment variable, gWLM dumps the core. But, gWLM default behavior is to not dump the core.

To generate core dump for gWLM:

1.Define the environment variable on managed node using the following command: export GWLM_ENABLE_CORE_DUMP=1

2.Run gwlmagent if gWLM agent is not running. The command used to run gWLM agent is gwlmagent

3.Send the SIGBUS signal to gwlmagent using the following command: kill –SIGBUS <gwlmagent pid>

50 Additional configuration and administration tasks

Page 50
Image 50
HP UX 11i Workload Management (gWLM/WLM) Software manual Unable to create new native thread

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.